摘要
根据2012年第9号台风"苏拉"登陆后环流形势的演变和台风中心附近涡度场、散度场等物理量场的变化特征,对台风"苏拉"造成闽西地区暴雨的原因进行了分析。结果表明,台风"苏拉"登陆福建省后,因受大陆高压南落的影响缓慢西行,在福建省内滞留时间较长,且台风结构出现了明显的南倾。这是影响台风登陆后,其路径南侧闽西地区产生强降水的重要原因。此外,分析台风登陆福建省后的物理量场后得知,台风的高能区和不稳定区位于闽西地区,为该地区的强降水提供了有利条件。
This article uses environment air flow and the physical fields to study the influence of No.1209 typhoon“Sura”on the West Fujian rainstrom. Results showed that after landing in Fujian, because of the southward movement of continental high, the structure of “Sura”inclined southward. This is the important circulation background that typhoon rainstorm occurred mainly in West Fujian which was located on the south side of typhoon’s path after the landfall of in addition according to the physical quantity field , high energy region and unstable region is located in West Fujian .This situation also provide favorable conditions for the heavy precipitation in the region.
出处
《科技与创新》
2014年第18期144-146,共3页
Science and Technology & Innovation
关键词
台风“苏拉”
物理量场
大陆高压
散度场
typhoon ＂Sura＇
rainstorm
sub-tropical high pressure
southward structure
