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The AgERA5 includes 22 agronomic relevant variables. See Table 3-1.
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Short name | Long name | Unit | Aggregation | AGROVOC URI |
Cloud_Cover_Mean | Total cloud cover (00-00LT) | (0 - 1) | Mean | |
Dew_Point_Temperature_2m_Mean | 2 meter dewpoint temperature (00-00LT) | K | Mean | |
Preciptation_Flux | Total precipitation (00-00LT) | mm d-1 | Sum | |
Preciptation_Rain_Duration_Fraction | Precipitation type duration - rain (00-00LT) | - | Count | |
Preciptation_Solid_Duration_Fraction | Precipitation type duration - solid fraction (no hail) composed of: precipitation types freezing rain (3), snow (5), wet snow (6), mixture of rain and snow (7) and ice pellets (8) (00-00LT) | - | Count | |
Relative_Humidity_2m_06h | Relative humidity at 06LT | % | - | |
Relative_Humidity_2m_09h | Relative humidity at 09LT | % | - | |
Relative_Humidity_2m_12h | Relative humidity at 12LT | % | - | |
Relative_Humidity_2m_15h | Relative humidity at 15LT | % | - | |
Relative_Humidity_2m_18h | Relative humidity at 18LT | % | - | |
Snow_Thickness_LWE_Mean | Snow liquid water equivalent (00-00LT) | cm of liquid water equivalent | Mean | |
Snow_Thickness_Mean | Snow depth (00-00LT) | cm snow | Mean | |
Solar_Radiation_Flux | Surface solar radiation downwards (00-00LT) | J m-2d-1 | Sum | |
Temperature_Air_2m_Max_24h | Maximum air temperature at 2 meter (00-00LT) | K | Maximum | |
Temperature_Air_2m_Max_Day_Time | Maximum air temperature at 2 meter (06-18LT) | K | Maximum | |
Temperature_Air_2m_Mean_24h | 2 meter air temperature (00-00LT) | K | Mean | |
Temperature_Air_2m_Mean_Day_Tim e |
| K | Mean | |
Temperature_Air_2m_Mean_Night_Ti me |
| K | Mean | |
Temperature_Air_2m_Min_24h | Minimum air temperature at 2 meter (00-00LT) | K | Minimum | |
Temperature_Air_2m_Min_Night_Time | Minimum air temperature at 2 meter (18-06LT) | K | Minimum | |
Vapour_Pressure_Mean | Vapour pressure (00-00LT) | hPa | Mean | |
Wind_Speed_10m_Mean | 10 meter wind component (00-00LT) | m s-1 | Mean |
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Logically the ERA5 data set is the main input data set. See https://www.ecmwf.int/en/forecasts/datasets/reanalysis-datasets/era5 ERA5 provides hourly estimates of a large number of atmospheric, land and oceanic climate variables. The data cover the earth on a 30 km grid and resolve the atmosphere using 137 levels from the surface up to a height of 80 km. ERA5 includes information about uncertainties for all variables at reduced spatial and temporal resolutions.
Concerning the archive the years 1979 to present were available during the project. The remaining ERA5 dataset from 1950 to 1978 was expected to be available for use by summer 2019. Note that two versions of ERA5 are available through the CDS:
- interpolated to a 0.25° grid
- original ERA5 model level data (reanalysis-era5-complete) The latter version was used in this project.
In addition, publication of quality-assured monthly updates of ERA5 were about to start during the project. These monthly additions then come available within 3 months of real time. Finally, preliminary daily updates of the dataset will be made available to users within 7 days of real time. This was expected to start later in 2019.
ERA5 has a wide list of variables. See the following link: https://software.ecmwf.int/wiki/display/CKB/ERA5+data+ ERA5: data documentation, especially the tables:
- 2: surface, instantaneous (averages)
- 3: surface, accumulations
- 4: surface, minimum/maximum
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https://www.ecmwf.int/en/forecasts/datasets/reanalysis-datasets/era5
https://software.ecmwf.int/wiki/display/CKB/ERA5+data+documentation
http://marswiki.jrc.ec.europa.eu/agri4castwiki/index.php/Meteorological_data_from_ECMWF_mo dels.
https://confluence.ecmwf.int/display/CKB/ERA5%3A+What+is+the+spatial+reference
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This document has been produced in the context of the Copernicus Climate Change Service (C3S). The activities leading to these results have been contracted by the European Centre for Medium-Range Weather Forecasts, operator of C3S on behalf of the European Union (Delegation agreement Agreement signed on 11/11/2014 and Contribution Agreement signed on 22/07/2021). All information in this document is provided "as is" and no guarantee or warranty is given that the information is fit for any particular purpose. The users thereof use the information at their sole risk and liability. For the avoidance of all doubt , the European Commission and the European Centre for Medium - Range Weather Forecasts have no liability in respect of this document, which is merely representing the author's view. |
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