Climate data guide content with tag GRIB
CERA-20C: ECMWF's Coupled Ocean-Atmosphere Reanalysis of the 20th Century
Years of record
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The CERA-20C is a global, coupled reanalysis spanning 1901-2010 with a focus on low-frequency climate variability. Similar to ERA-20C, the surface observations assimilated include surface pressures from the International Surface Pressure Databank v3.2.6 and ICOADS v 2.5.1, and surface winds over the oceans from ICOADSv2.5.1. Upper-air and satellite data are…
Main variables and Earth System components
Atmosphere Multiple variables Cryosphere Sea Ice Concentration OceanExperts contributing reviews
- Laloyaux, Patrick
Climate Forecast System Reanalysis (CFSR)
Years of record
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The CFSR is a third generation reanalysis product. It is a global, high resolution, coupled atmosphere-ocean-land surface-sea ice system designed to provide the best estimate of the state of these coupled domains over this period. The CFSR includes (1) coupling of atmosphere and ocean during the generation of the 6 hour guess field, (2) an interactive sea-ice model, and…
Main variables and Earth System components
Atmosphere Air Temperature Geopotential Height Precipitable water Ocean-
Formats
- GRIB
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Timestep
- Sub-daily, Monthly
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Domain
- Global
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Collections
- Climate Analysis Section (CAS) Data Catalog
Experts contributing reviews
- N/A
ERA-20C: ECMWF's atmospheric reanalysis of the 20th century (and comparisons with NOAA's 20CR)
Years of record
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The ECMWF's first atmospheric reanalysis of the 20th Century, ERA-20C, provides a long, gridded dataset of many climate variables, spanning 1900-2010. Observations assimilated include surface pressures from the International Surface Pressure Databank v3.2.6 and ICOADS v 2.5.1, and surface winds over the oceans from ICOADSv2.5.1. Upper-air and satellite data…
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Timestep
- Sub-daily, Daily, Monthly
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Domain
- Global
Experts contributing reviews
- Poli, Paul
ERA-Interim
Years of record
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Using a much improved atmospheric model and assimilation system from those used in ERA-40, ERA-Interim represents a third generation reanalysis. Several of the inaccuracies exhibited by ERA-40 such as too-strong precipitation over oceans from the early 1990's onwards and a too-strong Brewer-Dobson circulation in the stratosphere, were eliminated or significantly reduced…
Main variables and Earth System components
Atmosphere Air Temperature Geopotential Height Precipitable water Precipitation-
Timestep
- Sub-daily, Daily, Monthly
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Domain
- Global
Experts contributing reviews
- Dee, Dick
ERA5 atmospheric reanalysis
Years of record
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ERA5, the successor to ERA-Interim, provides global, hourly estimates of atmospheric, ocean-wave and land-surface variables, at a horizontal resolution of 31 km and 137 levels in the vertical from the surface to 0.01 hPa (about 80km). Produced by ECMWF on behalf of the European Union’s Copernicus Climate Change Service (C3S), ERA5 extends from 1940 onwards. Each day one…
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Timestep
- Sub-daily, Daily, Monthly
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Domain
- Global
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Collections
- Diagnostic Data Sets
Experts contributing reviews
- Hersbach, Hans
GODAS: NCEP Global Ocean Data Assimilation System
Years of record
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GODAS is a real-time ocean analysis and a reanalysis. It is used for monitoring, retrospective analysis as well as for providing oceanic initial conditions for the CFS. Both temperature and synthetic salinity profiles are assimilated in a 3DVAR scheme. Beginning with March 2007, altimetry sea level is assimilated.
Main variables and Earth System components
Ocean 3D Velocity SST - sea surface temperature Salinity heat flux isothermal layer depth mixed layer depth potential temperature salt flux sea surface height-
Timestep
- Monthly, Pentad
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Domain
- Global
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Collections
- Climate Analysis Section (CAS) Data Catalog
Experts contributing reviews
- N/A
JRA-55
Years of record
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Spanning 1958-present, JRA-55 is the longest third-generation reanalysis that uses the full observing system (in contrast, products like ERA-20C and NOAA 20CR assimilate a very limited set of observations while NCEP R1 uses an antiquated model and assimilation scheme). Compared to the previous generation Japanese Meteorological Agency (JMA) reanalysis, JRA-25, JRA-…
Main variables and Earth System components
Atmosphere Air Temperature Geopotential Height Precipitable waterExperts contributing reviews
- Kobayashi, Shinya
JRA-55C (reanalysis using conventional observations)
Years of record
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JRA-55C is a fixed observing system atmospheric reanalysis that uses the same model and data assimilation scheme as JRA-55. The observations assimilated include surface station data, radiosondes, tropical cyclone retrievals and wind profilers. No satellite observations are included. JRA-55C spans November, 1972 thru December, 2012 but may be extended back to…
Main variables and Earth System components
N/AExperts contributing reviews
- Kobayashi, Chiaki
NCEP NARR
Years of record
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A high resolution (32km x 29 pressure levels) data set focused upon the North American Region. Relative to the NCEP-DOE (R2) it has a much improved land-hydrology, diurnal cycle and land-atmosphere interaction. As such, it can be considered a second generation reanalysis. A unique feature is the direct assimilation of observed precipitation.
Main variables and Earth System components
Atmosphere Air Temperature Geopotential Height Precipitable water Land-
Formats
- GRIB
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Timestep
- Climatology, Sub-daily, Monthly
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Domain
- North America
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Collections
- N/A
Experts contributing reviews
- N/A
NCEP-NCAR (R1): An Overview
Years of record
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NCEP-NCAR (R1) is the original reanalysis effort. It uses a frozen global state-of-the-art global data assimilation system (as of 11 January 1995). The original database was enhanced (additional, quality checked datasets) by NCAR's Data Support Section. Originally planned to span 1957-96 ("40-Year Reanalysis Project"), it was extended back to 1948 and continues to this…
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Timestep
- Sub-daily, Daily, Monthly
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Domain
- Global
Experts contributing reviews
- N/A
NLDAS: North American Land Data Assimilation System
Years of record
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The North American Land Data Assimilation System (NLDAS) integrates a large quantity of observation-based and model reanalysis data to produce long-term hourly atmospheric forcing data, and then uses this meteorological data to drive offline (not coupled to the atmosphere) land-surface and/or hydrological models. The spatial resolution of NLDAS is at 1/8th-degree…
Main variables and Earth System components
Atmosphere Air Temperature CAPE Evaporation Precipitation Radiation Specific Humidity Surface Pressure Wind-
Timestep
- Climatology, Sub-daily, Monthly
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Domain
- North America
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Collections
- N/A
Experts contributing reviews
- Xia, Youlong, Mocko, David
NOAA 20th-Century Reanalysis, Version 2 and 2c
Years of record
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The Twentieth Century Reanalysis (20CR) provides a comprehensive global atmospheric circulation data set spanning 1850-2014. Its chief motivation is to provide an observational validation data set, with quantified uncertainties, for assessing climate model simulations of the 20th century, with emphasis on the statistics of daily weather. The analyses are generated by…
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Timestep
- Sub-daily, Daily, Monthly
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Domain
- Global
Experts contributing reviews
- N/A
SST data: COBE: Centennial in situ Observation-Based Estimates
Years of record
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The COBE data set is a spatially complete, interpolated 1°x1° SST product for 1891 to present. It combines SSTs from ICOADS release 2.0, the Japanese Kobe collection, and reports from ships and buoys. Data are gridded using optimal interpolation. As in HadISST, data up to 1941 were bias-adjusted using the "bucket correction." Prior to the interpolation analyses, data…
Experts contributing reviews
- N/A