| Abstrakt: |
The use of climate models, global or regional, is a modern approach to diagnose and predict the different weather and climate variables. Models become more and more comprehensive in the parameterization of the physical processes in the atmosphere and accurate in computation of wind, temperature, precipitation, radiation and other fields and flows. The regional climate model RegCM, version 4.4rc8, is used in this work to calculate the mean monthly temperatures, monthly maximum and minimum extreme temperatures as well as monthly total precipitations for years 2000 and 2005. They are compared with the observations at 19 stations, situated in different climate regions over Bulgaria. For this purpose the model (in a sub-grid mode with horizontal grid step 10 km) is used after some adjustments towards input parameters used, mainly in the choice of different cumulus convection parameterization schemes, in order to obtain better results for representations. The comparison shows that the model needs of further adjustment in order to improve the results. This requires sensitivity experiments, including global dataset change. The model uses the initial and boundary condition from the global climate models, in this case the re-analyses from EIN15 dataset. Some of the results are presented in figures using the visualization package GrADS. [ABSTRACT FROM AUTHOR] |
