An Informed  Guide to Climate Data Sets

List of Available Atmospheric (Surface) Data Sets
(Please click on the data set name for detailed information.)

Name Variable(s) Period of Record Coverage Comments
CMAP Precipitation 1979-Current Ocean
Monthly, Pentad (5-day)
2.5o x 2.5o
Precipitation data set based on gauge observations, satellite estimates, and numerical model outputs.
I-COADS Cloudiness
Sea level pressure
Sea surface temperature
Specific humidity
Surface wind
Air temperature
Other
1784-1997 Ocean
Monthly
2o x 2o (1784-1997)
1o x 1o (1960-1997)
Gridded archive of surface marine weather observations. No processing beyond quality control.
CRU TS 2.0 Air temperature
Cloudiness
Daily temperature range
Precipitation
Vapor pressure
1901-2000 Land
Monthly
0.5o x 0.5o
A comprehensive set of high-resolution grids of monthly climate for the globe.
Dai Precipitation 1851-1996 Land
Monthly
2.5o x 2.5o
Gridded archive of precipitation based on land stations only. Empirical corrections applied for changes in instrumentation and station location.
HadISST Sea surface temperature
Sea ice concentration
1870-Current Ocean
Monthly
1o x 1o
SST/Sea ice concentration data sets containing in situ sea surface observations and satellite derived estimates at the sea surface.
Hulme (CRU) Precipitation 1900-1998 Land
Monthly
2.5o x 3.75o
5o x 5o
Gridded archive of precipitation timeseries for a large number of stations.
Jones (CRU) Air Temperature Air temperature 1856-Current Land and Ocean
Monthly
5o x 5o
Land-surface meteorological data and fixed-position weather ship data as well as in situ measurements from ships and buoys make up this gridded data set.
Jones (CRU) SLP Sea level pressure 1873-Current Land and Ocean
Monthly
Northern Hemisphere
5o x 10o lat/lon
Individual station pressure data used to form reconstruction of monthly mean sea level grid-point pressure using multivariate regressions technique.
Kaplan (SLP) Sea level pressure 4/1854-12/1992 Ocean
Monthly
4o x 4o
Reduced space optimal interpolation of COADS SLP anomaly.
Kaplan (SST) Sea surface temperature 1856-1991 Ocean
Monthly
5o x 5o
Reduced space optimal smoother performed on MOHSST5 observational data set of the GOSTA atlas.
Lucas and Waliser Satellite ECT-Corrected OLR Outgoing longwave radiation (OLR) 6/1974-12/1999 Land and Ocean
Daily/Pentad/Monthly
2.5o x 2.5o
OLR dataset where the bias from varying satellite equatorial crossing times (ECT's) has been estimated and then removed.
NCAR Sea Level Pressure Sea level pressure 1/1899-Current Land and Ocean
Daily / Monthly
5o x 5o
Northern Hemisphere
Gridded analysis of SLP based on land station reports. Quality controlled raw data plus empirical corrections for changes in instrumentation and station location.
NCEP/NCAR Reanalysis Air temperature
Cloudiness
Geopotential heights
Humidity
Omega
Outgoing longwave radiation
Sea level pressure
Sea surface temperature
Winds
Other
1948-Current Land and Ocean
4X daily/Daily/Monthly
2.5o x 2.5o/T42/T62
Pressure Levels
Sigma Levels
Theta Surfaces
The goal of this joint NCEP/NCAR effort is to produce new atmospheric analyses using historical data (1948 onwards) and as well to produce analyses of the current atmospheric state (Climate Data Assimilation System, CDAS).
Reynolds Reconstructed SST Sea surface temperature 1950-1999 Ocean
Monthly
2o x 2o
EOF methods are used to create these grids using marine surface data for 45S-69N with climatology fill in areas north and south of these limits.
Reynolds Optimum Interpolation (OI) SST Sea surface temperature 1981-Current Ocean
Monthly
1o x 1o
This optimum interpolation (OI) sea surface temperature analysis uses in situ and satellite SST's plus SST's simulated by sea-ice cover.
Reynolds Optimum Interpolation Version 2 ( OI.v2) SST Sea surface temperature 1981-Current Ocean
Weekly/Monthly
1o x 1o
Next generation version of the Reynolds OI SST Data set. Improvements in high latitude SST's have been made, as well as the reduction of residual satellite biases over areas with sparse data coverage.
Smith and Reynolds Extended Reconstructed SLP (ERSLP) Sea level pressure 1854-1997 Land
Monthly
2.0o x 2.0o
The ERSLP was constructed using the most recently available I-COADS SLP data and improved statistical methods that allow stable reconstruction using sparse data.
Smith and Reynolds Extended Reconstructed SST (ERSST) Sea surface temperature 1854-Current Ocean
Monthly
2o x 2o
The ERSST dataset was constructed using the I-COADS SST data and improved statistical methods that allow stable reconstruction using sparse data. Replaces the Reynolds Reconstructed SST dataset.

Updated: 10/30/03
Maintained by asphilli@ucar.edu