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NCEP/EMC 4KM Gridded Data (GRIB) Radar Est. w/bias removal UBR -2001

Summary

This dataset contains the National Centers for Environmental Prediction (NCEP) Environmental Modeling Center (EMC) 4 KM GRIB radar estimate after bias removal ("UBR") data. 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 hourly, 6-hourly, and daily radar estimate after bias removal. 6-hourly data are generally available at 00Z, 06Z, 12Z, and 18Z. Daily data are generally available at 12Z. Depending on the time period selected, all three datasets may or may not be available. Other NCEP 4 KM GRIB Data including gage-only analysis, multi-sensor analysis (gage and unbiased radar), radar estimate (no bias removal), and gage-only analysis using 24h accumulated ("RFC") data 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.

Archive note

31 August 2020: Start and end dates/times on the files were updated.  

15 January 2021: Files missing from September 2000 were added.

Data access

  • ORDER data for delivery by FTP

Additional information

Identifier
Data Quality final
Versions
  • 1.0 (2006-06-12)
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Related projects
Spatial Type point
Frequency hourly
Language English
Categories
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Instruments
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Documentation
Related links

Temporal coverage

Begin datetime 1997-04-23 00:00:00
End datetime 2001-12-31 23:59:59

Spatial coverage


Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 49.00, Minimum (South) Latitude: 25.00
Minimum (West) Longitude: -125.00, Maximum (East) Longitude: -67.00

Primary point of contact information

Jun Du <jun.du@noaa.gov>

Additional contact information

Citation

Example citation following ESIP guidelines:

Du, J. 2006. NCEP/EMC 4KM Gridded Data (GRIB) Radar Est. w/bias removal UBR -2001. Version 1.0. UCAR/NCAR - Earth Observing Laboratory. https://doi.org/10.26023/SQ1C-NSRF-7K09. Accessed 28 May 2022.

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Ancillary information

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