نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی کارشناسی ارشد مهندسی منابع آب، گروه مهندسی آب، دانشکده کشاورزی، دانشگاه ارومیه، ارومیه، ایران
2 استادیار، گروه مهندسی آب، دانشکده کشاورزی، دانشگاه ارومیه، ارومیه، ایران
3 استاد گروه مهندسی آب، دانشکده کشاورزی، دانشگاه ارومیه، ارومیه، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
The regional climate models have an important role in simulating the atmospheric and land surface processes and are considered as an important tool in climatic studies. In this study, with the aim of comparing the performance of the different convection parameterization schemes (Emanuel, Tiedtke, Kain-Fritsch, Grell-AS and Grell-FC) in simulating precipitation, temperature and actual evapotranspiration over the Lake Urmia Basin, the RegCM4.5 model was used for downscaling the outputs of NNRP1 model for a 5-year period. Moreover, the effect of application of two different spatial resolutions was investigated. The results showed that in the 48 km resolution, the Kain-Fritsch scheme, with a slight difference from the Grell-AS and the Grell-FC, had the highest performance in simulating precipitation and actual evapotranspiration and the Grell-AS scheme had the highest performance in simulating temperature. In the case of 12 km resolution, the difference among stations in terms of the most appropriate convection scheme for simulating precipitation was high; but in the case of temperature, the Kain-Fritsch showed the superiority. Also, the comparison of the results for two spatial resolutions showed that, in most cases, application of the 12 km resolution resulted in no improvement in the simulation performance. Thus, the application of the Kain-Fritsch scheme and the 48 km resolution are recommended for the Lake Urmia Basin.
کلیدواژهها [English]