edu.ucar.gdex::d728002 eng; USA utf-8 dataset NSF NCAR Geoscience Data Exchange datahelp@ucar.edu https://gdex.ucar.edu NSF NCAR Geoscience Data Exchange The Geoscience Data Exchange (GDEX), managed by the Computational and Information Systems Laboratory (CISL) at NSF NCAR, contains a large collection of meteorological, atmospheric composition, and oceanographic observations, and operational and reanalysis model outputs, integrated with NSF NCAR High Performance Compute services to support atmospheric and geosciences research. download pointOfContact 2026-04-18T04:33:00Z ISO 19115 Geographic Information - Metadata ISO19115:2003/Cor 1 2006 https://doi.org/10.5065/D6R78C9S https://www.ncei.noaa.gov/products/global-precipitation-climatology-project https Related Resource #1 NOAA Climate Data Record - GPCP Monthly Precipitation GPCP Version 2.2 Combined Precipitation Data Set d728002 2015-12-02 publication Huffman, George J. author Bolvin, David T. author Nelkin, Eric J. author Adler, Robert F. author NSF National Center for Atmospheric Research publisher NOTE: This dataset has been superseded by GPCP Version 2.3, which is available in RDA dataset ds728.6 [https://rda.ucar.edu/datasets/ds728.6/]. Users are advised to transition to this updated dataset. This dataset contains Version 2.2 of the Global Precipitation Climatology Project (GPCP) combined satellite-gauge precipitation estimate and combined satellite-gauge error estimate. The data are monthly analyses defined on a global 2.5 degree by 2.5 degree longitude/latitude grid and cover the period January 1979 to (delayed) present. A monthly climatology (1979-2011) is also available. Please note that the original binary data were written using the big endian representation of unformatted binary words. Users reading this data on little endian platforms, therefore, will need to byte swap the data. The GPCP was established by the World Climate Research Program (WCRP) and subsequently attached to the Global Energy and Water Exchange program (GEWEX) to address the problem of quantifying the distribution of precipitation around the globe over many years. The general approach is to combine the precipitation information available from each of several sources into a final merged product, taking advantage of the strengths of each data type. The passive microwave estimates are based on Special Sensor Microwave/Imager (SSM/I) and Special Sensor Microwave Imager/Sounder (SSMIS) data from the series of Defense Meteorological Satellite Program (DMSP, United States) satellites that fly in sun-synchronous low-earth orbits at 6am / 6pm. The infrared precipitation estimates are computed primarily from geostationary satellites (United States, Europe, Japan), and secondarily from NOAA series polar-orbiting satellites (United States). Additional low-Earth orbit estimates include Atmospheric Infrared Sounder (AIRS) data from the NASA Aqua, and Television Infrared Observation Satellite Program (TIROS) Operational Vertical Sounder (TOVS) and Outgoing Longwave Radiation Precipitation Index (OPI) data from the NOAA series satellites. The precipitation gauge data are assembled and analyzed by the Global Precipitation Climatology Centre (GPCC) of the Deutscher Wetterdienst. The Version 2.2 Data Set contains data from the following contributing centers: * GPCP Polar Satellite Precipitation Data Centre - Emission (SSM/I and SSMIS emission estimates) * GPCP Polar Satellite Precipitation Data Centre - Scattering (SSM/I and SSMIS scattering estimates) * GPCP Geostationary Satellite Precipitation Data Centre (GPI and OPI estimates) * NASA/GSFC Sounder Research Team (TOVS and AIRS estimates) * GPCP Global Precipitation Climatology Centre (precipitation gauge analyses) Request to users from the data authors: The GPCP datasets are developed and maintained with international cooperation and are used by the worldwide scientific community. To better understand the evolving requirements across the GPCP user community and to increase the utility of the GPCP product suite, the dataset authors request that a citation be provided for each publication that uses the GPCP products. Please email the citation to george.j.huffman@nasa.gov or david.t.bolvin@nasa.gov. Your help and cooperation will provide valuable information for making future enhancements to the GPCP product suite. onGoing datahelp@ucar.edu pointOfContact irregular dataset https://gdex.ucar.edu/images/ds_logos/default_200_200.png Logo thumbnail from URL png NASA GSFC GPCP NetCDF Binary dataset Resource Type 2021-03-30 revision 4.4 DataCite Metadata Working Group orginator resourceTypeGeneral Aqua > Earth Observing System, Aqua DMSP > Defense Meteorological Satellite Program GMS > Japan Geostationary Meteorological Satellite GOES > NOAA Geostationary Operational Environmental Satellites METEOSAT > Meteosat Operational Programme NOAA POES > NOAA Polar Orbiting Environmental Satellites TIROS > Television Infrared Observation Satellite U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-04-15 revision 23.7 NASA Global Change Master Directory orginator Valids List: Platforms AIRS > Atmospheric Infrared Sounder AVHRR > Advanced Very High Resolution Radiometer SSM/I > Special Sensor Microwave/Imager SSMIS > Special Sensor Microwave Imager/Sounder TOVS > TIROS Operational Vertical Sounder U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-04-15 revision 23.7 NASA Global Change Master Directory orginator Valids List: Instruments GPCC > Global Precipitation Climatology Centre GPCP > Global Precipitation Climatology Project U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-04-15 revision 23.7 NASA Global Change Master Directory orginator Valids List: Projects EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > PRECIPITATION RATE U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-04-15 revision 23.7 NASA Global Change Master Directory orginator Valids List: Science and Services Keywords Creative Commons Attribution 4.0 International License None eng utf-8 climatologyMeteorologyAtmosphere 1979-01-01T0000+00 2015-11-01T0000+00 NSF NCAR Geoscience Data Exchange datahelp@ucar.edu https://gdex.ucar.edu distributor 0 https://gdex.ucar.edu/datasets/d728002/ https Dataset Description Related Link information https://gdex.ucar.edu/datasets/d728002/dataaccess/ https Data Access Related Link download none asNeeded