【摘要】 用GMS—5水汽图像、红外云图、TBB及逐时地面雨量资料分析2002年安徽省二度梅跳跃性暴雨,结果表明(1)GMS红外云图清楚地揭示出安徽省二度梅跳跃性暴雨整个降水过程是由主雨带三次北跳所造成,清楚地分辨出各阶段直接造成降水的影响系统和性质、不同时段造成降水的云团性质。(2)在水汽图像中可发现红外云图上不易分析和看出的特点,能为预报提供重要参考信息。更多还原

【Abstract】 The jumping heavy rain occurred in Anhui province was analyzed with GMS-5 vapor cloud chart, infrared cloud chart, TBB and hourly rainfall data. The result showed: (1) GMS infrared cloud chart clearly discovered that the main rain band jumping north three times caused the whole jumping heavy rain of double Mei-Yu in Anhui province. The cyclone that once kept and rotated at Hetao region moved south and brought cold air, which played an important role. GMS infrared cloud chart clearly distinguished the influencing systems and cloud mass which directly brought precipitation at different stages and their characteristics. (2) Vapor images could not only reflect deep synoptic system but also expose more clearly than infrared cloud chart the occurrence and development of deep mesoscale and small scale system and their characteristics which is difficult to find and analyze in infrared cloud chart. It was very clear that at the stage of cyclogenesis during heavy rain band’s thirdly jumping, there was not cloud system with anticyclonic structure in infrared cloud chart, while anticyclonic vapor feather obviously formed at the dot "A" in vapor cloud chart, developed and protruded north while moving east. It showed that the vapor image was significative of the prediction of the system’s development in future. (3) In general, rain mass corresponded to the region of TBB≤-53 ℃, and strong rain mass corresponded to the region of TBB≤-63 ℃.更多还原