基于DEM的新疆克州气候要素空间分布模拟

摘要: 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。

Climate elements spatial distribution Analysis in Kezhou district based on DEM

Based on the monthly climate data during 1961-2010 from 13 meteorological stations in Kezhou district of Xinjiang, the fine spatial distribution characteristic of annual mean temperature, precipitation and sunshine duration were analyzed by using the methods of three-dimensional and quadratic trend surface simulation and Kriging residual error revising based on GIS. The main results are obtained as follows: (1) Actual inspection shows the methods mentioned above showed that better simulation effect to the various climate elements spatial distribution ;(2)Various climate elements are very obviously different in different regions in Kezhou district, generally, annual mean temperature is higher in plain than in mountain areas, annual precipitation is more in northern and mountain areas than in southern and plain, and sunshine