Abstract:

In order to understand the reliability of total precipitable water vapor (TPW) derived from FY2E satellite data over the Southeast of Tibetan Plateau and its adjacent areas, FY2E TPWs are compared with the radiosonde (RS) TPWs during the period from 2010-2012. The results show that over the Tibetan Plateau the average monthly FY2E TPWs are larger than RS TPWs except in July. The relative errors are less than 25% in June and July and more than 50% in other months, especially in January as high as 78045%. The correlation coefficient between FY2E TPW and RS TPW is negative. Over the low altitudes the average monthly FY2E TPWs are larger than RS TPWs in June and July and smaller in other months. The relative errors are less than 4% in May to August, but in January as high as 105.84%. The correlation coefficient is greater than 0.5 during the period from April to October. The linear correction model of FY2E TPW with a standard error of 6.57 mm could be improved to count error in individual sites.