CAJ | 학술논문

针对TRMM降水数据在中国内陆是否可靠的问题,本研究采用了Xie Pingping根据地面观测站点产生的降水数据、中国气象局公开的759个站点观测降水数据与3B42_V6版本的TRMM降水数据,在中国内陆将地面观测数据同TRMM数据进行了深入对比分析。发现TRMM降水质量受地形影响很大,迎风坡偏小背风坡与山顶偏大,TRMM降水在汛期(夏季与秋季)比站点观测降水大,枯季(冬季与春季)TRMM相对精确。所以本研究建议在对TRMM降水数据进行应用时应该进行地形矫正。
침대TRMM강수수거재중국내륙시부가고적문제,본연구채용료Xie Pingping근거지면관측참점산생적강수수거、중국기상국공개적759개참점관측강수수거여3B42_V6판본적TRMM강수수거,재중국내륙장지면관측수거동TRMM수거진행료심입대비분석。발현TRMM강수질량수지형영향흔대,영풍파편소배풍파여산정편대,TRMM강수재신기(하계여추계)비참점관측강수대,고계(동계여춘계)TRMM상대정학。소이본연구건의재대TRMM강수수거진행응용시응해진행지형교정。
∶ In order to evaluate the reliability of TRMM precipitation in the inland of China, this paper compared the observed pre-cipitation and TRMM precipitation. We used three individual datasets which are (1) Xie Pingping 's grid precipitation, (2) observed precipitation on 759 gauges by the China Meteorological Administration, and (3) the 3B42_V6 version TRMM precipitation. The ma-jor results from this study: we first discovered that the TRMM precipitation was impacted by terrain, it is lighter in windward slope, and it is heavier in leeward slope and hill top; TRMM precipitation is heavier than the gauges observed precipitation in the flood season (summer and autumn) and more precisely in the Dry Season TRMM (winter and spring). Therefore, this study suggests that it should be corrected with terrain information at the time of application for the TRMM precipitation data.