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In support of climate monitoring, climate prediction and applied
research, the Climate Prediction Center has developed several retrospective analyses at daily time scales:
- U.S. hourly precipitation (HPD) analysis (1948-September, 2002)
- U.S. daily precipitation analysis(realtime,January,1996-present)
- U.S. Unified Daily Precipitation Analysis(retrospective,1948-2002)
- US_Mexico daily precipitation analysis(retrospective, 1948-2005)
- Brazil daily precipitation analysis(retrospective, 1948-July 2005)(2005 version)
- South American daily precipitation analysis(realtime,January 1,2000-present)
- Retrospective South American daily precipitation analysis(1978-2004)
These datasets, except for the Unified Daily Precipitation Analysis, are available via anonymous ftp
at the following site:
ftp ftp.cpc.ncep.noaa.gov
login: anonymous
passwd: your e-mail address
for U.S. hourly precipitation analysis go to precip/wd52ws/hpd
for realtime U.S. daily precipitation analysis go to precip/wd52ws/us_daily
for retrospective US_Mexico daily precipitation analysis go to precip/wd52ws/us-mex
for retrospective Brazil daily precipitation analysis go to precip/wd52ws/brazil
for realtime South American daily precipitation analysis go to precip/wd52ws/SA
for retrospective South American daily precipitation analysis go to precip/wd52ws/SA/historical
The Unified Daily Precipitation Analysis over the U.S. is available. However, the size
of the dataset is prohibitive. While CPC cannot assume the responsibility of servicing the data needs of the climate community, we
have made arrangements with several established data distribution centers. CDC has transferred the dataset to NetCDF format and
is currently hosting it on their web site (http://www.cdc.noaa.gov/cdc/data.unified.html).
UCAR JOSS is hosting the dataset under the CODIAC system
(http://www.joss.ucar.edu/codiac).
CPC has also contacted NCDC about hosting the dataset.
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www.nws.noaa.gov 
