热带气旋(TC)登陆前后往往引发严重的暴雨及洪涝灾害,故热带气旋暴雨研究长期受到人们的关注。热带气旋降雨区可分六块(陈联寿,2010),分别为TC核心区降雨(Core region rain)、螺旋雨带(Envelop rain or spiral rain band)、TC内部中小尺度系统降雨(Meso or micro system rain)、不稳定降雨(Unstable rain)、台前飑线降雨(Squall line rain)和TC远距离降雨(Remote rain )。正是这第六块降雨出现在TC环流的千里之外,常受到TC暴雨预报的忽视。这块降雨虽然与TC相隔遥远,但它的出现和TC之间有密切的物理联系,故称之为热带气旋远距离降雨(Tropical cyclone Remote Precipitation—TRP).这块降雨(TRP)形成的机理正是本文研究的主题。
并非所有的TC都能产生TRP现象,只有一小部分TC能产生,这是一种小概率事件。TRP不仅发生在中国,也发生在日本和美国。美国科学家(Cote,2007)将此类降雨称为Predecessor Rain Events ahead of...
【英文摘要】
Tropical cyclones may produce precipitation or torrential rainfall in an area in front of and away from the cyclone. We call this phenomenon as the Tropical-cyclone Remote Precipitation (TRP). The statistics in this paper show that TRP is a small probability event. It is difficult to predict this phenomenon in operational circumstance. The TRP can also be found in Japan and the United States. American scientists call this as Predecessor Rain Events ahead of tropical cyclone (PREs).
The statistical analy...