基于CloudSat资料的青藏高原云分布特征研究

Study on Cloud Distribution Characteristics of The Tibetan Plateau Based on CloudSat Data

基于2007—2010年CloudSat卫星资料,本文分析了青藏高原云的水平分布及垂直结构分布特征,得出以下结论:(1)青藏高原地区夏季总云量明显多于冬季,且夏季总云量呈现出由东南向西北减少的分布趋势;(2)青藏高原地区云分布频率的垂直结构会随季节的变化而变化,夏季的云分布频率高于其他三个季节,最大云分布频率位于7 km左右的高空;(3)青藏高原地区东部云分布频率大于西部的云分布频率,不同高度层云分布频率变化趋势不同。

Based on the CloudSat satellite data from 2007 to 2010,This passage analyzed the horizontal distribution and vertical structure distribution characteristics of the Tibetan plateau cloud.The following conclusions are drawn:(1)the total cloud amount over the Tibetan plateau in summer is significantly more than that in winter,and the total cloud amount decreases from southeast to northwest in summer.(2)The vertical structure of cloud distribution frequency over the Qinghai-Tibet Plateau changes with the seasons.The cloud distribution frequency in summer is higher than that in the other three seasons,and the maximum cloud distribution frequency is located at the altitude of about 7 km.(3)The cloud distribution frequency in the eastern part of the Qinghai-Tibet Plateau is larger than that in the western part,and the variation trend of cloud distribution frequency is different at different altitude levels.