This dataset contains a time-series collection of daily gridded Northern Hemisphere tropospheric data on a 47x51 polar-stereographic grid. These grids have been assembled by DSS from the analyses of various operational models and meteorological projects, and they cover the overarching period from January 1946 forward, although periods for individual parameters and levels will vary. The grids continue to be updated with new data.

Available parameters include sea-level pressure, surface and sea-surface temperatures, and upper-level geopotential height, temperature, wind, and vertical motion at levels from 1000mb up to 100mb.