利用RegCM3模式模拟新疆区域气候(英文)

Simulation of Climate over Xinjiang with RegCM3

为了检验高分辨率区域气候模式 RegCM3 对新疆气候的模拟能力,对 2005 年夏季气候进行了模拟试验,针对模拟的温度场和降水场作了具体分析,并利用新疆境内102 个气象站点的逐日资料对温度场和降水场进行了检验分析。温度场的模拟结果表明,模式能较好地反映新疆的温度场空间分布特征,但在数值上出现明显的"冷偏差",整体偏低4 ～7 ℃; 模式较好地模拟了新疆的夏季降水特征: 降水高值区位于天山山区。模式对平原地区的降水模拟较接近实测值,但对山区的模拟效果较差。

To verify the simulating ability of high-resolution regional climate model RegCM3 in Xinjiang,the climate of summer in 2005 was simulated.The specific analysis was directed against simulated temperature and precipitation fields,which were conducted the check analysis by use of the daily data from 102 meteorological stations in Xinjiang.The simulation results of temperature fields showed that RegCM3 model had ability to reflect the spatial distribution characteristics of temperature fields in Xinjiang.However,the regional average temperature had numerically significant 'cold bias' of 4-7 ℃ on the low side on the whole.The model simulated well the features of summer precipitation in Xinjiang.The area of high precipitation was located in Tianshan Mountains.The precipitation simulation of the model was in closer proximity to the measured value in plain areas,but the simulation effect was not so good in mountain areas.