NCEP/CPC Four Kilometer Precipitation Set, Gauge and Radar

A prototype, real-time, hourly, multi-sensor National Precipitation Analysis has been developed at the National Centers for Environmental Prediction (NCEP) in cooperation with the Office of Hydrology (OH). This analysis merges two data sources that are currently being collected in real-time by OH and NCEP. Approximately 3000 automated, hourly rain gauge observations are available over the contiguous 48 states via the GOES Data Collection Platform, and ASOS. In addition, hourly digital precipitation (HDP) radar estimates are obtained as compressed digital files via the AWIPS network. The HDP estimates are created by the WSR-88D Radar Product Generator on a 131 by 131 4 km grid centered over each radar site. The data analysis routines, including a bias correction of the radar estimates using the gage data, have been adapted by NCEP on a national 4 km grid from algorithms developed by OH ("Stage II") and executed regionally at NWS River Forecast Centers.

Since January 1, 2002, the Stage IV analysis data became available and are added to the archive. This precipitation data are received through UCAR/EOL.

To Access Resource:

Questions? Email Resource Support Contact:

  • Chi-Fan Shih
    chifan@ucar.edu
    UCAR/NCAR - Research Data Archive

Temporal Range

  • Begin:  1995-01
    End:  2025-03

Keywords

Resource Type dataset
Temporal Range Begin 1995-01
Temporal Range End 2025-03
Temporal Resolution N/A
Bounding Box North Lat 58.4168
Bounding Box South Lat 20.1802
Bounding Box West Long -136.6981
Bounding Box East Long -59.3185
Spatial Representation grid
Spatial Resolution N/A
Related Links

Related Resource #1 : NCEP's national multi-sensor hourly precipitation analysis

Related Resource #2 : EOL codiac dataset: GCIP/EOP Surface: Precipitation NCEP/EMC 4KM Gridded Data (GRIB) Stage IV Data
Additional Information N/A
Resource Format WMO_GRIB1 (Binary)
Standardized Resource Format GRIB
Asset Size 144288 MB
Legal Constraints

Creative Commons Attribution 4.0 International License
Access Constraints None
Software Implementation Language N/A

Resource Support Name Chi-Fan Shih
Resource Support Email chifan@ucar.edu
Resource Support Organization UCAR/NCAR - Research Data Archive
Distributor NCAR Research Data Archive
Metadata Contact Name N/A
Metadata Contact Email rdahelp@ucar.edu
Metadata Contact Organization NCAR Research Data Archive

Author Cooperative Distributed Interactive Atmospheric Catalog System, Earth Observing Laboratory, National Center for Atmospheric Research, University Corporation for Atmospheric Research
Climate Prediction Center, National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce
Publisher Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory
Publication Date 2000-11-15
Digital Object Identifier (DOI) https://doi.org/10.5065/D69Z93M3
Alternate Identifier d507005
Resource Version N/A
Topic Category climatologyMeteorologyAtmosphere
Progress onGoing
Metadata Date 2025-04-17T01:05:02Z
Metadata Record Identifier edu.ucar.rda::d507005
Metadata Language eng; USA
Suggested Citation Cooperative Distributed Interactive Atmospheric Catalog System, Earth Observing Laboratory, National Center for Atmospheric Research, University Corporation for Atmospheric Research, Climate Prediction Center, National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce. (2000). NCEP/CPC Four Kilometer Precipitation Set, Gauge and Radar. Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory. https://doi.org/10.5065/D69Z93M3. Accessed 01 May 2025.

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