Climate Prediction Center (CPC) Global Land Surface Air Temperature Analysis

Metadata Updated: September 1, 2016

A station observation-based global land monthly mean surface air temperature dataset at 0.5 x 0.5 latitude-longitude resolution for the period from 1948 to the present was developed at the Climate Prediction Center, National Centers for Environmental Prediction. This data set is different from some existing surface air temperature 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. When compared with several existing observation-based land surface air temperature data sets, the preliminary results show that the quality of this new GHCN + CAMS land surface air temperature analysis is reasonably good and the new data set can capture most common temporal-spatial features in the observed climatology and anomaly fields over both regional and global domains. The study also reveals that there are clear biases between the observed surface air temperature and the existing Reanalysis data sets, and they vary in space and seasons. Therefore the Reanalysis 2 m temperature data sets may not be suitable for model forcing and validation. The GHCN + CAMS data set will be mainly used as one of land surface meteorological forcing inputs to derive other land surface variables, such as soil moisture, evaporation, surface runoff, snow accumulation and snow melt, etc. As a byproduct, this monthly mean surface air temperature data set can also be applied to monitor surface air temperature variations over global land routinely or to verify the performance of model simulation and prediction. Refer to this paper: Fan, Y. and H. van den Dool, 2008: A global monthly land surface air temperature analysis for 1948-present. J. Geophys. Res., 113, doi: 10.1029/2007JD008470.

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Dates

Metadata Date October 11, 2012
Metadata Created Date September 26, 2015
Metadata Updated Date September 1, 2016
Reference Date(s) January 1, 2004 (publication)
Frequency Of Update monthly

Metadata Source

Harvested from NOAA CSW Harvest Source

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Monthly mean GHCN+CAMS global gridded 2m surface air temperature in degrees C.

Additional Metadata

Resource Type Dataset
Metadata Date October 11, 2012
Metadata Created Date September 26, 2015
Metadata Updated Date September 1, 2016
Reference Date(s) January 1, 2004 (publication)
Responsible Party Climate Prediction Center, NOAA (Point of Contact)
Contact Email
Access Constraints Access Constraints: None Use Constraints: Acknowledgment of the Data Originator when using the data item as a source. Distribution Liability: Refer the NOAA National Weather Service disclaimer http://www.weather.gov/disclaimer.php
Bbox East Long 179.75
Bbox North Lat 89.75
Bbox South Lat -89.75
Bbox West Long -179.75
Coupled Resource
Frequency Of Update monthly
Graphic Preview Description Monthly mean GHCN+CAMS global gridded 2m surface air temperature in degrees C.
Graphic Preview File http://www.cpc.ncep.noaa.gov/products/Soilmst_Monitoring/Figures/global/curr.t.full.gif
Graphic Preview Type GIF
Guid gov.noaa.cpc:CPC-TEMP-MLY-GLSAT-v2004
Harvest Object Id 64cab7d7-3987-4db4-ada0-3b812ff64cd9
Harvest Source Id 2aed8e29-fc5b-4cde-aa66-fb1118fd705e
Harvest Source Title NOAA CSW Harvest Source
Licence
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 1948-01-01
Temporal Extent End 2014-08-25T10:50:19.03-04:00

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