Retrospective Analysis

     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, 1948-2005)(2006 version)
• South American daily precipitation analysis(realtime,January 1,2000-present)
• Retrospective South American daily precipitation analysis(1978-2004) (2006 version)

    ** 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.