Intercomparison of Global Precipitation Products: The Third Precipitation Intercomparison Project (PIP-3)

Robert F. Adler
Search for other papers by Robert F. Adler in
Current site
Google Scholar
PubMed
Close
,
Christopher Kidd
Search for other papers by Christopher Kidd in
Current site
Google Scholar
PubMed
Close
,
Grant Petty
Search for other papers by Grant Petty in
Current site
Google Scholar
PubMed
Close
,
Mark Morissey
Search for other papers by Mark Morissey in
Current site
Google Scholar
PubMed
Close
, and
H. Michael Goodman
Search for other papers by H. Michael Goodman in
Current site
Google Scholar
PubMed
Close
Full access

A set of global, monthly rainfall products has been intercompared to understand the quality and utility of the estimates. The products include 25 observational (satellite based), four model, and two climatological products. The results of the intercomparison indicate a very large range (factor of 2 or 3) of values when all products are considered. The range of values is reduced considerably when the set of observational products is limited to those considered quasi-standard. The model products do significantly poorer in the Tropics, but are competitive with satellite-based fields in midlatitudes over land. Over ocean, products are compared to frequency of precipitation from ship observations. The evaluation of the observational products points to merged data products (including rain gauge information) as providing the overall best results.

*Laboratory for Atmospheres, NASA Goddard Space Flight Center, Greenbelt, Maryland.

+Department of Geography, University of Birmingham, Birmingham, United Kingdom.

#Department of Meteorology, University of Wisconsin—Madison, Madison, Wisconsin.

@College of Geosciences, University of Oklahoma, Norman, Oklahoma.

&Global Hydrology and Climate Center, NASA Marshall Space Flight Center, Huntsville, Alabama.

Corresponding author address: Robert F. Adler, Laboratory for Atmospheres, Mail Code 912, NASA Goddard Space Flight Center, Greenbelt, MD 20771. E-mail: Robert.Adler@gsfc.nasa.gov

A set of global, monthly rainfall products has been intercompared to understand the quality and utility of the estimates. The products include 25 observational (satellite based), four model, and two climatological products. The results of the intercomparison indicate a very large range (factor of 2 or 3) of values when all products are considered. The range of values is reduced considerably when the set of observational products is limited to those considered quasi-standard. The model products do significantly poorer in the Tropics, but are competitive with satellite-based fields in midlatitudes over land. Over ocean, products are compared to frequency of precipitation from ship observations. The evaluation of the observational products points to merged data products (including rain gauge information) as providing the overall best results.

*Laboratory for Atmospheres, NASA Goddard Space Flight Center, Greenbelt, Maryland.

+Department of Geography, University of Birmingham, Birmingham, United Kingdom.

#Department of Meteorology, University of Wisconsin—Madison, Madison, Wisconsin.

@College of Geosciences, University of Oklahoma, Norman, Oklahoma.

&Global Hydrology and Climate Center, NASA Marshall Space Flight Center, Huntsville, Alabama.

Corresponding author address: Robert F. Adler, Laboratory for Atmospheres, Mail Code 912, NASA Goddard Space Flight Center, Greenbelt, MD 20771. E-mail: Robert.Adler@gsfc.nasa.gov
Save