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ERA-Interim and ERA-Interim/Land use the same models, but different parametrizations:

  • ERA-Interim uses the TESSEL scheme (Tiled ECMWF Scheme for Surface Exchanges over Land)
  • ERA-Interim/Land uses the H-TESSEL scheme (Hydrology Tiled ECMWF Scheme for Surface Exchanges over Land)


For details on ERA-interim see Berrisford et al (2011): The ERA-Interim archive Version 2.0. ECMWF

For details on ERA-interim/Land see: G. Balsamo, C. Albergel, A. Beljaars, S. Boussetta, E. Brun, H. L. Cloke, D. Dee, E. Dutra, J. Muñoz-Sabater, F. Pappenberger, P. de Rosnay, T. Stockdale, and F. Vitart, 2015: “ERA-Interim/Land: A global land surface reanalysis data set“. Hydrol. Earth Syst. Sci., 19, 389-407, doi:10.5194/hess-19-389-2015, 2015.

ERA-Interim production to stop on 31st August 2019

As ERA5 is now available (What are the changes from ERA-Interim to ERA5?), we are preparing to stop the production of ERA-Interim on 31st August 2019. This means that the complete span of ERA-Interim data will be from 1st January 1979 to 31st August 2019.

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 2019.

For the time being and until further notice, ERA-Interim shall continue to be accessible through the ECMWF Web API. ERA5 is available from the Climate Data Store (CDS).