...
| Note |
|---|
To generate this ERA5 hourly time series dataset, homogenisation conventions have been applied to the ERA5 source GRIB data to ensure consistency, usability, and alignment across chosen variables and time steps. The processed data were then written to an ARCO Zarr archive, enabling efficient cloud-optimised access and scalable data retrieval. Please see details below. The dataset presented here is a subset of selected parameters from the full CDS ERA5 pressure levels hourly dataset. Requirements for additional parameters may be considered. Please raise your request with ECMWF Support here. |
...
ERA5 is the fifth generation ECMWF reanalysis for the global climate and weather and currently covers the past 80 years. It covers the period from January 1940 to the present with hourly sampling and continues to be extended forward in time with a latency of 5 days behind real time.
This dataset presented here is a 6-hourly subset of some parameters of the full CDS ERA5 pressure levels hourly dataset on 0.25 degrees resolution and is stored in Analysis Ready Cloud Optimised (ARCO) format, which has been implemented for retrieving long time-series for a single point in a efficient way.
Methodology
| Anchor | ||||
|---|---|---|---|---|
|
The process to generate this dataset involves:
...
The pressure levels parameters have a grid of 0.25 degrees.
| Note |
|---|
Please be aware when you select a "Location" on the form, the latitude and longitude values are rounded to the closest neighborhood point of the 0.25 degrees griddegrees grid. Similarly, selecting an “Area” returns all points within the region defined by the nearest neighborhood corner points to the user-specified S, W, N, and E latitude/longitude values. |
Temporal frequency
Temporal frequency of the data is 6-hourly at 00:00 , 06:00, 12:00, 18:00 UTC.
...
Table 1: pressure levels parameters
| Name | Units | Variable name | Notes | |
|---|---|---|---|---|
| 1 | Geopotential | m2 s-2 | geopotential | |
| 2 | Specific humidity | kg kg-1 | specific_humidity | |
| 3 | Temperature | K | temperature | |
| 4 | U component of wind | m s-1 | u_component_of_wind | |
| 5 | V component of wind | m s-1 | v_component_of_wind | |
| 6 | Vertical velocity | Pa s-1 | vertical_velocity |
Known issues
Please refer to the ERA5 documentation.
...