兴隆山地区气温与降水的面域化处理

Modeling of Temperature and Precipitation Distribution in Xinglong Mountain Area

利用DEM和气象数据,在常规统计模型的基础上,以地理信息系统为支撑,首先对兴隆山地区年均气温和降水进行了关于经纬度和海拔的回归分析,然后将9个气象站点的实测值代入平均统计方程,生成研究区气温和降水栅格图,并对残差值进行了K rig ing处理。针对气温和降水不同的变化规律,对气温进行了地形校正分析,并计算了垂直递减值和南北坡向上的差异;对年均降水量用抛物线模型进行了模拟。气温和降水的面域化处理结果基本符合实际。

Assisted by GIS, the annual average Temperature and Precipitation in Xinglong Mountain area are analysed with longitude, latitude and altitude based on DEM and Conventional Statistical Model （CSM）. The measured values from the 9 weather stations are substituted into the equations which are built in the process of regression analysis to create Temperature and Precipitation grids. The residual values are dealed with Kriging. Aiming at the different rules of Temperature and Precipitation, annual average Temperature is accommodated by Topography-Adjusted Statistical Model （TASM） on the small scale, the tempreture vertical gradient is calculated and the difference between the temperature of northward and southward slope is compared; the annual average Precipitation is modeled by Parabola model. The results of modeled Temperature and Precipitation distribution accord with the truth on the whole.