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GISS Surface Temperature Analysis

The 1x1 version of the dataset has been discontinued. It has been replaced by a 2x2 version. This is at the suggestion of the NASA who said a 1x1 version of the smoothed data is not warranted

One-Line Description:

  • Goddard Institute for Space Studies (GISS) surface temperature analysis for the globe.

Temporal Coverage:

  • Monthly anomalies 1880/01 to present.

Spatial Coverage:

  • 2.0 degree latitude x 2.0 degree longitude global grid (360x180).
  • 89.0N - 80.0S, 1.0E - 359.5E.

Levels:

  • N/A

Update Schedule:

  • Monthly

Download/Plot Data:

Archive parameters:

Variable Statistic Level Download File Create Plot/Subset
Air Temperature Monthly Anomaly: 250km smoothed Surface air.2x2.mon.anom.land.nc plot
Air Temperature Monthly Anomaly: 1200km smoothed Surface air.2x2.mon.anom.land.nc plot
Combined SST/Air Temperature Monthly Anomaly: 250km smoothed Surface air.2x2.mon.anom.comb.nc plot
Combined SST/Air Temperature Monthly Anomaly: 1200km smoothed Surface air.2x2.mon.anom.comb.nc plot

Usage Restrictions:

  • None

Detailed Description:

  • From the NASA webpage: "The NASA GISS Surface Temperature Analysis (GISTEMP) provides a measure of the changing global surface temperature with monthly resolution for the period since 1880, when a reasonably global distribution of meteorological stations was established. Input data for the analysis, collected by many national meteorological services around the world, is the unadjusted data of the Global Historical Climatology Network (Peterson and Vose, 1997) except that the USHCN station records included were replaced by a later corrected version. These data were augmented by SCAR data from Antarctic stations. Documentation of our analysis is provided by Hansen et al. (1999), with several modifications described by Hansen et al. (2001). The GISS analysis is updated monthly.".

     

    The data is available on an equal area grid. NASA provides code to read it onto a 2x2 grid. They have two smoothing levels available for their updated data: 250km and 1200km smoothing. They make available a land only version and a version which includes the hadISST (post Dec 1981) and NOAA OI V2 for data over the oceans. There ARE missing data values.

Caveats:

  • None

Related File Naming & Structure Information:

File Names:

  • var.time.stat.nc   (In directory: /Datasets/gistemp/)

Dataset Format and Size:

  • 4 PSD standard NetCDF ~100 Mbyte file for each monthly file (packed).

Missing Data:

  • Missing data is flagged with a value of 9999f

Citation:

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References:

Original Source:

Contact:

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