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GPCC Rain Gauge Analysis for GPCP

Online Access for GPCC Rain Gauge Analysis for GPCP

1986  1987  1988  1989  1990  1991  1992  1993  1994  1995  1996


Original Archive
Future Updates
Data Set Description
Data Characteristics
Data Format
Data Access
Anonymous FTP
Points of Contact


This README file contains information on the structure of a global data set of area-averaged and time-integrated precipitation fields, based on analysis of all surface rain gauge measurements.These measurements, from approximately 6,700 stations world-wide, are interpolated using the Spheremap code (Shepard, 1968; Willmott et al., 1985) to provide global surface monthly mean rainfall estimates on a 2.5 degree latitude by 2.5 degree longitude grid for the period 1986 to 1996.

This data set was produced at the Global Precipitation Climatology Center (GPCC) for the Global Precipitation Climatology Project (GPCP), initiated under the World Climate Research Program.The GPCC, operated by the Deutscher Wetterdienst (National Meteorological Service of Germany), is a central element of the GPCP.The main purpose of the GPCP (for details, see WMO, 1985; WMO/ICSU, 1990) is to evaluate and provide global gridded data sets of monthly precipitation, based on all suitable observation techniques, to be used for:

  • verification of climate model simulations
  • investigations of the global hydrological cycle
  • climate change detection studies


The distribution of this data set is being funded by NASA's Mission To Planet Earth program.The data are not copyrighted; however, we request that when you publish data or results using these data, please acknowledge as follows: The authors wish to thank the Distributed Active Archive Center (Code 610.2) at the Goddard Space Flight Center, Greenbelt, MD, 20771, for distributing the data; and the science investigator, Dr. Bruno Rudolf at the GPCC, Deutscher Wetterdienst, Germany, for producing these data products.Goddard's contribution to these activities was sponsored by NASA's Mission to Planet Earth program.

Original Archive

This data set was originally archived at the Marshall Space Flight Center.It was moved to the Goddard Space Flight Center Distributed Active Archive Center (GSFC DAAC) in the fall of 1996.This data set is also accessible from the GPCP archives at the World Data Center A (WDC-A) for Meteorology at theNational ClimateData Center (NCDC) in Asheville, North Carolina.

Future Updates

The Goddard DAAC will update this data set as new data are processed and made available by the data producers.

Data Set Description

The GPCP/GPCC land surface precipitation data set is derived from the monthly precipitation totals based on conventional surface rain gauge measurements.The GPCC collects monthly precipitation totals received from CLIMAT and SYNOP reports via the World Weather Watch GTS (Global Telecommunication System) of the World Meteorological Organization (WMO).The GPCC also acquires monthly precipitation data from international/national meteorological and hydrological services/institutions.An interim data base of about 6,700 meteorological stations is defined.Surface rain gauge-based monthly precipitation data from these stations are analyzed over land areas, and an interpolated gridded data set is created (Rudolf, 1993; Rudolf, 1996; Rudolf et al., 1994) using a spatial objective analysis, the Spheremap code (Shepard, 1968; Willmott et al., 1985).The interpolation for Antarctica is made separately from that for the other continents to avoid any influence of distant stations.

Data Characteristics  

The producer of this data set can be contacted as follows:


Data Producers:
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Last updated: Sep 18, 2009 10:32 AM ET