摘要
热带测雨卫星测雨雷达TRMM PR已成功运行了17年之久,积累了海量的数据,使得量化中到强降水取得前所未有的进步,然而其灵敏度较低,其最小可探测信号大约是17d BZ,故它在探测和量化弱降水方面有着固有的劣势。本文从弱降水观测的角度,归纳、分析并对国内外各学者对于PR探测降水评估研究进展进行评估。获得并分析、验证和评价TRMM PR对降水的观测结果的影响,在对弱降水信号性能进行探测。而Cloud Sat卫星的成功发射,其搭载的云廓线雷达(CPR)由于较高的灵敏度,被普遍认为是探测弱降水的最可靠的工具,结合CPR的观测信息可以有效地评估PR对于弱降水的观测性能。
Tropical rainfall measuring rainfall measuring radar satellite TRMM PR has been runsuccessfully for 17 years, accumulated the massive amounts of data, makes quantitative to the intensity ofprecipitation in the unprecedented progress, but the sensitivity is low, the minimum detectable signal isabout 17 DBZ, therefore it has inherent in quantitative detection and weak precipitation disadvantage. Inthis paper, from the Angle of the weak rainfall observation, induction, analysis and evaluation of thedomestic and foreign scholars for PR detecting precipitation to evaluate research progress. Obtain andanalysis, verification and evaluation of TRMM PR influence on precipitation observations, in detectingthe weak rainfall signal performance. The CloudSat the successful launch of satellite, with a cloud profileradar （CPR） with high sensitivity, is widely regarded as the most reliable tools that detect lightprecipitation combined with CPR observation information can effectively evaluate the PR for weakrainfall observation performance.
出处
《科技通报》
北大核心
2016年第5期37-40,47,共5页
Bulletin of Science and Technology
基金
2014年国家自然基金(41375030)
关键词
弱降水
观测评估
卫星遥感
降水反演
weak precipitation
observation and assessment
satellite remote sensing
precipitationinversion
