摘要
用 2 0 0 2年 3个热带气旋登陆广东的过程中自动站的降水资料 ,对TRMM准全球、准实时的 3h降水估测资料进行了检验 ,表明该资料与地面 3h降水有很好的相关性 ,可以反映出热带气旋 3h降水变化的特征。利用该资料分析了这 3个热带气旋登陆过程中不同半径、不同方向降水的时空变化特征 ,并分析了不同热带气旋之间降水差异的大尺度环流背景。研究发现 ,3个热带气旋登陆过程中心附近降水沿半径方向存在收缩和扩展的变化 ,除了低层水汽输送的变化和地形对降水造成影响之外 ,“北冕”和“黄蜂”都发现热带气旋外围降水加强会导致其中心附近降水减弱 。
The quality of quasi global, near real time, TRMM based precipitation estimates have been tested by automatic weather stations rainfall record in Guandong province, during the 3 tropical cyclones landfall periods in 2002. Results show that they have good relationship and the TRMM product can reveal the TCs 3 h temporal rain distributions. The temporal and spatial distributions of the TCs rain rate have been analysed, and the large scale circulation environment of these TCs have also been discussed. Results show that the radial distributions of the rain bands are changeable during the TCs landfall periods. Besides the low level moisture flux transmission and terrain, the inner region rain bands of TC Kammuri and Vongfong are weakened by the intensification of their outer region rain bands, that is similar to the former observation and research.
出处
《应用气象学报》
CSCD
北大核心
2004年第4期436-444,共9页
Journal of Applied Meteorological Science
基金
我国登陆台风灾害的监测及预报技术研究 ( 2 0 0 1DIA2 0 0 2 6)
登陆的南海热带气旋灾害预警技术研究
卫星资料在海洋气象监测和预报上的综合应用 ( 99M0 5 0 0 2G)联合资助
