摘要
AsensitivenumericalsimulationstudyiscarriedouttoinvestigatetheeffectsofcondensationheatingandsurfacefluxesonthedevelopmentofaSouthChinaMCSthatoccurredduring23-24May1998.Theresultsrevealthefollowing:(1)CondensationheatingplaysanimportantroleinthedevelopmentofMCS.Ineverydifferentstage,withoutcondensationheating,MCSprecipitationissignificantlyreduced,andquicklydissipates.(2)CondensationheatingdemonstratesmostimportantlyduringtheearlydevelopmentstagesofMCSvortex;asthevortexdevelopsstronger,thecondensationheatingeffectsreduces.(3)ByaffectingtheMCSdevelopmentprocesses,condensationheatingalsoinfluencestheformationofMCSmesoscaleenvironmentstructurefeaturessuchaslow-leveljet(mLLJ),upper-leveldivergence.(4)Bychangingtheantecedentenvironmentalcirculation,thesurfacefluxesalsoplayanimportantroleinthedevelopmentofMCS.Becauseofthesurfaceheating,pressuredeclinesovertheheavyrainfallandMCShappeningregions,whichresultsintheintensificationofsoutherlyflowsfromtheoceanalongtheSouthChinacoastlineareas,andleadstotheenhancementofhorizontalconvergenceandincreaseofvaporamountinthelowerlayer.Allofthesemaketheatmospheremoreunstableandmorefavorablefortheconvection.
出版日期
2005年02月12日（中国期刊网平台首次上网日期，不代表论文的发表时间）
