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Gridded Model Output Statistics (MOS)

Initial CONUS Implementation August 15, 2006

Initial Alaska Implementation April 9, 2008

Initial Hawaii Implementation November 9, 2010

Experimental 2.5 km CONUS Implementation February 27, 2012


Gridded MOS Graphics and Data

  • Experimental 2.5-km CONUS MOS graphics and Data - National Digital Guidance Database (NDGD)
  • 5-km CONUS MOS graphics - National Digital Guidance Database (NDGD)
  • Alaska MOS graphics - National Digital Guidance Database (NDGD)
  • Hawaii MOS graphics - National Digital Guidance Database (NDGD)
  • ftp site for gridded MOS 5 km CONUS GRIB2 binary files
  • ftp site for gridded MOS 2.5 km CONUS GRIB2 binary files
  • ftp site for gridded MOS Alaska GRIB2 binary files
  • ftp site for gridded MOS Hawaii GRIB2 binary files
  • Degrib - NDFD/NDGD GRIB2 Decoder
  • Gridded MOS Implementation Details

  • Binary Scaling in GRIB2 encoding of 2.5-km CONUS Gridded MOS - April 2011
  • Stations used in analysis ordered by WFO
  • Log of Changes to Gridded MOS
  • Gridded MOS Technical Specifications

  • WMO Communication Headers for 3-km Alaska GMOS (pdf format) - Updated 12/19/2013
  • WMO Communication Headers for 2.5-km CONUS GMOS (pdf format) - Updated 12/19/2013
  • Description of gridded MOS GRIB2 ftp file structure (pdf format) - Updated 11/13/12
  • Available Elements and Projections (pdf format) - Updated 11/9/10
  • WMO Communication Headers for 5-km CONUS GMOS (pdf format)
  • GRIB2 encoding of gridded MOS
  • Coming Soon - Grid Specifications - for now see GRIB2 encoding page above for specs
  • Flow diagram of Grids to AWIPS/N-AWIPS
  • Gridded MOS Notifications

  • Technical Implementation Notice 13-49 (TIN) Transmitted December 23, 2013
  • Public Information Statement - 2.5 km GMOS Sent December 6, 2013
  • Amended Technical Implementation Notice 12-09 (TIN) Transmitted November 1, 2012
  • Public Information Statement - 2.5 km GMOS and HRMOS QPF Sent October 13, 2011
  • Technical Implementation Notice 10-27 (TIN) - Hawaii GMOS Transmitted October 4, 2010
  • Technical Implementation Notice 10-04 (TIN) Transmitted January 11, 2010
  • Technical Implementation Notice 07-82 (TIN) Transmitted October 24, 2007
  • Amended Technical Implementation Notice 06-87 (TIN) Transmitted March 8, 2007
  • Amended Technical Implementation Notice 05-56 (TIN) Transmitted July 27, 2006
  • Data Review Group - NWS Request for Change (RC) approved Initial implementation of Hawaii, scheduled for November 9, 2010
  • Data Review Group - NWS Request for Change (RC) approved, Initial Alaska implementation, scheduled for February 26, 2008
  • Data Review Group - NWS Request for Change (RC) approved, Second implementation, postponed from March 13, 2007
  • Data Review Group - NWS Request for Change (RC) approved, Initial implementation, scheduled for August 15, 2006
  • Gridded MOS Training Material

  • MOSGuide - IFPS Smart Tools Gridded GFS MOS Reference Page, Courtesy of Eastern Region Scientific Services Division - D. Novak
  • AMS Short Course - The Role of Model Output Statistics (MOS) in Downscaling of NWP Model Output - Glahn 2006 (PowerPoint Presentation)
  • Gridded MOS - Techniques, Status, and Plans - Dallavalle and Glahn 2006 (PowerPoint Presentation)
  • Gridded MOS - Techniques, Status, and Plans - Dallavalle and Glahn 2006 (published for web)
  • Gridded MOS Presentation for Western Region SOOs (PowerPoint Presentation)
  • Gridded MOS Examples and Case Studies

  • Gridded MOS Removal of COOP sites "near" METARs from Max/Min Analyses - March 2011
  • Gridded MOS Demonstration of Elevation Correction - July 2008
  • Gridded MOS Wind Case Study - February 2008
  • Gridded MOS Land/Water Mask Change - December 2007
  • Gridded MOS References

    Available in pdf format

  • Toward A Gridded MOS System - Dallavalle and Glahn, 2005
  • Using Geographical Information Systems to Develop Gridded Model Output Statistics - Sheets et al., 2005
  • Gridded MOS - Techniques, Status, and Plans - Glahn and Dallavalle 2006
  • MDL Office Note 06-01 - Performance of Three Forecast Systems at Selected MOS and Non-MOS Stations -Schenk 2006
  • The Gridding of MOS - Glahn et al. 2009
  • Gridded model output statistics: Improving and expanding - Gilbert et al. 2009

  • National Weather Service
    Office Of Science and Technology
    Meteorological Development Laboratory
    Statistical Modeling Branch
    1325 East West Highway
    Silver Spring, MD 20910
    Page Author: MOS Web Team
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    Page last Modified: Tuesday, 28 January 2014 14:03 UTC