GISS Surface Temperature Analysis
Station Data
In our analysis, we can only use stations with reasonably long, consistently measured time records. This is a subset of the full list of stations (copied from GHCN_v3's website and augmented from SCAR). That subset of list of stations that contribute to the final products may slightly change with each update, as the number of stations that get dropped due to the shortness of their temperature record may decrease when new data are added.
The figures below indicate
- the number of stations with record length at least N years as a function of N ,
- the number of reporting stations as a function of time,
- the percent of hemispheric area located within 1200km of a reporting station.
Data and graphs for the individual stations can be downloaded using the form below.
We also provide access to the last release that was based on GHCN version 2 data. It is an archive of the GISTEMP station record from Nov 2011 when we discontinued the use of NCDCs GHCNv2 dataset and is provided only as a historical facility. The differences between this station data set and our current station dataset are due to the switch from GHCN v2 to GHCN v3.2, and the reliance on NCDC homogenizations of station data instead of our own original methodology.For details see FAQ
You may also download all GISS homogenized station data as a compressed text file.
Download Station Data
Note: In the tables, DJF, the Northern Hemisphere Winter mean, uses the December of the previous year, and so does metANN, the "meteorological annual mean", i.e. the mean over the 4 seasons (Dec-Nov mean). For a description of how the seasonal and annual means are computed, read on..
