GHCN_CAMS Gridded 2m Temperature (Land)

Note: CPC has updated their version of the dataset, including eliminating Antarctica temperature. Our version has been updated. Please redownload the file if you have acquired it before Oct 14, 2015.

Brief Description:

GHCN CAMS is a high resolution (0.5x0.5) analyzed global land surface temperatures from 1948 to near present.

Temporal Coverage:

Monthly means from 1948 to Nov 2016 .
Long term monthly means using 1981-2010.

Spatial Coverage:

0.5 degree latitude x 0.5 degree longitude global grid (360x720).
89.75S - 89.75N, 0.25E - 359.75E.

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
Temperature	Mean	Surface	air.mon.mean.nc
Temperature	Long Term Mean	Surface	air.mon.1981-2010.ltm.nc

Usage Restrictions:

None.

Detailed Description:

See the NCDC's GHCN_CAMS ftp page. According to the journal article on the dataset: A global monthly land surface temperature analysis for 1948-present.
"This data set is different from some existing surface airtemperature data sets in: (1) using a combination of two large individual data sets of station observations collected from the Global Historical Climatology Network version 2 and the Climate Anomaly Monitoring System (GHCN + CAMS), so it can be regularly updated in near real time with plenty of stations and (2) some unique interpolation methods, such as the anomaly interpolation approach with spatially-temporally varying temperature lapse rates derived from the observation-based Reanalysis for topographic adjustment.".

Also see the webpage http://www.cpc.ncep.noaa.gov/cgi-bin/gl_Temperature-Monthly.sh for plots (total, monthly, percentile) and links to related datasets.
Related Datasets at PSD
- U Delaware (air temperature).

Caveats:

None.

Related File Naming & Structure Information:

File Names: (get via ftp at ftp.cdc.noaa.gov)

air.mon.mean.nc (In directory: /Datasets/ghcncams/)
air.mon.1981-2010.ltm.nc (In directory: /Datasets/ghcncams/Derived)

Dataset Format and Size:

PSD standard NetCDF: ~403 Mbyte file size.
PSD standard NetCDF: 187 Mbyte file size LTM.

Missing Data:

-9.96921e+36f

Citation:

Please note: If you acquire GHCN Gridded V2 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 GHCN Gridded V2 data provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA, from their Web site at http://www.esrl.noaa.gov/psd/ 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 GHCN Gridded V2 data set freely available online in the future. Thank you!
Fan, Y., and H. van den Dool (2008), A global monthly land surface air temperature analysis for 1948-present, J. Geophys. Res., 113, D01103, doi:10.1029/2007JD008470.

Contact:

Physical Sciences Division: Data Management
NOAA/ESRL/PSD
325 Broadway
Boulder, CO 80305-3328
esrl.psd.data@noaa.gov