基于DEM的克孜勒苏柯尔克孜自治州气候要素空间分布模拟

Analysis of the Spatial Distribution of Climate Elements in Kezilesu Kirgiz Autonomous Prefecture Based on DEM

根据新疆克州及其周边13个气象台站1961—2010年的历史气候资料,采用基于DEM的空间插值技术对该地区年平均气温、降水量和日照时数等气候要素的空间分布进行了模拟分析。结果表明:(1)经验证,该方法对克州年平均气温等主要气候要素的空间分布模拟效果较好,精度较高;(2)新疆克州年平均气温的空间分布总体呈现"平原高,山区低"的特点;年降水量呈现"北部多,南部少;山区多,平原少"的空间分布格局;年日照时数的空间分布总体呈现"高山带多,中、低山带和山前倾斜平原少"的特征。

Based on the monthly climate data during 1961-2010 from 13 meteorological stations in Kezhou district in Xinjiang, the spatial distribution of annual mean temperature, precipitation and sunshine duration were analyzed by using the methods of three-dimensional, quadratic trend surface simulation and Kriging residual error revising based on GIS. The main results were obtained as follows： （1） the simulation to the spatial distribution of the climate elements had a reliable result that was verified; （2） the spatial distribution of the climate elements were obviously different in different regions in Kezhou district, generally, annual mean temperature was higher in the plain than in the mountain areas, annual precipitation was more in the northern and mountain areas than in the southern and plain, and sunshine duration was more in the higher mountain areas than in the lowermiddle mountain areas and plain.