DSS presents the Global Final (FNL) Analyses on 1.0x1.0 degree grids covering the entire globe every six hours. These were operationally prepared by NCEP. The NCEP documents About the Global Parallel System and EMC Model Documentation describe the model. For questions about the science of the FNL, contact the NCEP Science Liaison.

The analyses are available on the surface, 26 mandatory (and other pressure) levels from 1000mb to 10mb, boundary and some sigma layers, tropopause and a few others. Parameters include surface pressure, sea level pressure, geopotential height, temperature, sea surface temperature, soil values, ice cover, relative humidity, u- and v- winds, vertical motion, vorticity and ozone.

This dataset is in GRIB format. This is a popular dataset with MM5, WRF and RAMS users - see this. It is updated every 6 hours by DSS using files downloaded from the NCEP server. The data is free, through the DS083.2 data page. MORE.