ERA5 Reanalysis (0.25 Degree Latitude-Longitude Grid)

ds633.0
| DOI: 10.5065/BH6N-5N20
 
Abstract:

For RDA ERA5 data prior to the beginning date of the Temporal Range, please see ds633.4: ERA5 back extension 1950-1978 (Preliminary version)

After many years of research and technical preparation, the production of a new ECMWF climate reanalysis to replace ERA-Interim is in progress. ERA5 is the fifth generation of ECMWF atmospheric reanalyses of the global climate, which started with the FGGE reanalyses produced in the 1980s, followed by ERA-15, ERA-40 and most recently ERA-Interim. ERA5 will cover the period January 1950 to near real time.

ERA5 is produced using high-resolution forecasts (HRES) at 31 kilometer resolution (one fourth the spatial resolution of the operational model) and a 62 kilometer resolution ten member 4D-Var ensemble of data assimilation (EDA) in CY41r2 of ECMWF's Integrated Forecast System (IFS) with 137 hybrid sigma-pressure (model) levels in the vertical, up to a top level of 0.01 hPa. Atmospheric data on these levels are interpolated to 37 pressure levels (the same levels as in ERA-Interim). Surface or single level data are also available, containing 2D parameters such as precipitation, 2 meter temperature, top of atmosphere radiation and vertical integrals over the entire atmosphere. The IFS is coupled to a soil model, the parameters of which are also designated as surface parameters, and an ocean wave model. Generally, the data is available at an hourly frequency and consists of analyses and short (12 hour) forecasts, initialized twice daily from analyses at 06 and 18 UTC. Most analyses parameters are also available from the forecasts. There are a number of forecast parameters, e.g. mean rates and accumulations, that are not available from the analyses.

Improvements to ERA5, compared to ERA-Interim, include use of HadISST.2, reprocessed ECMWF climate data records (CDR), and implementation of RTTOV11 radiative transfer. Variational bias corrections have not only been applied to satellite radiances, but also ozone retrievals, aircraft observations, surface pressure, and radiosonde profiles.

Please note: DECS is producing a CF 1.6 compliant netCDF-4/HDF5 version of ERA5 for the CISL RDA at NCAR. The netCDF-4/HDF5 version is the de facto RDA ERA5 online data format. The GRIB1 data format is only available via NCAR's High Performance Storage System (HPSS). There is a one-to-one correspondence between the netCDF-4/HDF5 and GRIB1 files, with as much GRIB1 metadata as possible incorporated into the attributes of the netCDF-4/HDF5 counterpart.

Acknowledgement:

This dataset contains modified Copernicus Climate Change Service information. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.

Temporal Range:
1959-01-01 00:00 +0000 to 2022-10-31 23:00 +0000 (Entire dataset) Period details by dataset product
Updates:
Monthly
Variables:
Air Temperature Albedo Albedo Atmospheric Ozone
Cloud Frequency Cloud Liquid Water/Ice Convection Convergence
Dew Point Temperature Evaporation Geopotential Height Gravity Wave
Heat Flux Humidity Ice Extent Incoming Solar Radiation
Longwave Radiation Outgoing Longwave Radiation Planetary Boundary Layer Height Precipitation Amount
Runoff Sea Level Pressure Sea Surface Temperature Shortwave Radiation
Skin Temperature Snow Snow Density Snow Depth
Snow Melt Snow/Ice Temperature Snow/Ice Temperature Soil Classification
Soil Moisture/Water Content Soil Temperature Surface Pressure Surface Roughness
Surface Winds Total Precipitable Water Upper Air Temperature Upper Level Winds
Vegetation Cover Vegetation Species Vertical Wind Velocity/Speed Vorticity
Water Vapor Wind Stress
GRIB parameter table: HTML | XML
Vertical Levels:
See the detailed metadata for level information.
Data Types:
Grid
Spatial Coverage:
Longitude Range: Westernmost=180W Easternmost=180E
Latitude Range: Southernmost=90S Northernmost=90N Detailed coverage information
Data Contributors:
ECMWF
European Centre for Medium-Range Weather Forecasts
Publications:
Malardel, S., N. Wedi, W. Deconinck, M. Diamantakis, C. Kuhnlein, G. Mozdzynski, M. Hamrud, and P. Smolarkiewicz, 2015: A new grid for the IFS. Newsletter No. 146 - Winter 2015/16, ECMWF, 6 pp.

Total Volume:
1.35 PB (Entire dataset) Volume details by dataset product
Data Formats:
Related RDA Datasets:
 - 
ERA-Interim Project
 - 
ERA-Interim Project, Monthly Means
 - 
ERA-Interim Project, Single Parameter 6-Hourly Surface Analysis and Surface Forecast Time Series
 - 
JRA-55: Japanese 55-year Reanalysis, Daily 3-Hourly and 6-Hourly Data
 - 
JRA-55: Japanese 55-year Reanalysis, Monthly Means and Variances
 - 
ERA5 Reanalysis
 - 
ERA5 Reanalysis Monthly Means
 - 
ERA5 Reanalysis (Monthly Mean 0.25 Degree Latitude-Longitude Grid)
 - 
ERA5.1: Corrections to ERA5 Stratospheric Temperature 2000-2006
 - 
ERA5 Modes of Interannual Variability
 - 
ERA5 back extension 1950-1978 (Preliminary version)
 - 
ERA5 monthly mean back extension 1950-1978 (Preliminary version)
 - 
ERA5 Reanalysis Model Level Data
More Details:
View a more detailed summary of the data, including specific date ranges and locations by parameter
Metadata Record:
Data License:
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