DSS presents the Global Stratospheric Analyses on a pair of 65x65 polar grids, daily at 12Z. These were operationally prepared by NCEP.
The analyses are available on 8 mandatory levels from 70 to 0.4 mb. Parameters include pressure, geopotential height, and temperature.
This dataset is in GRIB format. The data is free, through the DS067.3 data page. MORE