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NOAA merged land air and sea surface temperature dataset

 

Go To: Temporal Coverage | Spatial Coverage | Levels | Update Schedule | Download/Plot Data | Restrictions | Details | Caveats | File Naming | Citation | References | Original Source | Contact

One-Line Description:

  • NOAA merged land air and sea surface temperature dataset

Temporal Coverage:

  • Monthly anomalies and statistics from 1880/01 to present

Spatial Coverage:

  • 5.0 degree latitude x 5.0 degree longitude global grid (72x36).
  • 87.5S - 87.5N, -177.5E - 177.5E.5E.

Levels:

  • Surface

Update Schedule:

  • Monthly (adjusted)
  • Static (unadjusted)

Download/Plot Data:

Archive parameters: File names are composed of variable abbreviations and statistic name:

(variable).(time).(statistic).nc
Variable Statistic Level Download File Create Plot/Subset
Air Temperature Anomaly Surface air.mon.anom.nc plot
Air Temperature Anomaly ("Unadjusted") Surface air.mon.anom.nc plot

Usage Restrictions:

  • None

Detailed Description:

  • The merged land air and sea surface temperature anomaly analysis is based on data from the Global Historical Climatology Network (GHCN) of land temperatures and the International Comprehensive Ocean-Atmosphere Data Set (ICOADS) of Sea Surface Temperature (SST) data. Temperature anomalies with respect to 1961-1990 are analyzed separately. The analyzed monthly temperature anomalies are then merged to form the global analysis. More dataset information can be found at NCDC's Global Surface Temperature Anomaly webpage. This is the dataset NOAA uses for global temperature monitoring.

     

    We archive two versions of the data. The first is the "unadjusted" data set which is from Smith and Reynolds, 2005. This version ends in Mar 2006 and is provided for research continuity.
    The primary version is updated through the present. In it, Smith and Reynolds have adjusted the land component of the merged temperature to make it more consistent with the GHCN temperature. In 5-degree regions with no GHCN value available there is no adjustment. In other regions the strength of the adjustment towards the GHCN temperature is a function of the number of individual stations used to produce the GHCN. With one station in the 5-degree region the adjustment is to about 60% of the GHCN value, while for three or more stations the adjustment is an almost complete replacement with the GHCN value.
  • Related Datasets

Caveats:

  • None

Related File Naming & Structure Information:

File Names:

  • var.time.stat.nc   (In directory: /Datasets/noaamergedtemp/ and ./unadj/)

Dataset Format and Size:

  • PSD standard NetCDF ~16 Mbyte file for each monthly file.

Missing Data:

  • -9.96921e+36f.

Citation:

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References:

  • New surface temperature analyses for climate monitoring Thomas M. Smith, Thomas C. Peterson, Jay H. Lawrimore, and Richard W. Reynolds National Climatic Data Center/National Environmental Satellite Data and Information Service/NOAA, Earth System Science Interdisciplinary Center, University of Maryland, College Park, Maryland, USA GEOPHYSICAL RESEARCH LETTERS, VOL. 32, L14712, doi:10.1029/2005GL023402, 2005
  • Smith, T.M., and R.W.Reynolds, 2005: A global merged land air and sea surface temperature reconstruction based on historical observations (1880-1997) (J.Climate, 18, 2021-2036.)

Original Source:

Contact:

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