NOUS41 KWBC 231420



Technical Implementation Notice 11-57

National Weather Service Headquarters Washington DC

918 AM EST Fri Dec 23, 2011


To:       Subscribers:

          -Family of Services

          -NOAA Weather Wire Service

          -Emergency Managers Weather Information Network


          Other NWS partners and employees


From:     Timothy McClung

          Chief, Science Plans Branch

          Office of Science and Technology (OST)


Subject:  Upgrade of the NCEP Air Quality Forecast

     System Effective January 31 2012


Effective Tuesday January 31, at 1200 coordinated Universal Time (UTC), the National Centers for Environmental Prediction (NCEP) will add an operational product generated by the HYSPLIT model to its operational product suite.


This upgrade will expand operational prediction products to include predictions of dust from dust storms over the CONUS from the 06 UTC and 12 UTC prediction cycles.


Once operational the output from this transition will be available from the NWS National Digital Guidance Database (NDGD) server at:


This output is currently being generated as an experimental product from 06UTC and 12UTC prediction cycles at NCEP.  These data can be obtained from the experimental NDGD server at:



The file names for dust prediction products are:


- ds.dustsdc01.bin: for concentration of dust in the air in

  the lowest model layer near the surface.


- ds.dustvdc01.bin: for average concentration of dust in

  the column of air between the surface and 5km altitude.


More information on NCEP model changes can be found at:


For questions concerning EMC issues, please contact:


  Geoff Manikin 

  NCEP - Environmental Modeling Center

  Silver Spring Maryland 

  301 763 8000 X7263


For other questions concerning these changes, contact:


  Rebecca Cosgrove

  NCEP - Production Management Branch

  Camp Springs Maryland

  301 763 8000 X7148


NWS National Technical Implementation Notices are online at: