新疆夏季温度和降水的典型空间分布

Typical Spatial Distribution of Temperature and Precipitation During Summer in Xinjiang

用奇异值分解法通过对新疆区域28站1961～2005年夏季(6～8月)平均温度和总降水量资料的分析,得到了新疆夏季主要三对温度和降水量空间分布的典型特征场。新疆夏季温度的空间分布与降水的空间分布基本呈反相关,多雨区的温度呈偏低趋势。夏季降水分布有南北反相、全疆一致、内外反相3种类型。前期5月份南、北疆的温度和降水特征一般会一直延续至夏季。

We got three main couples of typical spatial distribution of temperature and precipitation in Xinjiang during Summer（ Jun. Jul. and Aug ）, using SVD method to analysis the data of seasonal mean temperature and total precipitation of 28 meteorological observatories within Xinjiang during Summer from 196l to 2005. In Xinjiang, the spatial distribution of temperature is approximately negatively correlative with the spatial distribution of precipitation during Summer. That is to say the region with more precipitation always has lower temperature than usual. Mainly there are three patterns of spatial distribution of precipitation during Summer.One of those patterns shows that the abnormal trend of precipitation in northern Xinjiang is in reverse with southern xinjiang, another pattern shows all the region of Xinjiang approximately has the same trend of precipitation; the third shows the central part is in reverse with the rest part of xinjiang.The feature of temperature and precipitation in prophase （May.）is usual continued during Summer.