青藏高原东南部及其邻近地区FY2E卫星晴空大气可降水量评估

doi:10.11870/cjlyzyyhj201504013

长江流域资源与环境 >> 2015, Vol. 24 >> Issue (04): 625-.doi: 10.11870/cjlyzyyhj201504013

青藏高原东南部及其邻近地区FY2E卫星晴空大气可降水量评估

闵文彬1，李宾2，彭骏1，罗清1

1.中国气象局成都高原气象研究所，四川成都 610071；2.四川省气象科技服务中心，四川成都 610071

出版日期:2015-04-20

EVALUATION OF TOTAL PRECIPITABLE WATER DERIVED FROM FY2E SATELLITE DATA OVER THE SOUTHEAST OF TIBETAN PLATEAU AND ITS ADJACENT AREAS

MIN Wenbin1, LI Bin2, PENG Jun1, LUO Qing1

1. Institute of Plateau Meteorology, China Meteorological Administration, Chengdu 610071, China；2. Sichuan Meteorological Science and Technology Service Center, Chengdu 610071, China

Online:2015-04-20

摘要/Abstract

摘要：

为了解青藏高原东南部及邻近地区FY2E卫星大气可降水量(FY2E TPW)的可靠性，利用2010~2012年探空计算值(RS TPW)对其进行对比分析。结果表明：青藏高原地区月平均FY2E TPW除7月偏小外，其余月份都偏大，相对偏差仅有6月和7月在25%以内，其余月份都在50%以上，尤其是1月高达78045%，FY2E TPW与RS TPW之间为负相关系数， FY2E TPW在青藏高原地区不可靠；低海拔地区，6月和7月平均FY2E TPW偏小，其余月份都偏大，5~8月相对偏差不足4%，但1月相对偏差却高达10584%；低海拔地区4~10月，FY2E TPW与RS TPW相关系数大于05，FY2E TPW订正模型估计标准误差为657 mm，个别站点误差较大，还有待进一步的改进。

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.

闵文彬1，李宾2，彭骏1，罗清1. 青藏高原东南部及其邻近地区FY2E卫星晴空大气可降水量评估[J]. 长江流域资源与环境, 2015, 24(04): 625-.

MIN Wenbin1, LI Bin2, PENG Jun1, LUO Qing1. EVALUATION OF TOTAL PRECIPITABLE WATER DERIVED FROM FY2E SATELLITE DATA OVER THE SOUTHEAST OF TIBETAN PLATEAU AND ITS ADJACENT AREAS[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2015, 24(04): 625-.

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