NOAA merged land air and sea surface temperature dataset
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
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 |  |
| Air Temperature | Anomaly ("Unadjusted") | Surface | air.mon.anom.nc | |
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:
- Please note: If you acquire NOAA Merged Air Land and SST Anomalies data products from PSD, we ask that you acknowledge us in your use of the data. This may be done by including text such as NOAA Merged Air Land and SST Anomalies data provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA, from their Web site at http://www.cdc.noaa.gov/ in any documents or publications using these data. We would also appreciate receiving a copy of the relevant publications. This will help PSD to justify keeping the NOAA Merged Air Land and SST Anomalies data set freely available online in the future. Thank you!
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:
- Physical Sciences Division: Data Management
NOAA/ESRL/PSD
325 Broadway
Boulder, CO 80305-3328
esrl.psd.data@noaa.gov