NCEP FNL Operational Model Global Tropospheric Analyses, July 1976 - continuing

These National Centers for Environmental Prediction (NCEP) FNL (Final) Operational Global Analysis data are on pairs of 2.5x2.5 degree hemispheric grids every twelve hours. This product was from the Global Forecast System (GFS) that was run operationally in near-real time at NCEP. The analyses are available on the surface, 12 mandatory levels from 1000mb to 50mb, boundary and some sigma layers, tropopause, and a few others. Parameters include surface pressure, sea level pressure, geopotential height, temperature, sea surface temperature, potential temperature, relative humidity, snow depth (weekly, Northern Hemisphere only) precipitable water, u- and v- winds and vertical motion. This dataset is maintained by NCAR's Data Support Section (DSS). Please see the external link to access the data.