利用ATMS资料反演台风“海燕”温湿场效果研究

RESEARCH ON ACCURACY OF RETRIEVED TEMPERATURE AND HUMIDITY FIELD IN TYPHOON ‘HAIYAN' UTILIZING ATMS

通过搭载在NPP卫星上ATMS探测器所获得的微波探测,针对台风"海燕"进行温湿廓线反演,并将反演结果与ECMWF再分析资料对比,研究ATMS资料在台风"海燕"中的反演的应用效果。结果表明,反演所得温湿廓线有着较高的空间分辨率,对台风系统的温湿场结构有着细致的反映。对于实际温度较低的区域,ATMS反演的温度场总体偏低,而实际温度场较高的区域,ATMS反演值总体偏高,在实际应用中需要进行系统订正。在垂直廓线的反演方面,台风三个区域的反演结果与实际观测接近,这对台风的监测与预警有重要意义。

One-dimensional retrieval was performed on typhoon ‘Haiyan＇ utilizing ATMS boarding on the satellite Soumi NPP to retrieve temperature and water vapor profiles, and then comparisons were made between retrieved profiles and ECMWF reanalysis to assess the results. It can be concluded as follows. First, the results are of high spatial resolution and therefore can precisely present the temperature and humidity distribution of the typhoon. Second, the retrieved temperature is low in the areas of low temperature and high in the areas of high temperature, and similar patterns are found with humidity. This means that systematic revision may be needed in routine application. Third, the results of retrieved temperature and humidity profiles are generally accurate, which is quite important to typhoon monitoring.