Document Type : Research Paper

Author

• Rashid Saeidabadi

Associate Professor, Department of Geography, Urmia University

Abstract

The aim of current study are numerical simulation of the role of the Urmia Lake in climatic parameters in surrounding areas of the Lake. For analysis of climatic impacts of the Lake in Northwestern Iran the synoptic data in 5 station in the west and east of the lake were used. For simulation of the impacts of Urmia Lake in mean temperature and precipitation in surrounding areas the Regional Climate Model (RegCM4) and TAPM model and two time series years include 2003 and 2006 have been used. Then by using the models outputs and observed data performance, the models have been calibrated. For modeling the impacts of the Urmia Lake in climatic elements in surrounding areas, two scenarios were considered. First: Existence of the lake at it’s the maximum extent; two: Aquatic body of Urmia lake removed and substituted by an area having coverage of gravel and sand with a texture of loam and also desert. The results of this study indicate that the RegCM model has a good performance than TAPM in simulation of temperature and precipitation in the North West of Iran. By changing the Lake landuse, precipitation of the region will decrease which in spring is more than other seasons. Another impact of landuse change in northwest of Iran is change in mean temperature. This parameter in cold period of year will decrease and in warm period will increase.

Keywords

• Urmia lake
• Climate Elements
• Numerical simulation
• RegCM
• TAPM Model
• Northwest of Iran

Main Subjects

• Geomorphology