GISS Surface Temperature Analysis (v4)
Data Downloads
Monthly surface temperature anomaly data are available for download in several forms: plain-text tables of Land-Ocean Temperature Index (LOTI) deviations from the 1951-1980 means, plain-text tables of AIRS anomalies from the 2007-2016 means, netCDF data files on a regular 2°×2° regular grid, compressed Zarr (v3) data directories on a regular 2°×2° regular grid, and compressed basic subbox (SBBX) data on an equal-area grid. Example Fortran codes for working with the gridded data are also provided.
Tables of Global and Hemispheric Monthly Means and Zonal Annual Means
Combined Land-Surface Air and Sea-Surface Water Temperature Anomalies (Land-Ocean Temperature Index, L-OTI)
The following are plain-text files in tabular format of temperature anomalies, i.e. deviations from the corresponding 1951-1980 means.
- Global-mean monthly, seasonal, and annual means, 1880-present, updated through most recent month: TXT, CSV
- Northern Hemisphere-mean monthly, seasonal, and annual means, 1880-present, updated through most recent month: TXT, CSV
- Southern Hemisphere-mean monthly, seasonal, and annual means, 1880-present, updated through most recent month: TXT, CSV
- Zonal annual means, 1880-present, updated through most recent complete year: TXT, CSV
AIRS v6 and AIRS v7 Temperature Anomalies
The following tables show anomalies based on AIRS data vs. 2007-2016. Corresponding L-OTI anomaly data are also provided.
- Global-mean monthly, seasonal, and annual means, 2002-present, updated through most recent month: TXT, CSV
- Northern Hemisphere-mean monthly, seasonal, and annual means, 2002-present, updated through most recent month: TXT, CSV
- Southern Hemisphere-mean monthly, seasonal, and annual means, 2002-present, updated through most recent month: TXT, CSV
- Zonal annual means, 2002-present, updated through most recent complete year: TXT, CSV
Gridded Monthly Temperature Anomaly Data
Users interested in the entire gridded surface air temperature anomaly data may download netCDF files containing selected series on a regular 2°×2° grid or the basic SBBX binary files.
Compressed NetCDF Files (regular 2°×2° grid)
- Land-Ocean Temperature Index, ERSSTv5, 1200km smoothing (23 MB)
- Surface air temperature (no ocean data), 250km smoothing (9 MB)
- Land Mask on a 2°×2° grid
Compressed Zarr (v3) Directories (Regular 2°×2° Grid)
- Land-Ocean Temperature Index, ERSSTv5, 1200km smoothing (53 MB)
- Surface air temperature (no ocean data), 250km smoothing (27 MB)
Compressed Basic Subbox Grid Series (Equal-Area Grid)
- Surface air temperature, 1200km smoothing - GISTEMP v4 (27 MB)
- Surface air temperature, 250km smoothing - GISTEMP v4 (9 MB)
- Sea surface air temperature (ERSSTv5), currently used (30 MB)
- Sea surface air temperature (ERSSTv4), used until July 2017 (30 MB)
- Sea surface air temperature (ERSSTv3b), used until June 2015 (30 MB)
- Sea surface air temperature (HadR2), used until Nov. 2012 (30 MB)
Related Fortran Code
Also available are various Fortran programs and instructions to create (time series of) regular gridded anomaly maps from the basic files. Be sure to read the README file for discussion of the files' binary format.
Contact
Before contacting us, please check if your question about the GISTEMP analysis is already answered in the FAQ.
If the FAQ does not answer your question, please address your inquiry to Dr. Reto Ruedy.
