Forecast Meteorological Data

The next menu presents the user with the choice of using forecast or archived meteorology. Drop-down menus list the data sets available for running HYSPLIT-WEB. Currently, there are 9 forecast data sets available under the FORECAST DATA drop-down menu, all of which are stored on internal NOAA ARL computers.  The NAM, RUC and GFS data sets are obtained from NOAA's National Centers for Environmental Prediction (NCEP) in a standard format called Gridded Binary (GRIB) format and then automatically converted to HYSPLIT compatible format.  The AFWA MM5 data sets are obtained in a similar fashion from the Air Force Weather Agency (AFWA).

Forecast Data Sets

• NAM Alaska (North American Mesoscale - 45 km, 3 hourly to 36 hrs, 4 per day),

• NAM (North American Mesoscale - 12 km, 3 hourly to 48 hrs, 4 per day),
• NAM (North American Mesoscale - 40 km, 3 hourly to 84 hrs, 4 per day),
• RUC (Rapid Update Cycle - 20 km, hourly to 12 hrs, 8 per day),
• AFWA MM5 (Air Force Weather Agency MM5 - 15 km, 3 hourly to 48 hrs, 2 per day),
• AFWA MM5 (Air Force Weather Agency MM5 - 45 km, 3 hourly to 72 hrs, 4 per day).

• GFS (Global Forecast System - 1 degree, 3 hourly to +3.5 days, 4 per day),
• GFSX (Global Forecast System - 1 degree, 6 hourly to +7.5 days, 4 per day),
• GFSLR (Global Forecast System - 2.5 degree, 12 hourly from +8 to +16 days, 4 per day).