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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 hourly data on single levels (1940–present). Requirements for additional parameters may be considered. Please raise your request with ECMWF Support here. |
Introduction
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 with 5 days behind real time.
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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 grid for atmospheric parameters and 0.5 degrees grid for wave parameters. |
Temporal frequency
Temporal frequency of the data is hourly and every day has 24 hourly steps.
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