Atmosphere, Ocean waves, Land surface

An ensemble of ten atmospheric model integrations for the years 1899 to 2009/2010.

There are two versions of the ERA-20CM atmospheric model integrations.

ERA-20C is ECMWF's first atmospheric reanalysis of the 20th century, from 1900-2010. It assimilates observations of surface pressure and surface marine winds only. It is available on 37 pressure levels, 16 potential temperature levels, and 2 potential vorticity levels.

ERA-40 is an ECMWF re-analysis of the global atmosphere and surface conditions for 45-years, over the period from September 1957 through August 2002.

An atlas of key atmospheric variables was produced for ERA-40

ERA-Interim is a global atmospheric reanalysis from 1979, continuously updated in real time. The data products include a variety of surface parameters, describing weather as well as ocean-wave and land-surface conditions. It further includes parameters covering the troposphere and stratosphere, offering a range of 60 pressure levels.

It’s successor is the ERA5 reanalysis from the Copernicus Climate Change Service.

There are two versions of the ERA-20CM atmospheric model integrations.

Each is comprised of a 10-member ensemble using:

ERA-20C is ECMWF's first atmospheric reanalysis of the 20th century, from 1900-2010. It assimilates observations of surface pressure and surface marine winds only. It is an outcome of the ERA-CLIM project.

Product description

The configuration of the ERA-20C reanalysis is described in  Poli et al. (2016).