NCEP/EMC U.S. Gridded Gage Only Daily Precipitation (4 km) 2002-Oct 2006

This dataset contains the National Centers for Environmental Prediction (NCEP) Environmental Modeling Center (EMC) 4 KM GRIB gage-only analysis using 24h accumulated ("RFC") dataset. A prototype, real-time, hourly, multi-sensor National Preciptation Analysis (NPA) has been developed at 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. Hourly digital precipitation (HDP) radar estimates are created by the WSR-88D Radar Product Generator on a 131 X 131 4-km grid centered over each radar site. Data analysis routines, including a bias correction of the radar estimates using rain gage data, have been adapted by NCEP on a national 4-km grid from algorithms developed by OH and executed regionally at NWS River Forecast Centers (RFC). This dataset only contains the NCEP 4 KM GRIB Data gage-only analysis using 24h accumulated ("RFC") data. Other NCEP 4 KM GRIB Data including gage-only analysis, multi-sensor analysis (gage and unbiased radar), radar estimate (no bias removal) and radar estimate after bias removal are available as independent datasets. Depending on the time period selected, all five types may or may not be available. Please see GCIP/EOP: Surface NCEP Ancillary Catalogue of Available GCIP Precipitation Data (NCEP/EMC). The format of the files is GRIB. The files are compressed using the UNIX "compress" command and "uncompress" must be used before decoding. This dataset is provided as is and was not quality controlled by UCAR/JOSS. Beginning 1 Jan 2002, the analysis grid has been changed to conform with the official NWS HRAP grid. File names have also been changed. See the readme provided with this dataset for details.

To Access Resource:

Questions? Email Resource Support Contact:

  • EOL Data Support
    datahelp@eol.ucar.edu

Temporal Range

  • Begin:  2002-01-01T00:00:00Z
    End:  2006-10-03T12:00:00Z

Keywords

Resource Type dataset
Temporal Range Begin 2002-01-01T00:00:00Z
Temporal Range End 2006-10-03T12:00:00Z
Temporal Resolution N/A
Bounding Box North Lat 49.00000
Bounding Box South Lat 25.00000
Bounding Box West Long -125.00000
Bounding Box East Long -67.00000
Spatial Representation grid
Spatial Resolution N/A
Related Links

Documentation #1 : katz_stage4_readme.txt

21.081 : is a companion to dataset 21.091

21.009 : is a companion to dataset 21.091

21.095 : supersedes dataset 21.091

21.006 : is superseded by dataset 21.091
Additional Information N/A
Resource Format Unix Compressed (.Z) Gridded Binary (GRIB) Format (application/x-compress)
Standardized Resource Format GRIB
Asset Size 289 MB
Legal Constraints

none
Access Constraints none
Software Implementation Language N/A

Resource Support Name EOL Data Support
Resource Support Email datahelp@eol.ucar.edu
Resource Support Organization N/A
Distributor N/A
Metadata Contact Name EOL Data Support
Metadata Contact Email datahelp@eol.ucar.edu
Metadata Contact Organization N/A

Author Jun Du
Publisher N/A
Publication Date 2008-10-07T06:50:45
Digital Object Identifier (DOI) https://doi.org/10.26023/BBA9-16DF-JN01
Alternate Identifier 21.091
Resource Version 1.0
Topic Category climatologyMeteorologyAtmosphere
Progress completed
Metadata Date 2025-10-07T21:46:55Z
Metadata Record Identifier edu.ucar.eol::21.091
Metadata Language eng; USA
Suggested Citation Jun Du. (2008). NCEP/EMC U.S. Gridded Gage Only Daily Precipitation (4 km) 2002-Oct 2006. 1.0. https://doi.org/10.26023/BBA9-16DF-JN01. Accessed 03 November 2025.

Harvest Source