Browse reanalysis datasets

ECMWF uses its forecast models and data assimilation systems to 'reanalyse' archived observations, creating global data sets describing the recent history of the atmosphere, land surface, and oceans. 

DatasetTime periodAtmosphereAtmospheric compositionOcean wavesOcean sub-surfaceLand surfaceSea IceObservation Feedback ArchiveDownload using MARS web interface
(unless stated otherwise)
ERA51979-presentYes Yes Yes  

Get ERA5 from the Climate Data Store

1950-1978 preliminaryYes Yes Yes  

Get ERA5 preliminary from the Climate Data Store

ERA5-Land  1950-present  

 

 Yes  

Get ERA5-Land from the Climate Data Store

ERA-Interim1979-August 2019Yes Yes

 

Yes  Explore ERA-Interim
ERA-Interim/Land1979-2010   

 

Yes  Explore ERA-Interim/Land
CERA-SAT  2008-2016Yes YesYesYesYes Explore CERA-SAT

CERA-20C

1901-2010Yes YesYesYesYes

 

Explore CERA-20C
ERA-20CM1900-2010Yes Yes

 

Yes  Explore ERA-20CM
ERA-20C1900-2010Yes Yes

 

Yes YesExplore ERA-20C
ERA-20CL1900-2010    Yes  Contact ECMWF
ERA-401957-2002Yes Yes

 

Yes  Explore ERA-40
ORAS41958-2015   Yes   Get ORAS4 from the Ocean Synthesis/Reanalysis Directory
ORAP51979-2013   Yes Yes Get ORAP5 from the Ocean Synthesis/Reanalysis Directory
ORAS51975-present   Yes Yes Get ORAS5 from the Ocean Synthesis/Reanalysis Directory
ORA-20C  1900-2010   Yes Yes Get ORA-20C from the Ocean Synthesis/Reanalysis Directory
CAMS RA (EAC4)2003- June 2020YesYes     Get CAMS RA (EAC4) from the Atmosphere Data Store
CAMS GHG RA (EGG4)2003- June 2020YesYes     Get CAMS GHG RA (EGG4) from the Atmosphere Data Store
MACC2003-2014YesYes     Explore MACC

Atlas and Picture Gallery

An atlas of key atmospheric variables was produced for ERA-40 and there is picture gallery for ERA-15