European Centre for Medium-Range Weather Forecasts Operational Analysis data set

The data is updated monthly, two to three weeks after the end of the month, e.g data for June becomes available soon after mid July. Vorticity, divergence, temperature, surface pressure and vertical velocity data in T106 spectral form plus specific humidity on a gaussian N80 grid are available on the original model levels and also interpolated to standard pressure levels.

Surface data such as temperature, soil wetness, snow depth etc are also available on the gaussian grid. Although the ECMWF model is run at T213 (N160) resolution for this period the data available through the BADC are at T106 (N80) resolution for consistency with the ECMWF Reanalysis project (ERA) data and in order to reduce storage requirements. This dataset therefore complements and updates the ERA dataset, which is also available through the BADC.