海洋预报2017，Vol.34Issue(3)：41-55,15.DOI:10.11737/j.issn.1003-0239.2017.03.006
相似路径台风“山神”(1223)和“海燕”(1330)降水对比分析
Analysis of precipitation associated with the similar track typhoon "Sontinh" (1223) and "Haiyan" (1330)
摘要
Abstract
Using NCEP 1 ° × 1 ° analysis data,satellite and radar data,the characteristics of precipitation of typhoon 'SONTINH'and'HAIYAN'with similar track were analyzed and compared.The results displayed as follows:(1) The ground-based observations showed that the precipitation intensity of typhoon'SONTINH'was stronger than that of typhoon'HAIYAN'.The TRMM satellite data revealed that in the course of typhoon development of 'SONTINH',the heavy rainfall was biased to the north side of the typhoon,but the rainfall in the'HAIYAN'was evenly distributed on the north and south sides of the typhoon.(2) By analyzing the water vapor fluxes and vertical winds on the north and south sides of the typhoon,it was found that the water vapor and the vertical velocity of typhoon'SONTINH'were well matched,which can explain the precipitation distribution well.The water vapor and the vertical velocity of the typhoon'HAIYAN'showed obvious asymmetry,which was different with the precipitation distribution.The reason was that the water content of'HAIYAN'is small,vertical velocity exceeded a certain value on the precipitation may have the same effect,resulting in a more uniform distribution of precipitation.(3) The input zone of kinetic energy and the large value area of water vapor,the input zone of sensible heat,latent heat and the vertical speed of the typhoon'SONTINH''HAIYAN'corresponded well.The water vapor flux in the kinetic energy input zone was stronger.As the energy accumulated,the atmospheric stability became weaker,which leaded to the release of unstable energy.Correspondingly,the precipitation in the region was more than normal.(4) From the basic reflectivity factor field of the two typhoons,'SONTINH'had the pre-TC squall line.When the two typhoons were nearby the Hainan Island,strong echoes were maintained in the middle and south parts of Hainan Island for a long time.While once the typhoons were away from the Island,the'train effect'caused by the strong echo zone in the rear of'SONTINH'was located in Dongfang city,and the distribution of'HAIYAN'was on the east of Wuzhishan.Radar radial velocity field showed that two typhoons near the Hainan Island,the central and southern local terrain caused by'upwind area'.Finally,the Hainan Island topographic effect to'SONTINH'was stronger than the'HAIYAN'.关键词
海南岛/相似路径/台前飑线/水汽通量Key words
the Hainan Island/the similar track/the pre-TC squall line/water vapor fluxes分类
天文与地球科学引用本文复制引用
周海波,白爱娟,蔡亲波..相似路径台风“山神”(1223)和“海燕”(1330)降水对比分析[J].海洋预报,2017,34(3):41-55,15.基金项目
科技部国家科技支撑计划项目(2013BAK05B03). （2013BAK05B03）
