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For the time being and until further notice,ERA-Interim (1st January 1979 to 31st August 2019) shall continue to be accessibleaccess through the ECMWF Web API stopped on 01 June 2023 Its successor ERA5 is available from the . Keeping in mind that ERA-Interim is published with an offset of about three months from the dataset's reference date, ERA-Interim August 2019 data will be made available towards the end of October 2019.ERA5 is now available from the Climate Data Store (CDS) (What are the changes from ERA-Interim to ERA5?) and users are strongly advised to migrate to ERA5 (How to download ERA5). For those users who still need access to ERA-Interim after 01 June 2023 (subject to further notice), they can do so via the Climate Data Store (CDS) API migrate from ECMWF Web API to CDS API). |
ERA-Interim and ERA-Interim/Land are two ECMWF Re-Analysis datasets. The main difference between ERA-interim and ERA-Interim/Land is the version of the TESSEL land-surface model (Tiled ECMWF Scheme for Surface Exchanges over Land).
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Both ERA/Interim and ERA-Interim/Land use four soil depth layers as follows:
| Level | Top (m) | Bottom (m) | Thickness (m) |
|---|---|---|---|
| 1 | 0.0 | 0.07 | 0.07 |
| 2 | 0.07 | 0.28 | 0.21 |
| 3 | 0.28 | 1 | 0.72 |
| 4 | 1 | 2.89 | 1.89 |
Soil moisture is available in both datasets with values typically between 0.1 and 0.4 in cubic meter water per cubic meter volume. ERA-Interim/Land should be preferred over ERA-Interim and make sure to select 'Analysis' when downloading the ERA-Interim/Land data.
For detailed documentation see Balsamo et al., 2012.
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van den Hurk, B., P. Viterbo, A. Beljaars and A.K. Betts, 2000: Offline validation of the ERA-40 surface scheme, ECMWF Tech. Memo. 295,44 pp., doi: 10.21957/9aoaspz8
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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 signed on 11/11/2014). 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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