1.4.1.1. Introduction

Each C3S Monthly Summary Active Fire and FRP product (also termed an 'FRP product' for short, differentiating it from the 'Gas Flare' products) stores the latitude, longitude, MIR-radiance derived FRP, SWIR-radiance derived FRP, date, time and other associated data for every detected thermal channel detected hotspot pixel included in the Level 2 Active Fire Detection and FRP Products of that month, as detailed below. Each such hotspot pixel is classified based on its geographic location. Separate summaries of the data records coming from the different S3 satellites are put into a single text type file stored in CSV format, as are data from observations classed as daytime or night-time based on the hotspot pixel solar zenith angle (though local solar time for each hotspot is also provided in these C3S output files).

1.4.1.2. Data stored

Each C3S Level 2 Monthly Summary FRP product is stored as a space delimited ASCII text CSV file containing a monthly summary of the Level 2 Active Fire Detection and FRP Products data records collected globally over the month, and specifically information related to the location of every detected active fire (AF) hotspot pixel identified on land using the SLSTR thermal infrared channel tests. For each AF pixel present in the original Level 2 FRP product files collected over the month across the globe, the summary product stores the original SLSTR Level 1 granule pixel sample and line number, the corresponding latitude and longitude, the AF pixel FRP (MIR- and SWIR-derived where available), pixel footprint area, day/night flag, the SLSTR MIR channel used to retrieval FRP (S7 or F1) and date, time and satellite (e.g. Sentinel-3A or 3B etc). Further details of this information are provided in Table 1‑7. Separate C3S daytime and night-time files are produced, and separate files for each satellite.

Table 1‑7: Information held within each Level 2 Monthly Global Summary FRP Product File at the location of each detected active fire (AF) hotspot pixel.

10. Due to an error in the processing chain of the ESA SLSTR L2 FRP NTC products (currently under correction), sometimes fires that are temporarily categorised as ‘unclassified’ are not reclassified correctly, e.g. as vegetation fires, gas flares, etc. Therefore, the user should use the classification flag in the C3S AF & FRP L2 summary product derived from the ESA SLSTR L2 FRP NTC products with caution and also consider the unclassified fires. ↩

1.4.1.3. Temporal Resolution

One C3S Monthly Summary product is generated for every calendar month. 

1.4.1.4. File format and size

The Level 2 Monthly Global FRP Summary product is a space delimited ASCII text file with 20 columns, stored in CSV format. The definition of each column is shown in Table 1‑7. The file size for each file is about 100 MB.

1.4.1.5.  File naming convention

The C3S Level 2 Monthly Global FRP Summary Product files are named as follows: <Indicative_Date>-C3S-L2-FRP-<Indicative_sensor>-<TempRes>-<Indicative_satellite>-<day/nighttime>-fv<xx.x>.csv

<Indicative_Date>

The identifying date for this data set:

The format is YYYYMMDD, where YYYY is the four-digit year, MM is the two-digit month from 01 to 12 and DD is two digit day of the month, and as the product is provided in monthly files this is 01.

<Indicative_sensor>

In this version of the product, it is SLSTR.

< TempRes >

In this version of the product, it is P1M.

<Indicative_satellite>

The identifying sentinel-3 satellite, currently there are two operating sentinel-3 satellites: sentinel-3A and -3B. For sentinel-3A, its S3A, sentinel-3B, its S3B.

<daytime>

Day or night-time product

fv<File_Version>

File version number in the form n{1,}[.n{1,}] (That is 1 or more digits followed by optional . and another 1 or more digits). This version is fv1.2.

Example: 20210101-C3S-L2-FRP-SLSTR-P1M-S3A-nighttime-fv1.2.csv

1.4.1.6. Metadata

There are no metadata for the Level 2 Monthly Summary Products.

1.4.2.1. Temporal Resolution

The Level 3a Daily Gridded Active Fire and FRP Product provides a daily statistical gridded summary of information contained in the Level 2 Active Fire and FRP Products. The hotspot pixel information is that from active fire pixels detected with the SLSTR thermal infrared channels and stored in the original Level 2 product files. The hotspot pixels used are thus the same used to populate the Level 2 Active Fire and FRP Monthly Global Summary Products, but the temporal resolution of the Level 3a Daily Gridded Active Fire and FRP Product is daily rather than monthly.

1.4.2.2. Spatial Resolution

The Level 3a Daily Gridded FRP Product file stores daily data on a global 0.1 degree resolution grid, the grid cell is approximately 10 km by 10 km at the equator and its area decreases with latitude away from the equator.

1.4.2.3. Projection

A geographic coordinate system based on the World Geodetic System 84 (WGS84) reference ellipsoid is used, with coordinates specified in decimal degrees. Information on product projection, ellipsoid and pixel size is included in the NetCDF file, so the area covered by every grid cell can be geographically referenced without the need of additional specific pixel indicators of geographical position.

1.4.2.4. Product Layers

Each Level 3a Daily Gridded FRP Product file and each Level 3a Daily Gridded Gas Flare Product file is a tiled, multi-layer NetCDF file covering the globe at a 0.1 degree grid cell resolution and storing information extracted globally from one day of Level 2 Active Fire Detection and FRP Products.

In the Level 3a Daily Gridded FRP Product file only data in grid cells containing land are provided, in order to make the Level 3a product most relevant to vegetation and organic soil burning. Separate files store data from daytime and night-time observations, and separate files for different S3 satellites. In each file, a grid-cell location stores eight values:

1. Number of active fire pixels detected in each land grid cell (grid-cells considered to containing only water are given zero AF detections, since any fires would likely be due to gas flares e.g. offshore, rather than landscape fires), reported as 'fire_pixels' in the NetCDF product.
2. Mean FRP of the detected land-based AF pixels: reported as 'frp' in the NetCDF product.
3. The uncertainty of the mean FRP of the detected land-based AF pixels, reported as 'frp_unc' in the NetCDF product.
4. Total number of pixel observations made within the grid cell, reported as 'total_pixels' in the NetCDF product.
5. Total number of pixels in the grid cell whose surface conditions might impact AF detection (e.g. which contain too great an area of surface water), reported as 'surface_conditions_flag_pixels' in the NetCDF product.
6. Total number of pixels on land identified as containing atmospheric phenomena that might interfere with AF detection (e.g. thick cloud cover), reported as 'atmospheric_conditions_flag_pixels' in the NetCDF product.
7. The mean “cloud fraction” of the land pixels in a 1.1° ´1° grid cell, reported as 'atmospheric_conditions_fraction' in the NetCDF product.
8. Total active fire pixel count adjusted for atmospheric conditions that impede AF detection (e.g. thick cloud cover), reported as 'fire_weighted_pixels' in the NetCDF product.

The latter adjusted active fire pixel count is based on the assumption that active fires burn with the same frequency under cloud as they do under cloud free conditions, so e.g. if land in a grid cell was 30% covered by cloud during the period then the number of active fire pixels adjusted for cloud cover is simply the detected number of active fire pixels increased by 30%. It is considered that the cloud cover adjustment may work better at coarser spatial resolutions than the AF detections are made at, so cloud cover fraction has been calculated at 1.1 degree grid cell resolution, centred on each 0.1° grid cell.

In terms of frequency of coverage of each grid cell, when combined the SLSTR instruments on the two concurrently orbiting Sentinel-3 satellites provide data of any equatorial Earth location once by day and once by night, every 24 hours. Therefore, every 24 hours, each individual satellites SLSTR provides data in around half of the equatorial grid cells. However, this frequency of coverage increases at higher latitudes to orbital convergence, providing grid cells sufficiently close to the poles more observations every 24 hours than those at the equator. Whilst a constantly maintained Sentinel-3 orbit means that the frequency of coverage pattern of any particular grid cell should simply be repeated over time, users may sometimes wish to take into account the differing number of observations made at certain grid cells. The Level 3a Daily Gridded FRP Product data record ‘Total number of pixel observations made within the grid cell’ can be used for this. This parameter varies with latitude because 0.1° × 0.1° grid cells at higher latitudes are covered by a different number of SLSTR 1 km pixels compared to those at the equator. Additionally, grid cells at higher latitudes are observed more frequently by SLSTR than those at lower latitudes.

As an example, for the Level 3a Daily Gridded FRP Product file, the S3A data layer ‘fire_pixel’  stores the number of pixel observations that were made within each the grid cell during daytime passes. Some values will be zero for the daily gridded product, indicating that no observations of that grid cell were made in the period being considered. Values higher than zero indicate the number of pixel observations that fell within the grid cell, which depends on both the latitudinally-dependent km² area of the grid cell and the number of times SLSTR viewed that grid cell in the period. Some grid cells that lay at the edge of the SLSTR near nadir swath may only be partly observed during an overpass, and this will also be reflected in their recorded number of pixel observations.

Figure 1‑3 shows a C3S Daily Gridded Product (daytime) opened in the Panoply Data Viewer (https://www.giss.nasa.gov/tools/panoply/) with most of the layers shown. 

Figure 1‑3: An example of the layer structure of a C3S Level 3a Daily Gridded FRP (Daytime) Product for 01 August 2024, as opened in Panoply Data Viewer (https://www.giss.nasa.gov/tools/panoply/).

Figure 1‑4 shows from the Level 3a Daily Gridded FRP Daytime Product of 1^st March 2023 the gridded global daytime AF count (fire_pixels) and total FRP, the latter calculated by multiplying together the AF count (fire_pixels) and mean FRP (frp) data layers. Fires are particularly active in parts of South America, Northern Africa and Central Eastern Asia. 

Figure 1‑4: Daily global map of (a) AF count and (b) total FRP extracted from from the Level 3a Daily Gridded FRP (Daytime) Product of 1^st  March 2023. Data are from Sentinel-3B in this case.

1.4.2.5. File format and size

The Level 3a Daily Gridded FRP Product files are stored in a compressed Network Common Data Form version 4 (NetCDF4) file, with metadata attributes compliant with version 1.7 of the Climate and Forecast conventions. In each file, each grid cell has eight values stored, as detailed above. The file size of each Level 3a Daily Gridded Product NetCDF4 file is around 5MB. 

1.4.2.6. File naming convention

The Level 3a Daily Gridded Active Fire and FRP Product files are named as follows (with TempRes as P1D to differentiate them from other Level 3 Gridded Active Fire and FRP product files (i.e. the 27-day and monthly versions)):

<Indicative_Date>-C3S-L3-FRP-<Indicative_sensor>-<TempRes>-<SpatRes>-<Indicative_satellite>-<day/nighttime>-fv<xx.x>.nc

 <Indicative_Date>

The identifying date for this data set:

The format is YYYYMMDD, where YYYY is the four-digit year, MM is the two-digit month from 01 to 12 and DD is the two-digit day of the month.

<Indicative_sensor>

In this version of the product, it is SLSTR.

<TempRes>

In this version of the product, it is P1D.

<SpatRes>

In this version of the product, it is 0.1deg.

<Indicative_satellite>

The identifying sentinel-3 satellite, currently there are two operating sentinel-3 satellites: sentinel-3A and -3B. For sentinel-3A, its S3A, sentinel-3B, its S3B.

<day/nighttime>

Day or night-time product

fv<File_Version>

File version number in the form n{1,}[.n{1,}] (That is 1 or more digits followed by optional . and another 1 or more digits). This version is fv1.2.

Example: 20221030-C3S-L3-FRP-SLSTR-P1D-0.1deg-S3A-nighttime-fv1.2.nc

1.4.2.7. Metadata

The metadata for the gridded data are provided as global attributes in the NetCDF file. This follows the CCI guidelines [Bennett, 2012].

1.4.3.1. Temporal Resolution

The Level 3a 27-Day Gridded Active Fire and FRP products build on the Level 3a Daily Gridded Active Fire and FRP product files by collating and summarising the same Level 2 product information - but now over a 27-day period. This time interval is selected to match the standard Sentinel-3 orbital repeat cycle, which results in the SLSTR near nadir-view viewing angles for any point on the Earth surface being essentially repeated every 27 days.

1.4.3.2. Spatial Resolution

The Level 3a 27-Day Gridded Active Fire and FRP products store information on a global 0.1 degree resolution grid.

1.4.3.3. Projection

A geographic coordinate system based on the World Geodetic System 84 (WGS84) reference ellipsoid is used, with coordinates specified in decimal degrees. Information on product projection, ellipsoid and pixel size is included in the NetCDF file, so the area covered by every grid cell can be geographically referenced without the need of adding specific pixel indicators of geographical position.

1.4.3.4. Product Layers

The 27-Day product stores the same same eight layers of information as the Level 3a Daily Gridded FRP product, but now each are calculated over a 27-Day period.

As with the daily product, for the 27-Day product the ‘Total number of pixel observations made within the grid cell’ can be used to understand the differing number of observations made at different grid cells, which changes with latitude due to both 0.1° ´ 0.1° grid cells at higher latitudes being covered by a different number of SLSTR 1 km pixels than at the equator, and also by the fact that grid cells at higher latitudes are observed more often by SLSTR compared to those at lower latitudes.

Figure 1‑5 shows a Level 3a 27-Day Gridded FRP Product (Night-time) opened in the Panoply Data Viewer (https://www.giss.nasa.gov/tools/panoply/), with most of the layers shown. The 27-Day product layer structure is similar to the daily product . 

Figure 1‑5: An example of the layer structure of Level 3a 27-Day Gridded FRP Product (Night-time), starting date of the data is 15 August 2024.

1.4.3.5. File format and size

Same as the daily product, the Level 3a 27-Day product stores information in a compressed Network Common Data Form version 4 (NetCDF4) file, with metadata attributes compliant with version 1.7 of the Climate and Forecast conventions. In each layer, each grid cell has eight values stored, as detailed in Section 1.3.3.4. The file size is around 10 MB.

1.4.3.6. File naming convention

The Level 3a 27-Day Gridded Active Fire and FRP product files are named as follows (with TempRes as P27D to differentiate them from other Level 3 Active Fire and FRP product types):

<Indicative_Date>-C3S-L3-FRP-<Indicative_sensor>-<TempRes>-<SpatRes>-<Indicative_satellite>-<day/nighttime>-fv<xx.x>.nc

 <Indicative_Date>

The identifying date for this data set:

The format is YYYYMMDD, where YYYY is the four-digit year, MM is the two-digit month from 01 to 12 and DD is the two digit day of the month the product starts accumulating data at.

<Indicative_sensor>

In this version of the product, it is SLSTR.

<TempRes>

In this version of the product, it is P27D.

<SpatRes>

In this version of the product, it is 0.1deg.

<Indicative_satellite>

The identifying sentinel-3 satellite, currently there are two operating sentinel-3 satellites: sentinel-3A and -3B. For sentinel-3A, its S3A, sentinel-3B, its S3B.

<day/nighttime>

Day or night-time product

fv<File_Version>

File version number in the form n{1,}[.n{1,}] (That is 1 or more digits followed by optional . and another 1 or more digits). This version is fv1.2.

Example: 20220721-C3S-L3-FRP-SLSTR-P27D-0.1deg-S3A-daytime-fv1.2.nc

1.4.3.7. Metadata

The metadata for the FRP maps are provided as global attributes in the NetCDF file. It follows the CCI guidelines [Bennett, 2012].

1.4.4.1. Temporal Resolution

These Level 3 Monthly Active Fire and FRP products are similar to the daily and 27-day product types, collating and summarising the same information from the Level 2 product files but now compiled over one calendar month.

1.4.4.2. Spatial Resolution

The Level 3 Monthly Active Fire and FRP products provide global data at a grid cell size of 0.25 degrees. This is spatially coarser than the daily and 27-day product types and designed to match that of the MODIS Climate Modelling Grid (CMG) active fire products.

1.4.4.3. Projection

A geographic coordinate system based on the World Geodetic System 84 (WGS84) reference ellipsoid is used, with coordinates specified in decimal degrees. Information on product projection, ellipsoid and pixel size is included in the NetCDF file, so the area covered by every grid cell can be geographically referenced without the need of adding specific pixel indicators of geographical position.

1.4.4.4. Product Layers

The Monthly product stores the same same eight layers of information as the Daily and 27-Day Gridded Products, but now each are calculated over a calendar month.

As with these other products, the ‘Total number of pixel observations made within the grid cell’ can be used to understand the differing number of observations made at different grid cells, which changes with latitude due to both 0.25° ´ 0.25° grid cells at higher latitudes being covered by a different number of SLSTR 1 km pixels than at the equator, and also by the fact that grid cells at higher latitudes are observed more often by SLSTR compared to those at lower latitudes. 

Figure 1‑6 shows from the Level 3 Monthly Summary AF and FRP Product (Daytime) of March 2023 the gridded global daytime AF count from S3A and the total FRP, the latter calculated by multiplying together the AF count and mean FRP data layers.

Figure 1‑6: Monthly global map of (a) AF count and (b) total FRP derived from the Level 3 Monthly Summary AF and FRP Product (Daytime) of March 2023. Data are from Sentinel-3A in this case. Compare to the daily maps of Figure 1‑3 produced using data from 1^st March 2023 to see the difference accumulation of data over a one-month period makes.

1.4.4.5. File format and size

The Level 3 Monthly Summary AF and FRP Products stores data in a compressed Network Common Data Form version 4 (NetCDF4) file, with metadata attributes compliant with version 1.7 of the Climate and Forecast conventions. In each layer each grid cell has eight values stored, as detailed in Section 1.3.4.4. The file size is around 3 MB.

1.4.4.6. File naming convention

The Level 3 Monthly Summary AF & FRP Daytime Product files are named as follows (with TempRes as P1M to differentiate them from the other Level 3 Gridded product files):

<Indicative_Date>-C3S-L3-FRP-<Indicative_sensor>-<TempRes>-<SpatRes>>-<Indicative_satellite>-<day/nighttime>-fv<xx.x>.nc

<Indicative_Date>

The identifying date for this data set:

The format is YYYYMMDD, where YYYY is the four-digit year, MM is the two-digit month from 01 to 12 and DD, as the product is provided in monthly files, is 01.

<Indicative_sensor>

In this version of the product, it is SLSTR.

<TempRes>

In this version of the product, it is P1M.

<SpatRes>

In this version of the product, it is 0.25deg.

<Indicative_satellite>

The identifying sentinel-3 satellite, currently there are two operating sentinel-3 satellites: sentinel-3A and -3B. For sentinel-3A, its S3A, sentinel-3B, its S3B.

<day/nighttime>

Day or night-time product

fv<File_Version>

File version number in the form n{1,}[.n{1,}] (That is 1 or more digits followed by optional . and another 1 or more digits). This version is fv1.2.

Example: 20230301-C3S-L3-FRP-SLSTR-P1M-0.25deg-S3A-nighttime-fv1.2.nc

1.4.4.7.  Metadata

The metadata for the FRP maps are provided as global attributes in the NetCDF file. They follows the CCI guidelines [Bennett, 2012].

1.4.5.1. Introduction

The night-time 500m SWIR band based Sentinel-3 Level 2 Active Fire Detection and FRP Products issued in non-time critical (NTC) mode are the source for the C3S gas flare products, including the Level 2 Monthly Global gas flare Location and gas flare Summary Product discussed here. Each night-time C3S Level 2 Monthly Global Gas Flare Location and FRP Summary Product is a comma delimited ASCII text CSV file containing the information shown in Table 1‑8 that is relevant to the gas flare pixels detected that month. Each Level 2 Summary Product is based on information from the shortwave-infrared derived data layer contained in tens of thousands of Level 2 Active Fire Detection and FRP Product files.

Each Level 2 Gas Flare Summary product stores essential information about pixels believed to contain active gas flares, along with a SUMMARY FLAG dataset providing information on every pixel in the 3-minute Universal time granule related primarily to the output of the active fire detection tests. The Level 2 Monthly Global Gas Flare Location and FRP Summary Product provides a text-based summary of the Level 2 Active Fire Detection and FRP Product data collected over the period of one month at the locations of all detected active fire pixels across the globe.

The Monthly Global Gas Flare Night-time Summary product stores the latitude, longitude, FRP, date, time and associated data of every SWIR-detected hotspot pixel confirmed to have been likely to be due to a gas flare via a series of spectral and temporal tests and present in the Level 2 Gas Flare Detection and FRP Products of that month, as detailed in Section 1.4.5.2. The separate summaries of the data records coming from the S3A and S3B satellites are put also into separate text type files stored in CSV format.

1.4.5.2.  Date usage information

The original Sentinel-3 Level 2 Active Fire Detection and FRP Product files contain a shortwave infrared derived data layer that includes all detected hotspot types having a significant night-time SWIR emission signal, but these are filtered by the C3S algorithm to only leave in the S3S Gas Flare products information related to gas flare hotspots.

The FRP of gas flares is best derived from SWIR rather than MIR observations, and so information related to the gas flare pixel detections and their SWIR-derived FRP stored in each L2 Summary Product includes (i) the original SLSTR Level 1 granule pixel sample and line number, (ii) the corresponding latitude and longitude, (iii) the gas flare pixel SWIR-derived FRP and uncertainty, (iv) pixel footprint area of the SWIR channel used (S6) for FRP derivation, day/night flag, and (v) date, time and satellite (e.g., Sentinel-3A or 3B). Further details of this information are provided in Table 1‑8.

Table 1‑8: Information held within each Level 2 Monthly Global Gas Flare Night-time Summary Product File at the location of each detected gas flare (GF) pixel for each Sentinel-3 satellite.

1.4.5.3. Temporal Resolution

The monthly summary product is generated every calendar month, at present the product only includes night-time gas flares over land and ocean.

1.4.5.4. File format and size

The Level 2 Monthly Global Gas Flare Night-time Summary Product is a space delimited ASCII text file with 15 columns, stored in CSV format. The definition of each column is shown in Table 1‑8. The file size for each file is about 3 MB.

1.4.5.5. File naming convention

The C3S Level 2 Monthly Global Gas Flare Summary Product files are named as follows: <Indicative_Date>-C3S-L2-FRP-<Indicative_sensor>-<TempRes>-<Indicative_satellite>-<gasflares>-fv<xx.x>.csv

<Indicative_Date>

The identifying date for this data set:

The format is YYYYMMDD, where YYYY is the four-digit year, MM is the two-digit month from 01 to 12 and DD is the two digit day of the month.  As the product is provided in monthly files this is always 01.

<Indicative_sensor>

In this version of the product, it is SLSTR.

< TempRes >

In this version of the product, it is P1M.

<Indicative_satellite>

The identifying sentinel-3 satellite, currently there are two operating sentinel-3 satellites: sentinel-3A and -3B. For sentinel-3A, its S3A, sentinel-3B, its S3B.

<day/nighttime>

Day, night-time or gas flare product

fv<File_Version>

File version number in the form n{1,}[.n{1,}] (That is 1 or more digits followed by optional . and another 1 or more digits). This version is fv1.2.

Example: 20220701-C3S-L2-FRP-SLSTR-P1M-S3A-gasflares-fv1.2.csv

1.4.5.6. Metadata

There is no metadata for Level-2 monthly summary gas flare product.

1.4.6.1. Temporal Resolution

The Level 3a Daily Gridded Gas Flare Night-time Product is generated on a daily basis.

1.4.6.2. Spatial Resolution

The Level 3a Daily Gridded Gas Flare Night-time Product file stores daily data on a global 0.1° resolution grid, the grid cell is approximately 10 km by 10 km at the equator and its area decreases with latitude away from the equator.

1.4.6.3. Projection

The Level 3a Daily Gridded Gas Flare Night-time Product file stores data on a global 0.1° resolution grid. A geographic coordinate system based on the World Geodetic System 84 (WGS84) reference ellipsoid is used, with coordinates specified in decimal degrees. Information on product projection, ellipsoid and pixel size is included in the NetCDF file, so the area covered by every grid cell can be geographically referenced without the need of additional specific pixel indicators of geographical position.

1.4.6.4. Product Layer

Each Level 3a Daily Gridded Gas Flare Night-time Product file is a tiled NetCDF file covering the globe at a 0.1° grid cell resolution. The AF & FRP data from different satellite are put in different files, one for Sentinel-3A, and one for Sentinel-3B. Each file stores information contained in one day of Level 2 Sentinel-3 AF detection and FRP Product files. Data in grid cells containing land or water are provided, since gas flares can be present in both environments. In each product a grid-cell location stores six values relevant to SLSTR night-time observations classed as gas flares:

1. Total number of shortwave-infrared detected hotspots identified as gas flare pixels, reported as 'fire_pixels' in the NectCDF product. 
2. Mean FRP (derived from SWIR channel observations) of all detected gas flare pixels, reported as 'frp' in the NectCDF product. 
3. Uncertainty on this SWIR-derived mean FRP, reported as 'frp_unc' in the NectCDF product. 
4. Total number of detected gas flare pixels when the cell was fully observed cloud-free, reported as 'fire_pixels_cloudfree' in the NectCDF product. 
5. Mean SWIR-derived FRP derived from the flare pixels detected when the cell was fully observed cloud-free, reported as 'frp_cloudfree' in the NectCDF product. 
6. Uncertainty on this SWIR-derived mean FRP, reported as 'frp_unc_cloudfree' in the NectCDF product.

The grid cells will have typically six data layers, representing information derived from the night-time (ascending node) Sentinel-3 A or B overpasses. Figure 1‑7 shows a Level 3a Daily Gridded Gas Flare Night-time Product as opened in the Panoply Data Viewer (https://www.giss.nasa.gov/tools/panoply/) with all of the layers shown.

Figure 1‑7: An example of the layer structure of the C3S Level 3a Daily Gridded Gas Flare Night-time Product for 01 Oct. 2024 derived from Sentinel-3A, as opened in Panoply Data Viewer (https://www.giss.nasa.gov/tools/panoply/).

Figure 1‑8 shows the Level 3a Daily Gridded Gas Flare Night-time S3A Product of 15 September 2024; (a) the gridded global night-time Gas Flare count (fire_pixels) and (b) total FRP, the latter calculated by multiplying together the Gas Flare count (fire_pixels) and mean FRP (frp) data layers. Gas Flare Fires are particularly active in Arabian Peninsula during this period.

Figure 1‑8: Daily global map of (a) AF count and (b) total FRP derived from the Level 3a Daily Gridded AF & FRP Gas Flare Night-time S3A Product of 15 September 2024. Data are from Sentinel-3A in this case.

1.4.6.5.  File format and size

The Level 3a Daily Gridded Gas Flare Night-time Product file is stored in a compressed Network Common Data Form version 4 (NetCDF4) file, with metadata attributes compliant with version 1.7 of the Climate and Forecast conventions. AF data coming from observations made by the different Sentinel-3 satellites (Sentinel-3A and -3B currently) have separate layers in the NetCDF file, and ultimately there will be two Sentinel-3A and two Sentinel-3B layers – representing data from the daytime and nighttime overpasses of each satellite (currently a full daytime Level 2 FRP NTC product does not exist with which to create the Level 3 day-time data layers). In each layer of the gridded Level 3a product, each grid cell has six values stored, as detailed in Section 1.3.6.4. The file size of each Level 3a daily gridded Night-time product NetCDF4 file is around 0.4 MB.

1.4.6.6.  File naming convention

The Level 3a Daily Gridded Gas Flare Night-time Product files are named as follows (with TempRes as P1D to differentiate them from other Level 3 Gridded Gas Flare Night-time Product files):

<Indicative_Date>-C3S-L3-FRP-<Indicative_sensor>-<TempRes>-<SpatRes>-<Indicative_satellite>-<gasflares>-fv<xx.x>.nc

<Indicative_Date>

The identifying date for this data set:

The format is YYYYMMDD, where YYYY is the four-digit year, MM is the two-digit month from 01 to 12 and DD is the two-digit day of the month.

<Indicative_sensor>

In this version of the product, it is SLSTR.

<TempRes>

In this version of the product, it is P1D.

<SpatRes>

In this version of the product, it is 0.1deg.

<Indicative_satellite>

The identifying sentinel-3 satellite, currently there are two operating sentinel-3 satellites: sentinel-3A and -3B. For sentinel-3A, its S3A, sentinel-3B, its S3B.

<day/nighttime>

Day, night-time or gas flare product

fv<File_Version>

File version number in the form n{1,}[.n{1,}] (That is 1 or more digits followed by optional . and another 1 or more digits). This version is fv1.2.

Example: 20230804-C3S-L3-FRP-SLSTR-P1D-0.1deg-S3A-gasflares-fv1.2.nc

1.4.6.7. Metadata

The metadata for the Night-time AF & FRP maps are provided as global attributes in the NetCDF file. It follows the CCI guidelines (Bennett, 2012).

1.4.7.1. Temporal Resolution

The Level 3a 27-Day Gridded Gas Flare Night-time Product builds on the Level 3a daily product by collating and summarising the information contained therein at the same 0.1° grid cell resolution, but now over a 27-day period. This time interval is selected to match the standard Sentinel-3 orbital repeat cycle.

1.4.7.2. Spatial Resolution

The Level 3a 27-Day Gridded Gas Flare Night-time Product builds on the Level 3a daily product and stores information on a global 0.1° resolution grid.

1.4.7.3. Projection

The Level 3a 27-Day Gridded Gas Flare Night-time Product file builds on the Level 2 Active Fire Detection and FRP Products files and is stored on the global 0.1° resolution grid similar to the Level 3a Daily Gridded Gas Flare Product. A geographic coordinate system based on the World Geodetic System 84 (WGS84) reference ellipsoid is used, with coordinates specified in decimal degrees. Information on product projection, ellipsoid and pixel size is included in the NetCDF file, so the area covered by every grid cell can be geographically referenced without the need of adding specific pixel indicators of geographical position.

1.4.7.4. Product Layer

The 27-Day product stores the same same six layers of information as the Level 3a Daily Gridded Gas Flare Night-time Product, but now each are calculated over a 27-Day period. Also as with the Level 3a Daily Gridded Gas Flare Product, data from S3A and S3B are stored in separate files, which are now calculated over the 27-day period.

Figure 1‑9 shows a Level 3a 27-Day Gridded Gas Flare Night-time Product opened in the Panoply Data Viewer (https://www.giss.nasa.gov/tools/panoply/), with all of the layers shown. The layer structure is similar to the daily Night-time product.

Figure 1‑9: An example of the layer structure of the C3S Level 3a 27-Day Gridded Gas Flare Night-time Product starting date of the data is 08 Oct. 2024, as opened in Panoply Data Viewer (https://www.giss.nasa.gov/tools/panoply/).

1.4.7.5. File format and size

In the same way as the Level 3a Daily Gridded Gas Flare Night-time Product, the Level 3a 27-Day Gridded Gas Flare Night-time Product stores information in a compressed Network Common Data Form version 4 (NetCDF4) file, with metadata attributes compliant with version 1.7 of the Climate and Forecast conventions. In each layer, each grid cell has six values stored, as detailed in Section 1.4.7.4. The file size is around 0.4 MB.

1.4.7.6. File naming convention

The Level 3a 27-Day Gridded Gas Flare Night-time Product  files are named as follows (with TempRes as P27D to differentiate them from other Level 3 Gridded Gas Flare Night-time Product files ):

<Indicative_Date>-C3S-L3-FRP-<Indicative_sensor>-<TempRes>-<SpatRes>-<Indicative_satellite>-<gasflares>-fv<xx.x>.nc

<Indicative_Date>

The identifying date for this data set:

The format is YYYYMMDD, where YYYY is the four-digit year, MM is the two-digit month from 01 to 12 and DD is the two digit day of the month at which the product starts accumulating data.

<Indicative_sensor>

In this version of the product, it is SLSTR.

<TempRes>

In this version of the product, it is P27D.

<SpatRes>

In this version of the product, it is 0.1deg.

<Indicative_satellite>

The identifying sentinel-3 satellite, currently there are two operating sentinel-3 satellites: sentinel-3A and -3B. For sentinel-3A, its S3A, sentinel-3B, its S3B.

<day/nighttime>

Day, night-time or gas flare product

fv<File_Version>

File version number in the form n{1,}[.n{1,}] (That is 1 or more digits followed by optional . and another 1 or more digits). This version is fv1.2.

Example: 20230803-C3S-L3-FRP-SLSTR-P27D-0.1deg-S3A-gasflares-fv1.2.nc

1.4.7.7. Metadata

The metadata for the Night-time Gas Flare maps are provided as global attributes in the NetCDF file. It follows the CCI guidelines (Bennett, 2012).

1.4.8.1. Temporal Resolution

The Level 3 Monthly Summary Gas Flare Night-time Product builds on the prior Level 3a Gridded Gas Flare Products by collating and summarising the information relevant to gas flares, but now that related to a calendar month.

1.4.8.2. Spatial Resolution

The Level 3 Monthly Summary Gas Flare Night-time Product provides global data at a grid cell size of 0.25°, matching that of the MODIS Climate Modelling Grid (CMG) active fire products.

1.4.8.3. Projection

The Level 3 Monthly Summary Gas Flare Night-time Product stores data on a global 0.25° resolution grid. A geographic coordinate system based on the World Geodetic System 84 (WGS84) reference ellipsoid is used, with coordinates specified in decimal degrees. Information on product projection, ellipsoid and pixel size is included in the NetCDF file, so the area covered by every grid cell can be geographically referenced without the need of adding specific pixel indicators of geographical position.

1.4.8.4.  Product Layer

The Level 3 Monthly Summary Gas Flare Night-time Product stores the same same six layers of information as the Level 3a Daily Gridded Gas Flare Night-time Product, but now each are calculated over a calendar month period. Also as with the Level 3a Daily Gridded Gas Flare Product, data from S3A and S3B are stored in separate files, which are now calculated over the period of one month.

Figure 1‑10 shows a Level 3 Monthly Summary Gas Flare Night-time Product opened in the Panoply Data Viewer (https://www.giss.nasa.gov/tools/panoply/), with all the layers shown. The layer structure is similar to the daily and 27-Day Night-time product.

Figure 1‑10: An example of the layer structure of the C3S Level 3 Monthly Summary Gridded Gas Flare Night-time Product of January 2024, as opened in Panoply Data Viewer (https://www.giss.nasa.gov/tools/panoply/).

Figure 1‑11 shows from the Level 3 Monthly Gridded Gas Flare Night-time S3B Product of January 2024 (a) the gridded global night-time Gas Flare count from S3B and (b) the total FRP, the latter calculated by multiplying together the AF count and mean FRP data layers.

Figure 1‑11: Monthly global map of (a) Gas Flare pixel count and (b) total FRP derived from the Level 3 Monthly Summary Gas Flare Night-time S3B Product of January 2024.

1.4.8.5. File format and size

In the same way as for the Level 3a 27-Day Gridded Gas Flare Night-time Products, the Level 3 Monthly Summary Gas Flare Night-time Product stores data in a compressed Network Common Data Form version 4 (NetCDF4) file, with metadata attributes compliant with version 1.7 of the Climate and Forecast conventions. In each layer each grid cell has six values stored, as detailed in Section 1.3.6.4 The file size is around 0.15 MB.

1.4.8.6. File naming convention

The Level 3 Monthly Summary Gas Flare Night-time Product  files are named as follows (with TempRes as P1M to differentiate them from other Level 3 Gridded Gas Flare Night-time Product files ):

<Indicative_Date>-C3S-L3-FRP-<Indicative_sensor>-<TempRes>-<SpatRes>>-<Indicative_satellite>-<gasflares>-fv<xx.x>.nc

<Indicative_Date>

The identifying date for this data set:

The format is YYYYMMDD, where YYYY is the four-digit year, MM is the two-digit month from 01 to 12 and DD, as the product is provided in monthly files, is always 01.

<Indicative_sensor>

In this version of the product, it is SLSTR.

<TempRes>

In this version of the product, it is P1M.

<SpatRes>

In this version of the product, it is 0.25deg.

<Indicative_satellite>

The identifying sentinel-3 satellite, currently there are two operating sentinel-3 satellites: sentinel-3A and -3B. For sentinel-3A, its S3A, sentinel-3B, its S3B.

<day/nighttime>

Day, night-time or gasflare product

fv<File_Version>

File version number in the form n{1,}[.n{1,}] (That is 1 or more digits followed by optional . and another 1 or more digits). This version is fv1.2.

Example: 20230801-C3S-L3-FRP-SLSTR-P1M-0.25deg-S3A-gasflares-fv1.2.nc

1.4.8.7. Metadata

The metadata for the Night-time Gas Flare maps are provided as global attributes in the NetCDF file. It follows the CCI guidelines (Bennett, 2012).

netcdf file: 20220301-C3S-L3-FRP-SLSTR-P1D-0.1deg-S3B-daytime-fv1.2.nc { 

dimensions:   

lon = 3600;   

lat = 1800;   

time = 1;   

bounds = 2; 

variables:

float lon(lon=3600);     

:units = "degrees_east";     

:standard_name = "longitude";     

:long_name = "longitude";     

:bounds = "lon_bounds";    

float lat(lat=1800);     

:units = "degrees_north";     

:standard_name = "latitude";     

:long_name = "latitude";     

:bounds = "lat_bounds";    

double time(time=1);     

:units = "days since 1970-01-01 00:00:00";     

:standard_name = "time";     

:long_name = "time";     

:bounds = "time_bounds";     

:calendar = "standard";    

float lon_bounds(lon=3600, bounds=2);

float lat_bounds(lat=1800, bounds=2);    

double time_bounds(time=1, bounds=2);    

uint fire_pixels(time=1, lat=1800, lon=3600);     

:_FillValue = 4294967295U; // uint     

:units = "1";     

:long_name = "Total number of S3B daytime active fire pixels";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

float frp(time=1, lat=1800, lon=3600);     

:_FillValue = NaNf; // float      :units = "MW";     

:long_name = "Mean Fire Radiative Power measured by S3B during daytime";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

float frp_unc(time=1, lat=1800, lon=3600);     

:_FillValue = NaNf; // float      :units = "MW";     

:long_name = "Mean Fire Radiative Power uncertainty measured by S3B during daytime";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

uint total_pixels(time=1, lat=1800, lon=3600);     

:_FillValue = 4294967295U; // uint     

:units = "1";     

:long_name = "Total number of S3B daytime pixels";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

uint surface_conditions_flag_pixels(time=1, lat=1800, lon=3600);     

:_FillValue = 4294967295U; // uint     

:units = "1";     

:long_name = "Total number of S3B daytime pixels unprocessed by the AF detection algorithm due to them being considered unsuitable surfaces, e.g. permanent water";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

uint atmospheric_condition_flag_pixels(time=1, lat=1800, lon=3600);     

:_FillValue = 4294967295U; // uint     

:units = "1";     

:long_name = "Total number of S3B daytime pixels unprocessed by the AF detection algorithm due to them being considered to have unsuitable atmospheric conditions for FRP product processing, e.g. certain types of cloud";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

float atmospheric_condition_fraction(time=1, lat=1800, lon=3600);     

:_FillValue = NaNf; // float     

:units = "1";     

:long_name = "Mean unsuitable atmospheric condition fraction of S3B daytime land pixels in a macro pixel of 1.1 degrees";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

float fire_weighted_pixels(time=1, lat=1800, lon=3600);     

:_FillValue = NaNf; // float     

:units = "1";     

:long_name = "Number of S3B daytime active fire pixels weighted by atmospheric condition fraction";     

:_ChunkSizes = 1U, 18U, 3600U; // uint  

// global attributes: 

:title = "ECMWF C3S Gridded SLSTR Fire Radiative Power product"; 

:institution = "King\'s College London, Brockmann Consult GmbH"; 

:source = "ESA Sentinel-3 A+B SLSTR FRP"; 

:history = "Created on 20221215T195040Z"; 

:references = "See https://climate.copernicus.eu/"; 

:tracking_id = "53ce7356-c75e-4bf0-8d94-77d0dd818b26"; 

:Conventions = "CF-1.7"; 

:summary = "The Copernicus Climate Change Service issues three Level 3 Fire Radiative Power (FRP) Products, each generated from Level 2 Sentinel-3 Active Fire Detection and FRP Products issued in NTC mode, which themselves are based on Sentinel 3 SLSTR data. The global Level 3 Daily FRP Products synthesise global data from the Level 2 AF Detection and FRP Product granules at 0.1 degree spatial and at 1-day temporal resolution, and also provide some adjustments for unsuitable atmospheric condition since e.g clouds can mask actively burning fires from view. These products are primarily designed for ease of use of the key information coming from individual granule-based Level 2 Products, for example in global modelling, trend analysis and model evaluation. Each product is available in separate files per platform (S3A, S3B, ...) and per nighttime and daytime observations."; 

:keywords = "Fire Radiative Power, Climate Change, ESA, C3S, GCOS"; 

:id = "20220301-C3S-L3-FRP-SLSTR-P1D-0.1deg-S3B-daytime-fv1.2.nc"; 

:naming_authority = "org.esa-cci"; 

:keywords_vocabulary = "NASA Global Change Master Directory (GCMD) Science keywords"; 

:cdm_data_type = "Grid"; 

:comment = "These data were produced as part of the Copernicus Climate Change Service programme."; 

:date_created = "20221215T195040Z"; 

:creator_name = "Brockmann Consult GmbH"; 

:creator_url = "https://www.brockmann-consult.de"; 

:creator_email = "info@brockmann-consult.de"; 

:contact = "http://copernicus-support.ecmwf.int";

:project = "EC C3S Fire Radiative Power"; 

:geospatial_lat_min = "-90"; 

:geospatial_lat_max = "90"; 

:geospatial_lon_min = "-180"; 

:geospatial_lon_max = "180"; 

:geospatial_vertical_min = "0"; 

:geospatial_vertical_max = "0"; 

:time_coverage_start = "20220301T000000Z"; 

:time_coverage_end = "20220301T000000Z"; 

:time_coverage_duration = "P1D"; 

:time_coverage_resolution = "P1D"; 

:standard_name_vocabulary = "NetCDF Climate and Forecast (CF) Metadata Convention"; 

:license = "EC C3S FRP Data Policy"; 

:platform = "S3B"; 

:night_or_day = "day"; 

:sensor = "SLSTR"; 

:spatial_resolution = "0.1 degrees"; 

:geospatial_lon_units = "degrees_east";

:geospatial_lat_units = "degrees_north"; 

:geospatial_lon_resolution = "0.1"; 

:geospatial_lat_resolution = "0.1";

}

netcdf file:20220624-C3S-L3-FRP-SLSTR-P27D-0.1deg-S3B-daytime-fv1.2.nc { 

dimensions:   

lon = 3600;   

lat = 1800;   

time = 1;   

bounds = 2; 

variables:   

float lon(lon=3600);     

:units = "degrees_east";     

:standard_name = "longitude";     

:long_name = "longitude";     

:bounds = "lon_bounds";    

float lat(lat=1800);     

:units = "degrees_north";     

:standard_name = "latitude";     

:long_name = "latitude";     

:bounds = "lat_bounds";    

double time(time=1);     

:units = "days since 1970-01-01 00:00:00";     

:standard_name = "time";     

:long_name = "time";     

:bounds = "time_bounds";     

:calendar = "standard";    

float lon_bounds(lon=3600, bounds=2);    

float lat_bounds(lat=1800, bounds=2);    

double time_bounds(time=1, bounds=2);    

uint fire_pixels(time=1, lat=1800, lon=3600);     

:_FillValue = 4294967295U; // uint     

:units = "1";     

:long_name = "Total number of S3B daytime active fire pixels";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

float frp(time=1, lat=1800, lon=3600);     

:_FillValue = NaNf; // float     

:units = "MW";     

:long_name = "Mean Fire Radiative Power measured by S3B during daytime";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

float frp_unc(time=1, lat=1800, lon=3600);     

:_FillValue = NaNf; // float     

:units = "MW";     

:long_name = "Mean Fire Radiative Power uncertainty measured by S3B during daytime";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

uint total_pixels(time=1, lat=1800, lon=3600);     

:_FillValue = 4294967295U; // uint     

:units = "1";     

:long_name = "Total number of S3B daytime pixels";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

uint surface_conditions_flag_pixels(time=1, lat=1800, lon=3600);     

:_FillValue = 4294967295U; // uint     

:units = "1";     

:long_name = "Total number of S3B daytime pixels unprocessed by the AF detection algorithm due to them being considered unsuitable surfaces, e.g. permanent water";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

uint atmospheric_condition_flag_pixels(time=1, lat=1800, lon=3600);     

:_FillValue = 4294967295U; // uint     

:units = "1";     

:long_name = "Total number of S3B daytime pixels unprocessed by the AF detection algorithm due to them being considered to have unsuitable atmospheric conditions for FRP product processing, e.g. certain types of cloud";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

float atmospheric_condition_fraction(time=1, lat=1800, lon=3600);     

:_FillValue = NaNf; // float     

:units = "1";     

:long_name = "Mean unsuitable atmospheric condition fraction of S3B daytime land pixels in a macro pixel of 1.1 degrees";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

float fire_weighted_pixels(time=1, lat=1800, lon=3600);     

:_FillValue = NaNf; // float     

:units = "1";     

:long_name = "Number of S3B daytime active fire pixels weighted by atmospheric condition fraction";     

:_ChunkSizes = 1U, 18U, 3600U; // uint  

// global attributes: 

:title = "ECMWF C3S Gridded SLSTR Fire Radiative Power product";  :institution = "King\'s College London, Brockmann Consult GmbH"; 

:source = "ESA Sentinel-3 A+B SLSTR FRP";  :history = "Created on 20221216T022306Z"; 

:references = "See https://climate.copernicus.eu/"; 

:tracking_id = "888e9a48-cfc7-40ce-8f56-6ae6d469d8ac"; 

:Conventions = "CF-1.7"; 

:summary = "The Copernicus Climate Change Service issues three Level 3 Fire Radiative Power (FRP) Products, each generated from Level 2 Sentinel-3 Active Fire Detection and FRP Products issued in NTC mode, which themselves are based on Sentinel 3 SLSTR data. The global Level 3 27-Day FRP Products synthesise global data from the Level 2 AF Detection and FRP Product granules at 0.1 degree spatial and at 27-day temporal resolution, and also provide some adjustments for unsuitable atmospheric condition since e.g clouds can mask actively burning fires from view. These products are primarily designed for ease of use of the key information coming from individual granule-based Level 2 Products, for example in global modelling, trend analysis and model evaluation. Each product is available in separate files per platform (S3A, S3B, ...) and per nighttime and daytime observations."; 

:keywords = "Fire Radiative Power, Climate Change, ESA, C3S, GCOS"; 

:id = "20220624-C3S-L3-FRP-SLSTR-P27D-0.1deg-S3B-daytime-fv1.2.nc"; 

:naming_authority = "org.esa-cci"; 

:keywords_vocabulary = "NASA Global Change Master Directory (GCMD) Science keywords"; 

:cdm_data_type = "Grid"; 

:comment = "These data were produced as part of the Copernicus Climate Change Service programme."; 

:date_created = "20221216T022306Z";  :creator_name = "Brockmann Consult GmbH"; 

:creator_url = "https://www.brockmann-consult.de";  :creator_email = "info@brockmann-consult.de"; 

:contact = "http://copernicus-support.ecmwf.int"; 

:project = "EC C3S Fire Radiative Power"; 

:geospatial_lat_min = "-90";  :geospatial_lat_max = "90"; 

:geospatial_lon_min = "-180";  :geospatial_lon_max = "180"; 

:geospatial_vertical_min = "0"; 

:geospatial_vertical_max = "0";  :time_coverage_start = "20220624T000000Z"; 

:time_coverage_end = "20220720T000000Z"; 

:time_coverage_duration = "P27D"; 

:time_coverage_resolution = "P27D"; 

:standard_name_vocabulary = "NetCDF Climate and Forecast (CF) Metadata Convention"; 

:license = "EC C3S FRP Data Policy"; 

:platform = "S3B"; 

:night_or_day = "day"; 

:sensor = "SLSTR"; 

:spatial_resolution = "0.1 degrees"; 

:geospatial_lon_units = "degrees_east"; 

:geospatial_lat_units = "degrees_north"; 

:geospatial_lon_resolution = "0.1"; 

:geospatial_lat_resolution = "0.1";

}

netcdf file:20220701-C3S-L3-FRP-SLSTR-P1M-0.25deg-S3A-daytime-fv1.2.nc { 

dimensions:   

lon = 1440;   

lat = 720;   

time = 1;   

bounds = 2; 

variables:   

float lon(lon=1440);     

:units = "degrees_east";     

:standard_name = "longitude";     

:long_name = "longitude";     

:bounds = "lon_bounds";

float lat(lat=720);     

:units = "degrees_north";     

:standard_name = "latitude";     

:long_name = "latitude";     

:bounds = "lat_bounds";    

double time(time=1);     

:units = "days since 1970-01-01 00:00:00";     

:standard_name = "time";     

:long_name = "time";     

:bounds = "time_bounds";     

:calendar = "standard";    

float lon_bounds(lon=1440, bounds=2); 

float lat_bounds(lat=720, bounds=2);

double time_bounds(time=1, bounds=2);    

uint fire_pixels(time=1, lat=720, lon=1440);     

:_FillValue = 4294967295U; // uint     

:units = "1";     

:long_name = "Total number of S3A daytime active fire pixels";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

float frp(time=1, lat=720, lon=1440);     

:_FillValue = NaNf; // float      :units = "MW";     

:long_name = "Mean Fire Radiative Power measured by S3A during daytime";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

float frp_unc(time=1, lat=720, lon=1440);     

:_FillValue = NaNf; // float     

:units = "MW";     

:long_name = "Mean Fire Radiative Power uncertainty measured by S3A during daytime";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

uint total_pixels(time=1, lat=720, lon=1440);     

:_FillValue = 4294967295U; // uint      :units = "1";     

:long_name = "Total number of S3A daytime pixels";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

uint surface_conditions_flag_pixels(time=1, lat=720, lon=1440);     

:_FillValue = 4294967295U; // uint     

:units = "1";     

:long_name = "Total number of S3A daytime pixels unprocessed by the AF detection algorithm due to them being considered unsuitable surfaces, e.g. permanent water";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

uint atmospheric_condition_flag_pixels(time=1, lat=720, lon=1440);     

:_FillValue = 4294967295U; // uint     

:units = "1";     

:long_name = "Total number of S3A daytime pixels unprocessed by the AF detection algorithm due to them being considered to have unsuitable atmospheric conditions for FRP product processing, e.g. certain types of cloud";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

float atmospheric_condition_fraction(time=1, lat=720, lon=1440);     

:_FillValue = NaNf; // float     

:units = "1";     

:long_name = "Mean unsuitable atmospheric condition fraction of S3A daytime land pixels in a macro pixel of 1.25 degrees";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

float fire_weighted_pixels(time=1, lat=720, lon=1440);     

:_FillValue = NaNf; // float     

:units = "1";     

:long_name = "Number of S3A daytime active fire pixels weighted by atmospheric condition fraction";     

:_ChunkSizes = 1U, 45U, 1440U; // uint  

// global attributes: 

:title = "ECMWF C3S Gridded SLSTR Fire Radiative Power product"; 

:institution = "King\'s College London, Brockmann Consult GmbH"; 

:source = "ESA Sentinel-3 A+B SLSTR FRP"; 

:history = "Created on 20230614T175255Z"; 

:references = "See https://climate.copernicus.eu/"; 

:tracking_id = "441834b2-ed61-4caa-8653-6428635958e5"; 

:Conventions = "CF-1.7"; 

:summary = "The Copernicus Climate Change Service issues three Level 3 Fire Radiative Power (FRP) Products, each generated from Level 2 Sentinel-3 Active Fire Detection and FRP Products issued in NTC mode, which themselves are based on Sentinel 3 SLSTR data. The global Level 3 Monthly Summary FRP Products synthesise global data from the Level 2 AF Detection and FRP Product granules at 0.25 degree spatial and at 1 month temporal resolution, and also provide some adjustments for unsuitable atmospheric condition since e.g clouds can mask actively burning fires from view. These products are primarily designed for ease of use of the key information coming from individual granule-based Level 2 Products, for example in global modelling, trend analysis and model evaluation. Each product is available in separate files per platform (S3A, S3B, ...) and per nighttime and daytime observations."; 

:keywords = "Fire Radiative Power, Climate Change, ESA, C3S, GCOS"; 

:id = "20220701-C3S-L3-FRP-SLSTR-P1M-0.25deg-S3A-daytime-fv1.2.nc"; 

:naming_authority = "ogres-cci"; 

:keywords_vocabulary = "NASA Global Change Master Directory (GCMD) Science keywords"; 

:cdm_data_type = "Grid";  :comment = "These data were produced as part of the Copernicus Climate Change Service programme."; 

:date_created = "20230614T175255Z";  :creator_name = "Brockmann Consult GmbH"; 

:creator_url = "https://www.brockmann-consult.de"; 

:creator_email = "info@brockmann-consult.de"; 

:contact = "http://copernicus-support.ecmwf.int"; 

:project = "EC C3S Fire Radiative Power"; 

:geospatial_lat_min = "-90"; 

:geospatial_lat_max = "90"; 

:geospatial_lon_min = "-180"; 

:geospatial_lon_max = "180"; 

:geospatial_vertical_min = "0";  :geospatial_vertical_max = "0"; 

:time_coverage_start = "20220701T000000Z"; 

:time_coverage_end = "20220731T000000Z"; 

:time_coverage_duration = "P1M"; 

:time_coverage_resolution = "P1M"; 

:standard_name_vocabulary = "NetCDF Climate and Forecast (CF) Metadata Convention"; 

:license = "EC C3S FRP Data Policy"; 

:platform = "S3A";  :night_or_day = "day"; 

:sensor = "SLSTR"; 

:spatial_resolution = "0.25 degrees"; 

:geospatial_lon_units = "degrees_east"; 

:geospatial_lat_units = "degrees_north"; 

:geospatial_lon_resolution = "0.25"; 

:geospatial_lat_resolution = "0.25";

}

netcdf file: 20220701-C3S-L3-FRP-SLSTR-P1D-0.1deg-S3A-nighttime-fv1.2.nc {

dimensions:

lon = 3600;

lat = 1800;

time = 1;

bounds = 2;

variables:

float lon(lon=3600);

:units = "degrees_east";

:standard_name = "longitude";

:long_name = "longitude";

:bounds = "lon_bounds";

float lat(lat=1800);

:units = "degrees_north";

:standard_name = "latitude";

:long_name = "latitude";

:bounds = "lat_bounds";

double time(time=1);

 :units = "days since 1970-01-01 00:00:00";

 :standard_name = "time";

:long_name = "time";

:bounds = "time_bounds";

:calendar = "standard";

float lon_bounds(lon=3600, bounds=2);

float lat_bounds(lat=1800, bounds=2);

double time_bounds(time=1, bounds=2);

uint fire_pixels(time=1, lat=1800, lon=3600);

:_FillValue = 4294967295U; // uint

:units = "1";

 :long_name = "Total number of S3A nighttime active fire pixels";

:_ChunkSizes = 1U, 18U, 3600U; // uint

float frp(time=1, lat=1800, lon=3600);

 :_FillValue = NaNf; // float

:units = "MW";

:long_name = "Mean Fire Radiative Power measured by S3A during nighttime";

:_ChunkSizes = 1U, 18U, 3600U; // uint

float frp_unc(time=1, lat=1800, lon=3600);

 :_FillValue = NaNf; // float

:units = "MW";

:long_name = "Mean Fire Radiative Power uncertainty measured by S3A during nighttime";

:_ChunkSizes = 1U, 18U, 3600U; // uint

uint total_pixels(time=1, lat=1800, lon=3600);

:_FillValue = 4294967295U; // uint

:units = "1";

:long_name = "Total number of S3A nighttime pixels";

:_ChunkSizes = 1U, 18U, 3600U; // uint

uint surface_conditions_flag_pixels(time=1, lat=1800, lon=3600);

 :_FillValue = 4294967295U; // uint

:units = "1";

 :long_name = "Total number of S3A nighttime pixels unprocessed by the AF detection algorithm due to them being considered unsuitable surfaces, e.g. permanent water";

 :_ChunkSizes = 1U, 18U, 3600U; // uint

uint atmospheric_condition_flag_pixels(time=1, lat=1800, lon=3600);

:_FillValue = 4294967295U; // uint

:units = "1";

:long_name = "Total number of S3A nighttime pixels unprocessed by the AF detection algorithm due to them being considered to have unsuitable atmospheric conditions for FRP product processing, e.g. certain types of cloud";

 :_ChunkSizes = 1U, 18U, 3600U; // uint

float atmospheric_condition_fraction(time=1, lat=1800, lon=3600);

:_FillValue = NaNf; // float

:units = "1";

:long_name = "Mean unsuitable atmospheric condition fraction of S3A nighttime land pixels in a macro pixel of 1.1 degrees";

:_ChunkSizes = 1U, 18U, 3600U; // uint

float fire_weighted_pixels(time=1, lat=1800, lon=3600);

:_FillValue = NaNf; // float

:units = "1";

:long_name = "Number of S3A nighttime active fire pixels weighted by atmospheric condition fraction";

:_ChunkSizes = 1U, 18U, 3600U; // uint

  // global attributes:

:title = "ECMWF C3S Gridded SLSTR Fire Radiative Power product";

:institution = "King\'s College London, Brockmann Consult GmbH";

:source = "ESA Sentinel-3 A+B SLSTR FRP";

:history = "Created on 20221216T000849Z";

:references = "See https://climate.copernicus.eu/";

:tracking_id = "300ab1a5-8502-48f5-92e0-88319b2a411a";

:Conventions = "CF-1.7";

:summary = "The Copernicus Climate Change Service issues three Level 3 Fire Radiative Power (FRP) Products, each generated from Level 2 Sentinel-3 Active Fire Detection and FRP Products issued in NTC mode, which themselves are based on Sentinel 3 SLSTR data. The global Level 3 Daily FRP Products synthesise global data from the Level 2 AF Detection and FRP Product granules at 0.1 degree spatial and at 1-day temporal resolution, and also provide some adjustments for unsuitable atmospheric condition since e.g clouds can mask actively burning fires from view. These products are primarily designed for ease of use of the key information coming from individual granule-based Level 2 Products, for example in global modelling, trend analysis and model evaluation. Each product is available in separate files per platform (S3A, S3B, ...) and per nighttime and daytime observations.";

:keywords = "Fire Radiative Power, Climate Change, ESA, C3S, GCOS";

:id = "20220701-C3S-L3-FRP-SLSTR-P1D-0.1deg-S3A-nighttime-fv1.2.nc";

:naming_authority = "org.esa-cci";

:keywords_vocabulary = "NASA Global Change Master Directory (GCMD) Science keywords";

:cdm_data_type = "Grid";

:comment = "These data were produced as part of the Copernicus Climate Change Service programme.";

:date_created = "20221216T000849Z";

:creator_name = "Brockmann Consult GmbH";

:creator_url = "https://www.brockmann-consult.de";

:creator_email = "info@brockmann-consult.de";

:contact = "http://copernicus-support.ecmwf.int";

:project = "EC C3S Fire Radiative Power";

:geospatial_lat_min = "-90";

:geospatial_lat_max = "90";

:geospatial_lon_min = "-180";

:geospatial_lon_max = "180";

:geospatial_vertical_min = "0";

:geospatial_vertical_max = "0";

:time_coverage_start = "20220701T000000Z";

:time_coverage_end = "20220701T000000Z";

:time_coverage_duration = "P1D";

:time_coverage_resolution = "P1D";

:standard_name_vocabulary = "NetCDF Climate and Forecast (CF) Metadata Convention";

:license = "EC C3S FRP Data Policy";

:platform = "S3A";

:night_or_day = "night";

:sensor = "SLSTR";

:spatial_resolution = "0.1 degrees";

:geospatial_lon_units = "degrees_east";

:geospatial_lat_units = "degrees_north";

:geospatial_lon_resolution = "0.1";

:geospatial_lat_resolution = "0.1";

}

netcdf file: 20220624-C3S-L3-FRP-SLSTR-P27D-0.1deg-S3A-nighttime-fv1.2.nc {

dimensions:   

lon = 3600;   

lat = 1800;   

time = 1;   

bounds = 2; 

variables:   

float lon(lon=3600);

:units = "degrees_east";     

:standard_name = "longitude";     

:long_name = "longitude";     

:bounds = "lon_bounds";    

float lat(lat=1800);     

:units = "degrees_north";     

:standard_name = "latitude";     

:long_name = "latitude";     

:bounds = "lat_bounds";    

double time(time=1);     

:units = "days since 1970-01-01 00:00:00";     

:standard_name = "time";     

:long_name = "time";     

:bounds = "time_bounds";     

:calendar = "standard";    

float lon_bounds(lon=3600, bounds=2);    

float lat_bounds(lat=1800, bounds=2);    

double time_bounds(time=1, bounds=2);    

uint fire_pixels(time=1, lat=1800, lon=3600);     

:_FillValue = 4294967295U; // uint     

:units = "1";     

:long_name = "Total number of S3A nighttime active fire pixels";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

float frp(time=1, lat=1800, lon=3600);     

:_FillValue = NaNf; // float     

:units = "MW";     

:long_name = "Mean Fire Radiative Power measured by S3A during nighttime";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

float frp_unc(time=1, lat=1800, lon=3600);     

:_FillValue = NaNf; // float     

:units = "MW";     

:long_name = "Mean Fire Radiative Power uncertainty measured by S3A during  nighttime";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

uint total_pixels(time=1, lat=1800, lon=3600);     

:_FillValue = 4294967295U; // uint      :units = "1";     

:long_name = "Total number of S3A nighttime pixels";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

uint surface_conditions_flag_pixels(time=1, lat=1800, lon=3600);     

:_FillValue = 4294967295U; // uint     

:units = "1";     

:long_name = "Total number of S3A nighttime pixels unprocessed by the AF detection algorithm due to them being considered unsuitable surfaces, e.g.permanent water";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

uint atmospheric_condition_flag_pixels(time=1, lat=1800, lon=3600);     

:_FillValue = 4294967295U; // uint      :units = "1";     

:long_name = "Total number of S3A nighttime pixels unprocessed by the detection algorithm due to them being considered to have  atmospheric conditions for FRP product processing, e.g. certain types cloud";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

float atmospheric_condition_fraction(time=1, lat=1800, lon=3600);     

:_FillValue = NaNf; // float     

:units = "1";     

:long_name = "Mean unsuitable atmospheric condition fraction of S3A nighttime land pixels in a macro pixel of 1.1 degrees";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

float fire_weighted_pixels(time=1, lat=1800, lon=3600);     

:_FillValue = NaNf; // float     

:units = "1";     

:long_name = "Number of S3A nighttime active fire pixels weighted by atmospheric condition fraction";     

:_ChunkSizes = 1U, 18U, 3600U; // uint  

// global attributes: 

:title = "ECMWF C3S Gridded SLSTR Fire Radiative Power product"; 

:institution = "King\'s College London, Brockmann Consult GmbH"; 

:source = "ESA Sentinel-3 A+B SLSTR FRP"; 

:history = "Created on 20221216T022306Z"; 

:references = "See https://climate.copernicus.eu/"; 

:tracking_id = "b43e9d78-e5ac-426a-97db-22ae4dd2be4f"; 

:Conventions = "CF-1.7"; 

:summary = "The Copernicus Climate Change Service issues three Level 3 Fire Radiative Power (FRP) Products, each generated from Level 2 Sentinel-3 Active Fire Detection and FRP Products issued in NTC mode, which themselves are based on Sentinel 3 SLSTR data. The global Level 3 27-Day FRP Products synthesise global data from the Level 2 AF Detection and FRP Product granules at 0.1 degree spatial and at 27-day temporal resolution, and also provide some adjustments for unsuitable atmospheric condition since e.g clouds can mask actively burning fires from view. These products are primarily designed for ease of use of the key information coming from individual granule-based Level 2 Products, for example in global modelling, trend analysis and model evaluation. Each product is available in separate files per platform (S3A, S3B, ...) and per nighttime and daytime observations."; 

:keywords = "Fire Radiative Power, Climate Change, ESA, C3S, GCOS"; 

:id = "20220624-C3S-L3-FRP-SLSTR-P27D-0.1deg-S3A-nighttime-fv1.2.nc"; 

:naming_authority = "org.esa-cci"; 

:keywords_vocabulary = "NASA Global Change Master Directory (GCMD) Science keywords"; 

:cdm_data_type = "Grid"; 

:comment = "These data were produced as part of the Copernicus Climate Change 
       Service programme.";  :date_created = "20221216T022306Z";  :creator_name = "Brockmann Consult GmbH"; 

:creator_url = "https://www.brockmann-consult.de"; 

:creator_email = "info@brockmann-consult.de"; 

:contact = "http://copernicus-support.ecmwf.int"; 

:project = "EC C3S Fire Radiative Power"; 

:geospatial_lat_min = "-90"; 

:geospatial_lat_max = "90"; 

:geospatial_lon_min = "-180"; 

:geospatial_lon_max = "180"; 

:geospatial_vertical_min = "0"; 

:geospatial_vertical_max = "0"; 

:time_coverage_start = "20220624T000000Z"; 

:time_coverage_end = "20220720T000000Z"; 

:time_coverage_duration = "P27D"; 

:time_coverage_resolution = "P27D"; 

:standard_name_vocabulary = "NetCDF Climate and Forecast (CF) Metadata Convention"; 

:license = "EC C3S FRP Data Policy"; 

:platform = "S3A";  :night_or_day = "night"; 

:sensor = "SLSTR"; 

:spatial_resolution = "0.1 degrees"; 

:geospatial_lon_units = "degrees_east"; 

:geospatial_lat_units = "degrees_north"; 

:geospatial_lon_resolution = "0.1"; 

:geospatial_lat_resolution = "0.1";

}

netcdf file: 20220701-C3S-L3-FRP-SLSTR-P1M-0.25deg-S3A-nighttime-fv1.2.nc { 

dimensions:   

lon = 1440;   

lat = 720;   

time = 1;   

bounds = 2; 

variables:   

float lon(lon=1440);     

:units = "degrees_east";     

:standard_name = "longitude";     

:long_name = "longitude";     

:bounds = "lon_bounds";    

float lat(lat=720);     

:units = "degrees_north";     

:standard_name = "latitude";     

:long_name = "latitude";     

:bounds = "lat_bounds";    

double time(time=1);     

:units = "days since 1970-01-01 00:00:00";     

:standard_name = "time";     

:long_name = "time";     

:bounds = "time_bounds";     

:calendar = "standard";    

float lon_bounds(lon=1440, bounds=2);    

float lat_bounds(lat=720, bounds=2);    

double time_bounds(time=1, bounds=2);    

uint fire_pixels(time=1, lat=720, lon=1440);     

:_FillValue = 4294967295U; // uint     

:units = "1";     

:long_name = "Total number of S3A nighttime active fire pixels";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

float frp(time=1, lat=720, lon=1440);     

:_FillValue = NaNf; // float     

:units = "MW";     

:long_name = "Mean Fire Radiative Power measured by S3A during nighttime";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

float frp_unc(time=1, lat=720, lon=1440);     

:_FillValue = NaNf; // float      :units = "MW";     

:long_name = "Mean Fire Radiative Power uncertainty measured by S3A during nighttime";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

uint total_pixels(time=1, lat=720, lon=1440);     

:_FillValue = 4294967295U; // uint     

:units = "1";      :long_name = "Total number of S3A nighttime pixels";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

uint surface_conditions_flag_pixels(time=1, lat=720, lon=1440);     

:_FillValue = 4294967295U; // uint     

:units = "1";     

:long_name = "Total number of S3A nighttime pixels unprocessed by the AF detection algorithm due to them being considered unsuitable surfaces, e.g. permanent water";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

uint atmospheric_condition_flag_pixels(time=1, lat=720, lon=1440);     

:_FillValue = 4294967295U; // uint     

:units = "1";     

:long_name = "Total number of S3A nighttime pixels unprocessed by the detection algorithm due to them being considered to have unsuitable atmospheric conditions for FRP product processing, e.g. certain types of cloud";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

float atmospheric_condition_fraction(time=1, lat=720, lon=1440);     

:_FillValue = NaNf; // float     

:units = "1";     

:long_name = "Mean unsuitable atmospheric condition fraction of S3A nighttime land pixels in a macro pixel of 1.25 degrees";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

float fire_weighted_pixels(time=1, lat=720, lon=1440);     

:_FillValue = NaNf; // float      :units = "1";     

:long_name = "Number of S3A nighttime active fire pixels weighted by atmospheric condition fraction";     

:_ChunkSizes = 1U, 45U, 1440U; // uint  

// global attributes: 

:title = "ECMWF C3S Gridded SLSTR Fire Radiative Power product"; 

:institution = "King\'s College London, Brockmann Consult GmbH"; 

:source = "ESA Sentinel-3 A+B SLSTR FRP"; 

:history = "Created on 20230614T175255Z"; 

:references = "See https://climate.copernicus.eu/"; 

:tracking_id = "65a33220-c29d-4358-9379-a8290cf9c778"; 

:Conventions = "CF-1.7"; 

:summary = "The Copernicus Climate Change Service issues three Level 3 Fire Radiative Power (FRP) Products, each generated from Level 2 Sentinel-3 Active Fire Detection and FRP Products issued in NTC mode, which themselves are based on Sentinel 3 SLSTR data. The global Level 3 Monthly Summary FRP Products synthesise global data from the Level 2 AF Detection and FRP Product granules at 0.25 degree spatial and at 1 month temporal resolution, and also provide some adjustments for unsuitable atmospheric condition since e.g clouds can mask actively burning fires from view. These products are primarily designed for ease of use of the key information coming from individual granule-based Level 2 Products, for example in global modelling, trend analysis and model evaluation. Each product is available in separate files per platform (S3A, S3B, ...) and per nighttime and daytime observations."; 

:keywords = "Fire Radiative Power, Climate Change, ESA, C3S, GCOS"; 

:id = "20220701-C3S-L3-FRP-SLSTR-P1M-0.25deg-S3A-nighttime-fv1.2.nc"; 

:naming_authority = "org.esa-cci"; 

:keywords_vocabulary = "NASA Global Change Master Directory (GCMD) Science keywords"; 

:cdm_data_type = "Grid";  :comment = "These data were produced as part of the Copernicus Climate Change Service programme.";  :date_created = "20230614T175255Z"; 

:creator_name = "Brockmann Consult GmbH"; 

:creator_url = "https://www.brockmann-consult.de"; 

:creator_email = "info@brockmann-consult.de"; 

:contact = "http://copernicus-support.ecmwf.int"; 

:project = "EC C3S Fire Radiative Power"; 

:geospatial_lat_min = "-90"; 

:geospatial_lat_max = "90"; 

:geospatial_lon_min = "-180"; 

:geospatial_lon_max = "180"; 

:geospatial_vertical_min = "0"; 

:geospatial_vertical_max = "0"; 

:time_coverage_start = "20220701T000000Z"; 

:time_coverage_end = "20220731T000000Z"; 

:time_coverage_duration = "P1M"; 

:time_coverage_resolution = "P1M"; 

:standard_name_vocabulary = "NetCDF Climate and Forecast (CF) Metadata Convention"; 

:license = "EC C3S FRP Data Policy"; 

:platform = "S3A"; 

:night_or_day = "night"; 

:sensor = "SLSTR"; 

:spatial_resolution = "0.25 degrees"; 

:geospatial_lon_units = "degrees_east"; 

geospatial_lat_units = "degrees_north"; 

:geospatial_lon_resolution = "0.25"; 

:geospatial_lat_resolution = "0.25";

}

netcdf file: 20230804-C3S-L3-FRP-SLSTR-P1D-0.1deg-S3A-gasflares-fv1.2.nc {

dimensions:

lon = 3600;

lat = 1800;

time = 1;

bounds = 2;

  variables:

float lon(lon=3600);

:units = "degrees_east";

:standard_name = "longitude";

:long_name = "longitude";

:bounds = "lon_bounds";

float lat(lat=1800);

:units = "degrees_north";

:standard_name = "latitude";

:long_name = "latitude";

:bounds = "lat_bounds";

double time(time=1);

:units = "days since 1970-01-01 00:00:00";

:standard_name = "time";

:long_name = "time";

:bounds = "time_bounds";

:calendar = "standard";

float lon_bounds(lon=3600, bounds=2);

float lat_bounds(lat=1800, bounds=2);

double time_bounds(time=1, bounds=2);

uint fire_pixels(time=1, lat=1800, lon=3600);

:_FillValue = 0U; // uint

:units = "1";

:long_name = "Total number of S3A at gasflares active fire pixels";

:_ChunkSizes = 1U, 18U, 3600U; // uint

float frp(time=1, lat=1800, lon=3600);

:_FillValue = NaNf; // float

:units = "MW";

:long_name = "Mean Fire Radiative Power measured by S3A at gasflares";

:_ChunkSizes = 1U, 18U, 3600U; // uint

float frp_unc(time=1, lat=1800, lon=3600);

:_FillValue = NaNf; // float

:units = "MW";

:long_name = "Mean Fire Radiative Power uncertainty measured by S3A at gasflares";

:_ChunkSizes = 1U, 18U, 3600U; // uint

uint fire_pixels_cloudfree(time=1, lat=1800, lon=3600);

:_FillValue = 0U; // uint

:units = "1";

:long_name = "Total number of S3A at gasflares active fire pixels of cloud-free grid cell contributions";

:_ChunkSizes = 1U, 18U, 3600U; // uint

float frp_cloudfree(time=1, lat=1800, lon=3600);

:_FillValue = NaNf; // float

:units = "MW";

:long_name = "Mean Fire Radiative Power of cloud-free grid cell contributions measured by S3A at gasflares";

:_ChunkSizes = 1U, 18U, 3600U; // uint

float frp_unc_cloudfree(time=1, lat=1800, lon=3600);

:_FillValue = NaNf; // float

:units = "MW";

:long_name = "Mean Fire Radiative Power uncertainty of cloud-free grid cell contributions measured by S3A at gasflares";

:_ChunkSizes = 1U, 18U, 3600U; // uint

// global attributes:

:title = "ECMWF C3S Gridded SLSTR Fire Radiative Power product";

:institution = "King\'s College London, Brockmann Consult GmbH";

:source = "ESA Sentinel-3 A+B SLSTR FRP";

:history = "Created on 20241018T232559Z";

:references = "See https://climate.copernicus.eu/";

:tracking_id = "41c46cc0-20ee-4613-8389-8af8e452b608";

:Conventions = "CF-1.7";

:summary = "The Copernicus Climate Change Service issues three Level 3 Fire Radiative Power (FRP) Products, each generated from Level 2 Sentinel-3 Active Fire Detection and FRP Products issued in NTC mode, which themselves are based on Sentinel 3 SLSTR data. The global Level 3 Daily FRP Products synthesise global data from the Level 2 AF Detection and FRP Product granules at 0.1 degree spatial and at 1-day temporal resolution, and also provide some adjustments for unsuitable atmospheric condition since e.g clouds can mask actively burning fires from view. These products are primarily designed for ease of use of the key information coming from individual granule-based Level 2 Products, for example in global modelling, trend analysis and model evaluation. Each product is available in separate files per platform (S3A, S3B, ...) and per nighttime and daytime observations.";

:keywords = "Fire Radiative Power, Climate Change, ESA, C3S, GCOS";

:id = "20230804-C3S-L3-FRP-SLSTR-P1D-0.1deg-S3A-gasflares-fv1.2.nc";

:naming_authority = "org.esa-cci";

:keywords_vocabulary = "NASA Global Change Master Directory (GCMD) Science  keywords";

:cdm_data_type = "Grid";

:comment = "These data were produced as part of the Copernicus Climate Change Service programme.";

:date_created = "20241018T232559Z";

:creator_name = "Brockmann Consult GmbH";

:creator_url = "https://www.brockmann-consult.de";

:creator_email = "info@brockmann-consult.de";

:contact = "http://copernicus-support.ecmwf.int";

:project = "EC C3S Fire Radiative Power";

:geospatial_lat_min = "-90";

:geospatial_lat_max = "90";

:geospatial_lon_min = "-180";

:geospatial_lon_max = "180";

:geospatial_vertical_min = "0";

:geospatial_vertical_max = "0";

:time_coverage_start = "20230804T000000Z";

:time_coverage_end = "20230804T000000Z";

:time_coverage_duration = "P1D";

:time_coverage_resolution = "P1D";

:standard_name_vocabulary = "NetCDF Climate and Forecast (CF) Metadata Convention";

:license = "EC C3S FRP Data Policy";

:platform = "S3A";

:night_or_day = "gasflares";

:sensor = "SLSTR";

:spatial_resolution = "0.1 degrees";

:geospatial_lon_units = "degrees_east";

:geospatial_lat_units = "degrees_north";

:geospatial_lon_resolution = "0.1";

:geospatial_lat_resolution = "0.1";

}

netcdf file: 20230830-C3S-L3-FRP-SLSTR-P27D-0.1deg-S3A-gasflares-fv1.2.nc { 

dimensions:   

lon = 3600;   

lat = 1800;   

time = 1;   

bounds = 2; 

variables:   

float lon(lon=3600);     

:units = "degrees_east";     

:standard_name = "longitude";     

:long_name = "longitude";     

:bounds = "lon_bounds";    

float lat(lat=1800);     

:units = "degrees_north";     

:standard_name = "latitude";     

:long_name = "latitude";     

:bounds = "lat_bounds";    

double time(time=1);     

:units = "days since 1970-01-01 00:00:00";     

:standard_name = "time";     

:long_name = "time";     

:bounds = "time_bounds";     

:calendar = "standard";    

float lon_bounds(lon=3600, bounds=2);    

float lat_bounds(lat=1800, bounds=2);    

double time_bounds(time=1, bounds=2);    

uint fire_pixels(time=1, lat=1800, lon=3600);     

:_FillValue = 0U; // uint      :units = "1";     

:long_name = "Total number of S3A at gasflares active fire pixels";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

float frp(time=1, lat=1800, lon=3600);     

:_FillValue = NaNf; // float     

:units = "MW";     

:long_name = "Mean Fire Radiative Power measured by S3A at gasflares";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

float frp_unc(time=1, lat=1800, lon=3600);     

:_FillValue = NaNf; // float     

:units = "MW";     

:long_name = "Mean Fire Radiative Power uncertainty measured by S3A at gasflares";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

uint fire_pixels_cloudfree(time=1, lat=1800, lon=3600);     

:_FillValue = 0U; // uint     

:units = "1";     

:long_name = "Total number of S3A at gasflares active fire pixels of cloud-free grid cell contributions";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

float frp_cloudfree(time=1, lat=1800, lon=3600);     

:_FillValue = NaNf; // float      :units = "MW";     

:long_name = "Mean Fire Radiative Power of cloud-free grid cell  contributions measured by S3A at gasflares";     

:_ChunkSizes = 1U, 18U, 3600U; // uint    

float frp_unc_cloudfree(time=1, lat=1800, lon=3600);     

:_FillValue = NaNf; // float     

:units = "MW";     

:long_name = "Mean Fire Radiative Power uncertainty of cloud-free grid cell  contributions measured by S3A at gasflares";     

:_ChunkSizes = 1U, 18U, 3600U; // uint  

// global attributes: 

:title = "ECMWF C3S Gridded SLSTR Fire Radiative Power product"; 

:institution = "King\'s College London, Brockmann Consult GmbH"; 

:source = "ESA Sentinel-3 A+B SLSTR FRP"; 

:history = "Created on 20241019T012411Z"; 

:references = "See https://climate.copernicus.eu/"; 

:tracking_id = "c83be3a0-ee13-45d2-888a-6cac2cde113d"; 

:Conventions = "CF-1.7"; 

:summary = "The Copernicus Climate Change Service issues three Level 3 Fire Radiative Power (FRP) Products, each generated from Level 2 Sentinel-3 Active Fire Detection and FRP Products issued in NTC mode, which themselves are based on Sentinel 3 SLSTR data. The global Level 3 27-Day FRP Products synthesise global data from the Level 2 AF Detection and FRP Product granules at 0.1 degree spatial and at 27-day temporal resolution, and also provide some adjustments for unsuitable atmospheric condition since e.g clouds can mask actively burning fires from view. These products are primarily designed for ease of use of the key information coming from individual granule-based Level 2 Products, for example in global modelling, trend analysis and model evaluation. Each product is available in separate files per platform (S3A, S3B, ...) and per nighttime and daytime observations."; 

:keywords = "Fire Radiative Power, Climate Change, ESA, C3S, GCOS"; 

:id = "20230830-C3S-L3-FRP-SLSTR-P27D-0.1deg-S3A-gasflares-fv1.2.nc"; 

:naming_authority = "org.esa-cci"; 

:keywords_vocabulary = "NASA Global Change Master Directory (GCMD) Science  keywords"; 

:cdm_data_type = "Grid"; 

:comment = "These data were produced as part of the Copernicus Climate Change Service programme."; 

:date_created = "20241019T012411Z"; 

:creator_name = "Brockmann Consult GmbH"; 

:creator_url = "https://www.brockmann-consult.de"; 

:creator_email = "info@brockmann-consult.de"; 

:contact = "http://copernicus-support.ecmwf.int"; 

:project = "EC C3S Fire Radiative Power"; 

:geospatial_lat_min = "-90"; 

:geospatial_lat_max = "90"; 

:geospatial_lon_min = "-180"; 

:geospatial_lon_max = "180"; 

:geospatial_vertical_min = "0"; 

:geospatial_vertical_max = "0"; 

:time_coverage_start = "20230830T000000Z"; 

:time_coverage_end = "20230925T000000Z"; 

:time_coverage_duration = "P27D"; 

:time_coverage_resolution = "P27D"; 

:standard_name_vocabulary = "NetCDF Climate and Forecast (CF) Metadata Convention"; 

:license = "EC C3S FRP Data Policy"; 

:platform = "S3A";  :night_or_day = "gasflares"; 

:sensor = "SLSTR"; 

:spatial_resolution = "0.1 degrees"; 

:geospatial_lon_units = "degrees_east";  :geospatial_lat_units = "degrees_north"; 

:geospatial_lon_resolution = "0.1"; 

:geospatial_lat_resolution = "0.1";

}

netcdf file: 20230801-C3S-L3-FRP-SLSTR-P1M-0.25deg-S3A-gasflares-fv1.2.nc { 

dimensions:   

lon = 1440;   

lat = 720;   

time = 1;   

bounds = 2; 

variables:   

float lon(lon=1440);     

:units = "degrees_east";     

:standard_name = "longitude";     

:long_name = "longitude";     

:bounds = "lon_bounds";    

float lat(lat=720);     

:units = "degrees_north";     

:standard_name = "latitude";     

:long_name = "latitude";     

:bounds = "lat_bounds";    

double time(time=1);     

:units = "days since 1970-01-01 00:00:00";     

:standard_name = "time";     

:long_name = "time";     

:bounds = "time_bounds";     

:calendar = "standard";    

float lon_bounds(lon=1440, bounds=2);    

float lat_bounds(lat=720, bounds=2);    

double time_bounds(time=1, bounds=2);    

uint fire_pixels(time=1, lat=720, lon=1440);     

:_FillValue = 0U; // uint     

:units = "1";     

:long_name = "Total number of S3A at gasflares active fire pixels";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

float frp(time=1, lat=720, lon=1440);     

:_FillValue = NaNf; // float     

:units = "MW";     

:long_name = "Mean Fire Radiative Power measured by S3A at gasflares";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

float frp_unc(time=1, lat=720, lon=1440);     

:_FillValue = NaNf; // float     

:units = "MW";     

:long_name = "Mean Fire Radiative Power uncertainty measured by S3A at gasflares";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

uint fire_pixels_cloudfree(time=1, lat=720, lon=1440);     

:_FillValue = 0U; // uint      :units = "1";     

:long_name = "Total number of S3A at gasflares active fire pixels of cloud- free grid cell contributions";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

float frp_cloudfree(time=1, lat=720, lon=1440);     

:_FillValue = NaNf; // float      :units = "MW";     

:long_name = "Mean Fire Radiative Power of cloud-free grid cell contributions measured by S3A at gasflares";     

:_ChunkSizes = 1U, 45U, 1440U; // uint    

float frp_unc_cloudfree(time=1, lat=720, lon=1440);     

:_FillValue = NaNf; // float      :units = "MW";     

:long_name = "Mean Fire Radiative Power uncertainty of cloud-free grid cell contributions measured by S3A at gasflares";     

:_ChunkSizes = 1U, 45U, 1440U; // uint  

// global attributes: 

:title = "ECMWF C3S Gridded SLSTR Fire Radiative Power product"; 

:institution = "King\'s College London, Brockmann Consult GmbH"; 

:source = "ESA Sentinel-3 A+B SLSTR FRP"; 

:history = "Created on 20241019T000606Z"; 

:references = "See https://climate.copernicus.eu/";  :tracking_id = "a3a25bc5-6465-414f-b3f3-65e6c9ff1f38"; 

:Conventions = "CF-1.7"; 

:summary = "The Copernicus Climate Change Service issues three Level 3 Fire Radiative Power (FRP) Products, each generated from Level 2 Sentinel-3 Active Fire Detection and FRP Products issued in NTC mode, which themselves are based on Sentinel 3 SLSTR data. The global Level 3 Monthly Summary FRP Products synthesise global data from the Level 2 AF Detection and FRP Product granules at 0.25 degree spatial and at 1 month temporal resolution, and also provide some adjustments for unsuitable atmospheric condition since e.g clouds can mask actively burning fires from view. These products are primarily designed for ease of use of the key information coming from individual granule-based Level 2 Products, for example in global modelling, trend analysis and model evaluation. Each product is available in separate files per platform (S3A, S3B, ...) and per nighttime and daytime observations."; 

:keywords = "Fire Radiative Power, Climate Change, ESA, C3S, GCOS"; 

 :id = "20230801-C3S-L3-FRP-SLSTR-P1M-0.25deg-S3A-gasflares-fv1.2.nc"; 

:naming_authority = "org.esa-cci"; 

:keywords_vocabulary = "NASA Global Change Master Directory (GCMD) Science keywords"; 

:cdm_data_type = "Grid"; 

:comment = "These data were produced as part of the Copernicus Climate Change Service programme."; 

:date_created = "20241019T000606Z"; 

:creator_name = "Brockmann Consult GmbH"; 

:creator_url = "https://www.brockmann-consult.de"; 

:creator_email = "info@brockmann-consult.de"; 

:contact = "http://copernicus-support.ecmwf.int"; 

:project = "EC C3S Fire Radiative Power"; 

:geospatial_lat_min = "-90"; 

:geospatial_lat_max = "90"; 

:geospatial_lon_min = "-180"; 

:geospatial_lon_max = "180"; 

:geospatial_vertical_min = "0"; 

:geospatial_vertical_max = "0"; 

:time_coverage_start = "20230801T000000Z"; 

:time_coverage_end = "20230831T000000Z"; 

:time_coverage_duration = "P1M"; 

:time_coverage_resolution = "P1M"; 

:standard_name_vocabulary = "NetCDF Climate and Forecast (CF) Metadata Convention"; 

:license = "EC C3S FRP Data Policy"; 

:platform = "S3A"; 

:night_or_day = "gasflares"; 

:sensor = "SLSTR"; 

:spatial_resolution = "0.25 degrees"; 

:geospatial_lon_units = "degrees_east"; 

:geospatial_lat_units = "degrees_north"; 

:geospatial_lon_resolution = "0.25";  :geospatial_lat_resolution = "0.25";

}