Global Precipitation Climatology Project (GPCP) Version 2 Combined Precipitation Data Set
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.
DATA DESCRIPTION: GPCP home page: http://cics.umd.edu/GPCP/
FORMAT: NetCDF
GRID: Global - 2.5 x 2.5 degree grid - T63 (96 lat x 192 lon) Gaussian grid
LEVELS: 1
TIMES: 12 values per year
CURRENT HOLDINGS: Jan 1979 - Dec 2004
FIELDS:
| Description | Name | Units |
|---|---|---|
| Monthly satellite-guage precipitation | Prc | mm day-1 |
| Absolute error | Error | mm day-1 |
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 History:
- /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
- /CA/GPCP/MONTHLY/gpcp.psg.7904.nc : All monthly satellite-gauge Precipitation 1979-2004
- /CA/GPCP/MONTHLY/gpcp.esg.7904.nc : All monthly s-g precip absolute error 1979-2004
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.