The NCEP Global
Forecast System model (GFS, formally the AVN) stratospheric temperature, height, and
total ozone analyses and forecasts are generated each day from the 00Z cycle at
the levels: 70, 50, 30, 20, 10, 5, 2, and 1 hPa (approximately 18-45 km). Below are contoured
maps of the initial analyses (f00) and forecasts at 24 hour intervals out to
10 days (f240). Additional information about the validity of the forecasts is given in the Forecast Error
set of graphs for temperature and zonal wind for all pressure levels from 200 to 1 hPa.