The analysis of water vapor distribution over Taklimakan Desert  

作　　者：LIU XlaoYang MAO JieTai ZHANG Fan CUI CaiXia LIU Dian LI Jun ZHAO Ling 

机构地区：[1]Laboratory for Climate and Ocean-Atmosphere Studies,Department of Atmospheric and Oceanic Sciences Peking University,Beijing 100871,China [2]Department of Integrated Observations,China Meteorological Administration,Beijing 100081,China [3]Institute of Desert Meteorology,China Meteorological Administration,Urumqi 830002,China [4]North China Power Engineering Co.Ltd,Beijing 100120,China

出　　处：《Science China Earth Sciences》2012年第3期446-455,共10页中国科学（地球科学英文版）

基　　金：supported by National Natural Science Foundation of China(Grant Nos. 40675003 and 41075011)

摘　　要：Up to now, all analysis of the distribution of water vapor over the Taklimakan desert area only depends on limited ground measurements and radio soundings setting mostly on the outer margin area. This paper establishes an approach to retrieve the water vapor over the desert at high temporal and spatial resolutions by the use of FY2C geostationary satellite split-window channels in cooperation with ground-based GPS water vapor measurement. Results show that the water vapor distribution over the Taklimakan desert is affected highly by topography and surface properties. The outer margin area has generally more water vapor than the inner area. Over the outer margin area, the western part has more water vapor than the eastern part, and the northern part has more than the southern part. The driest area lies to the south of Tazhong, east of Hotan River, and extended to the south boundary of the desert. Similar to elsewhere, water vapor over the desert area shows diurnal, monthly, seasonal and annual variations even at the driest inner area of the desert. In summer, the water vapor is transported from west to east over a long distance along the westerlies at a height between 700-400 hPa and with the average speed of 50 km h-1.Up to now, all analysis of the distribution of water vapor over the Taklimakan desert area only depends on limited ground measurements and radio soundings setting mostly on the outer margin area. This paper establishes an approach to retrieve the water vapor over the desert at high temporal and spatial resolutions by the use of FY2C geostationary satellite split-window channels in cooperation with ground-based GPS water vapor measurement. Results show that the water vapor distribution over the Taklimakan desert is affected highly by topography and surface properties. The outer margin area has generally more water vapor than the inner area. Over the outer margin area, the western part has more water vapor than the eastern part, and the northern part has more than the southern part. The driest area lies to the south of Tazhong, east of Hotan River, and extended to the south boundary of the desert. Similar to elsewhere, water vapor over the desert area shows diurnal, monthly, seasonal and annual variations even at the driest inner area of the desert. In summer, the water vapor is transported from west to east over a long distance along the westerlies at a height between 700-400 hPa and with the average speed of 50 km h-1.

关 键 词：FY2C GPS Taklimakan Desert water vapor distribution 

分 类 号：P941.73[天文地球—自然地理学] TQ223.121[化学工程—有机化工]