The mesometeorological temperature field in a mediterrannean-alpine region

Summary The structure of the surface-air temperature field in meso-alpha and meso-beta scale is studied for the purpose of regionalisation and for the optimum interpolation meso-analysis in Slovenia. The possibilities of subregionalisation, of the split into the horizontal and the vertical part of autocorrelation function and of separation according to the general weather type have been tested. It was found that the influence of weather type could not be introduced without the simultaneous introduction of first-guess fields for each weather type. The relative importance of first-guess field versus the importance of the type of autocorrelation function is estimated by several tests of the optimum interpolation meso analysis.With 6 Figures