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利用GAME Tibet加强观测期间所得到的青藏高原不同地点的降水量资料 ,初步分析了 1 998年 7月和 8月夏降风降水随纬度和海拔高度的变化特征。研究表明藏北高原夏季风降水的分布是纬度效应和海拔高度效应综合作用的结果。 7月份降水量的纬度效应要比高度效应明显 ,而 8月份的降水量不但具有一定的纬度效应 ,也具有一定的海拔高度效应。 7月～ 8月份的降水量主要表现为随纬度的分布特征 ,但它也受到海拔高度效应的修正 ,即由于地形对降水的再分配过程 ,使得某些测点降水随海拔高度的升高而增加。由于青藏高原地表状况复杂 ,其上的降水显然应当同时受到各种因素的影响和制约 ,因此要简单地区分各因子的作用是较困难的。
Using GAME Tibet to enhance the precipitation data obtained from different locations of the Qinghai-Tibet Plateau during the observation period, the variation characteristics of summer precipitation winds with latitude and altitude in July and August 1998 were analyzed. The results show that the distribution of summer monsoon rainfall over the northern Tibet Plateau is the result of the combination of latitude and altitude effects. The latitudinal effect of precipitation in July is more obvious than the height effect, while the precipitation in August not only has certain latitude effect, but also has certain altitude effect. The precipitation from July to August is mainly distributed with the latitude, but it is also corrected by the altitude effect. Because of the redistribution of precipitation to the terrain, the precipitation of some stations increases with the altitude increase. Due to the complex surface conditions of the Qinghai-Tibet Plateau, it is clear that precipitation on the surface of the Qinghai-Tibet Plateau should be affected and constrained by various factors at the same time. Therefore, it is difficult to simply distinguish the effects of various factors.