MODIS-based reversion of atmospheric water vapor content over Jinta Oasis

During the Jinta experiment in 2004,sounding balloons were set free to collect the meteorological data in the upper air,such as temperature,pressure,and humidity to calculate the total water content in the air. Then,the remote sensing data of EOS-MODIS are used to revert the total water vapor content The retrievals are compared with the observed ones,as a result,the maximal relative error is 8.02%,the minimal is 0.70% and the average relative error is 4.5%,which shows that the reversions are believable According to the regional distribution of the water vapor content and the section plane along the sounding site from East-West and South-North,there is biggish difference in the spatial distribution of the water vapor content. The water vapor content,in all,is relatively less over the gobi and hungriness and more over the oasis;there is "the clothesline effect" which influences the stabilization and development of the oasis at the margin of the oasis or the long and narrow protection forest through the deserts or in the neighborhood of the river and the aqueduct.