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Climate Prediction Center (CPC) NCEP-Global Forecast System (GFS) Precipitation Forecast Product


Identification Information:
(datsetid):gov.noaa.cpc:CPC-GFS-PREC-DLY-PF-V2009
Citation:
Citation Information:
Originator: Climate Prediction Center, National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce
Publication Date: 20090201
Title: Climate Prediction Center (CPC) NCEP-Global Forecast System (GFS) Precipitation Forecast Product
Geospatial Data Presentation Form: Raster digital data and Vector digital data
Publication Information:
Publication Place: Maryland
Publisher: Climate Prediction Center
Online Linkage: ftp://ftp.cpc.ncep.noaa.gov/GIS/gfs/
Description:
Abstract: The Global Forecast System (GFS) forecast precipitation data at 37.5km resolution is created at the NOAA Climate Prediction Center for the purpose of near real-time usage by the national and international relief agencies and the general public. The users of this data include the U.S. Geological Survey (USGS), the U.S. Agency for International Development (USAID), the Joint Agricultural Weather Facility (JAWF) and the national Meteorological Centers in Africa, Asia and South America. The data is disseminated in the binary format as well as in the form of shape and tiff files for use by the GIS community. This data has seven individual 24-hour accumulated precipitation amounts (in millimeters) corresponding to the seven forecast days and one for the grand total of accumulated 7day total precipitation (in millimeters). Thus, the represented forecast fields have 8 Geotiff files and 8 shape files. All these files are zipped into a single file (per day).
Purpose: To create and disseminate the real-time, high-resolution precipitation forecasts from the NCEP GFS model which will be very useful for the decision makers of the national and the international agencies including the above mentioned agencies, as well as the general public.
Supplemental Information: Due to the disk space limitations, only a short-term (latest 30-day period) archive is maintained. As for the spatial resolution, there are 961 points in the longitudinal direction and 481 points in the latitudinal direction. The points in both the longitudinal direction and the latitudinal direction are spaced 0.375 decimal degrees apart.
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 20100401
Ending Date: Present
Currentness Reference: ground condition
Status:
Progress: Complete
Maintenance and Update Frequency: Daily.
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -180.0
East Bounding Coordinate: 180.0
North Bounding Coordinate: 90.0
South Bounding Coordinate: -90.0
Keywords:
Theme:
Theme Keyword Thesaurus: ISO 19115 Topic Category
Theme Keyword: climatologyMeteorologyAtmosphere
Theme:
Theme Keyword Thesaurus: NASA GCMD Science Keywords
Theme Keyword: Atmosphere > Precipitation > Precipitation Amount
Place:
Place Keyword Thesaurus: NASA GCMD Location Keywords
Place Keyword: Geographic Region > Global
Stratum:
Stratum Keyword Thesaurus: NASA GCMD Location Keywords
Stratum Keyword: Vertical Location > Land Surface
Stratum Keyword: Vertical Location > Sea Surface
(thelayid):
(numthlay):2
(layrname):
Theme:
Theme Keyword Thesaurus: ISO 19115 Topic Category
Theme Keyword: climatologyMeteorologyAtmosphere
(layrname):
Theme:
Theme Keyword Thesaurus: NASA GCMD Science Keywords
Theme Keyword: Atmosphere > Precipitation > Precipitation Amount
Access Constraints: None
Use Constraints: Acknowledgment of the Data Originator when using the data item as a source.
Point of Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Climate Prediction Center, NOAA
Contact Position: Contract Scientist
Contact Address:
Address Type: mailing and physical
Address: 5830 University Research Court
City: College Park
State or Province: Maryland
Postal Code: 20740
Country: United States of America
Contact Voice Telephone: (301) 683-3462
Contact Electronic Mail Address: vadlamani.kumar@noaa.gov
Hours: 07:00 - 4:00 PM Eastern
Browse Graphic:
Browse Graphic File Name: http://www.cpc.ncep.noaa.gov/products/international/browse_graphics/gfs_37.5km_24h_fcst.png
Browse Graphic File Description: GFS 24 hour precipitation forecast
Browse Graphic File Type: PNG File
Data Set Credit: Wassila Thiaw, Eric Wolvovsky, Chalump Oonariya and Nicholas Novella
(progaff):
(progname):Climate Prediction Center
Data Quality Information:
Attribute Value Accuracy Information:
Attribute Accuracy Report: We do not perform any accuracy assessment on this product. For accuracy assessment about GFS product, please refer this link: http://www.hpc.ncep.noaa.gov/mdlbias/
Logical Consistency Report: The logical consistency aspects of the GFS data sets were planned and implemented by the NCEP/EMC and for more information please visit http://www.emc.ncep.noaa.gov/gmb/moorthi/gam.html and GFS verification on operational basis can be viewed at http://www.hpc.ncep.noaa.gov/html/model2.shtml.
Completeness Report: NA
Lineage:
Process Step:
Process Description: This product is generated through a two-step process. During the first step of the process all the inputs data from GFS forecasts are derived from the original spectral output data, which is called post-processing. During the second step the data is converted into ArcGIS compatible GIS format.
Process Date: 2009
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Climate Prediction Center
Contact Person: Vadlamani Kumar
Contact Position: Contract Scientist
Contact Address:
Address Type: physical
Address: 5380 University Research Court
City: College Park
State or Province: MD
Postal Code: 20740
Contact Voice Telephone: (301)683-3462
Contact TDD/TTY Telephone: (301)683-3462
Contact Facsimile Telephone: (301)683-1557
Contact Electronic Mail Address: vadlamani.kumar@noaa.gov
Hours: 9 AM to 4 PM
Contact Instructions: Call the office
Spatial Data Organization Information:
Direct Spatial Reference Method: Raster
Spatial Reference Information:
Horizontal Coordinate System Definition:
Geographic:
Latitude Resolution: 0.375
Longitude Resolution: 0.375
Geographic Coordinate Units: Decimal degrees
Entity and Attribute Information:
Overview Description:
Entity and Attribute Overview: The shape file in the present case is a polygon and represents the amount of precipitation with its units in millimeters on this polygon (contour). The number of polygons and the number of vertices of each polygon vary depending on the nature of the data and its resolution. Each polygon (contour) has a value associated with it, which is the precipitation amount in millimeters. For interpretation purpose, the amount of precipitation inside the polygon (contour) is greater than the value (precipitation amount) associated with the polygon while outside the polygon it is less than the value (amount of precipitation) associated with the polygon. Raster data (Geotiff)each pixel is the amount of precipitation in mm.
Entity and Attribute Detail Citation: NOAA's Climate Prediction Center
Distribution Information:
Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: NOAA's Climate Prediction Center
Contact Position: Contract Scientist
Contact Address:
Address Type: mailing and physical
Address: 5380 University Research Court
City: College Park
State or Province: Maryland
Postal Code: 20740
Country: United States of America
Contact Voice Telephone: (301) 683-3462
Contact Electronic Mail Address: vadlamani.kumar@noaa.gov
Resource Description: 001
Distribution Liability: Refer the NOAA National Weather Service disclaimerhttp://www.weather.gov/disclaimer.php
Standard Order Process:
Digital Form:
Digital Transfer Information:
Format Name: GIS Shape File
File Decompression Technique: unzip
Digital Transfer Option:
Online Option:
Computer Contact Information:
Network Address:
Network Resource Name: ftp://ftp.cpc.ncep.noaa.gov/GIS/gfs/
Fees: None
Metadata Reference Information:
Metadata Date: 20130522
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: NOAA's Climate Prediction Center
Contact Position: Scientific Data Specialist
Contact Address:
Address Type: mailing and physical
Address: 5380 University Research Court
City: College Park
State or Province: Maryland
Postal Code: 20740
Country: United States of America
Contact Voice Telephone: (301)683-3412
Contact Electronic Mail Address: sudhir.shrestha@noaa.gov
Metadata Standard Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Extensions:
Online Linkage: http://www.ncddc.noaa.gov/metadataresource/metadata-references/files/ncddcmdprofile_v2.pdf
Profile Name: Content Specification for Metadata in the National Coastal Data Development Center's Data Catalog Version 2.0
Metadata Extensions:
Online Linkage: http://www.fgdc.gov/standards/projects/FGDC-standards-projects/csdgm_rs_ex/MetadataRemoteSensingExtens.pdf
Profile Name: Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata, FGDC-STD-012-2002
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