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ID:55596673
大小:2.40 MB
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时间:2020-05-20
《台风“凤凰”路径强度变化对太湖北岸风雨影响的诊断.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、中国摩c蠹据2015,31(17):209-216ChineseAgriculturalScienceBulletin台风‘‘凤凰’路径强度变化对太湖北岸风雨影响的诊断陈潇潇,王璐璐,查书瑶,钱昊钟(江苏省无锡市气象局,江苏无锡214101)摘要:为探讨2014年第16号台风“凤凰”运动路径怪异和数次登陆强度不变的特点,了解其给太湖北岸地区带来的风雨影响,通过对台风环境背景场的天气学分析和物理量诊断,对16号台风‘‘凤凰”的路径动态、强度变化、结构特征进行分析。结果表明:受副高进退和引导气流作用,台风“凤凰’’沿着副高外围,先后经历西进、北上,东出的运动,深层引导气流能较好的指示
2、台风的运动。台风“凤凰”自身体积较小,发生发展前期海温偏低,海洋热容量低,温度条件不利于台风的增强。同时,台风流场结构极为不对称,随着垂直风切的增强,台风强度减弱,并经过数次登陆,破坏了环流结构,总体强度难以增强。由于台风路径偏东,强度偏弱,影响范围较小,水汽输送条件不利,且无冷空气配合,太湖北岸地区在此次台风过程中以中雨为主,风力影响集中在台风环流中心附近,影响总体较小。关键词:凤凰;路径;引导气流;不对称结构;太湖北岸;风雨影响中图分类号:P4文献标志码:A论文编号:casb15010193AnalysisoftheEfectsofFung-wongTrackandStren
3、gthVariationonNorthBankofTaiLakeChenXiaoxiao,WangLulu,ZhaShuyao,QianHaozhong(MeteorologicalAdministration,WuxiJiangsu214101)Abstract:ThepaperaimstoinvestigatethecharacteristicsofunusualtrackandstrengthofseveretropicalstormFung—wong(1416),aswellastherainfallandwindcausedbyitin2014.Byanalyzingt
4、heweatherenvironmentalfieldsaroundFung—wonganddiagnosingitsphysicalquantities,thepathvariationandstrengthchangeaswellasstructurecharacteristicswerestudied.Resultsshowedthat:Fung—wongwasinfluencedbythechangeofsubtropicalhighandsteeringflow,movedalongthesubtropicalhishperiphery,travelledwestwar
5、dfirst。thenheadednorthwardandmovedeastwardouttotheseafinally.1hedeepsteeringflowplayedagoodroleinindication.Instrengthaspect,Fung—wongownedasmallsize,thepreviousseatemperaturewaslowSOastoreducetheheatcapacitylevel,herein,strengthofFung-wongcouldnotbeenhancedbytheseconditions.Meanwhile,thestru
6、ctureofFung-wongwasasymmetricbystudyingthewindfiledcharacteristics.Fung—wongwasweakenedaftertheboostofverticalwindshear,itsstructureWaSalsobrokenafterseverallandings.Overall。Fung—wongtrackedeastwardwithaweekstrengthtomakelimitedeffect.ThevaportransportconditionWasunfavorablewithnocooperationo
7、fthecoldair,andthereforetherainfallonthenorthbankofTaiLakewasmainlymoderate,thewindwasconcentratedaroundFung-wong’Scentercirculation.TheefectcausedbyFung—wongwaslimited.Keywords:Fung。。wong;typhoontrack;steeringflow;asymmetricstructure;northba
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