Global Precipitation Climatology Project (GPCP) Version 2 Combined Precipitation Data Set

As of April 2006 this page/data has been updated through 2004.

SOURCE: 
G.J. Huffman, D.T. Bolvin, and R.F. Adler,
working in the Laboratory for Atmospheres, NASA Goddard Space Flight
Center, Code 912, Greenbelt, Maryland, 20771 USA, as the GPCP Merge
Development Centre.

GPCP home page:  http://cics.umd.edu/GPCP/

old GPCP home page: http://orbit-net.nesdis.noaa.gov/arad/gpcp/

FORMAT: NetCDF

GRID:   Global - 2.5 x 2.5 degree grid
               - T63 (96 lat x 192 lon) Gaussian grid

LEVELS: 1

FIELDS: Description                               Name    Units  
        ---------------------------------------------------------------
	monthly satellite-gauge Precipitation    Prc 	 mm/day    	
        monthly s-g precip absolute error        Error   mm/day    

TIMES:  12 values per year 

Current holdings: January 1979 - Dec 2004 


MSS Directory: /CA/GPCP/MONTHLY


Filenames: GPCP_PSG_25dg_yyyy.nc   (2.5 x 2.5 degree grid)
           GPCP_ESG_25dg_yyyy.nc  (2.5 x 2.5 degree grid)
           GPCP_PSG_T63_yyyy.nc  (T63 grid)
           GPCP_ESG_T63_yyyy.nc  (T63 grid)
    where "yyyy" is the 4-digit year, PSG is  satellite-gauge precipitation, 
    and ESG is error of satellite-gauge precipitation.

Update:
/CA/GPCP/MONTHLY/gpcp.psg.7903.nc : 
	All monthly satellite-gauge Precipitation 1979-2003

/CA/GPCP/MONTHLY/gpcp.esg.7903.nc : 
	All monthly s-g precip absolute error 1979-2003

REFERENCES:

Adler, Robert F., George J. Huffman, David T. Bolvin, Scott Curtis, 
Eric J. Nelkin, 2000: Tropical Rainfall Distributions Determined
Using TRMM Combined with Other Satellite and Rain Gauge Information. 
Journal of Applied Meteorology: Vol. 39, No. 12, pp.
2007-2023.


Huffman, George J., Robert F. Adler, Mark M. Morrissey, David T. Bolvin, 
Scott Curtis, Robert Joyce, Brad McGavock, Joel Susskind,
2001: Global Precipitation at One-Degree Daily Resolution from 
Multisatellite Observations. Journal of Hydrometeorology: Vol.
2, No. 1, pp. 36-50.


Huffman, G.J., 1997:  Estimates of root-mean-square random error
contained in finite sets of estimated precipitation.  J. Appl.
Meteor., 36, 1191-1201.

Huffman, George J., Robert F. Adler, Philip Arkin, Alfred Chang, Ralph Ferraro,
Arnold Gruber, John Janowiak, Alan McNab, Bruno
Rudolf, Udo Schneider, 1997: The Global Precipitation Climatology 
Project (GPCP) Combined Precipitation Dataset. Bulletin of
the American Meteorological Society: Vol. 78, No. 1, pp. 5-20.


Acknowledgements:The data set source should be acknowledged when the data are used.
   [One possible wording is: "The GPCP combined precipitation data were
   provided by the NASA/Goddard Space Flight Center's Laboratory for
   Atmospheres, which develops and computes the dataset as a
   contribution to the GEWEX Global Precipitation Climatology Project."]

The dataset creators further recommend "New users should obtain their own current, 
   clean copy, rather than taking a version from a third party that might be damaged 
   or out of date.  Current users should check for updates and new versions to
   avoid reliance on out-of-date data."  To do so, see the home page, under SOURCE, above.
 

 

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