简介：ＡＣＨＡＲＡＣＴＥＲＩＳＴＩＣＡＮＡＬＹＳＩＳＯＦＡＥＲＯＳＯＬＳＦＲＯＭＳＡＮＤＳＴＯＲＭＳＹａｎｇＤｏｎｇｚｈｅｎ（杨东贞），ＷａｎｇＣｈａｏ（王超）ａｎｄＹｕＸｉａｏｌａｎ（于晓岚）ＩｎｓｔｉｔｕｔｅｏｆＡｔｍｏｓｐｈｅｒｉｃＣｈｅｎｍｉｓｔｒ...

简介：Derechos经常发生在欧洲和美国，而是在中国的derechos的报告是少见的。在这份报纸，雷达，卫星，和表面观察，数据被用来在2011年4月17日在华南分析一个derecho事件。对流系统与中等对流可得到的精力在环境形成了的生产derechomesoscale，大垂直的风砍，并且在中间的对流层的干燥的层，并且进行与前面和一根表面风集中线一起向南方。暴风能在雷达回响的特征和强风的原因根据差别被划分成二个阶段。一个阶段是一个supercell阶段，有塑造鞠躬的雷达回响的高降水的supercell的下沉后面的流入在导致了FujitaF0班强风。另外的阶段是一个non-supercell阶段(回响是顺序肾形的，塑造脚，并且一个平常的单个房间)，在哪个downbursts在FujitaF1班上导致了强风。这个derecho事件有许多类似，derechos在西方的国家观察了。例如，暴风对吝啬的流动垂直，强风位于鞠躬回响的鼓起的部分，并且derecho移动了与表面前面一起向南方。一些差别也被观察。摘要规模的强迫当进展不在时是弱的高振幅的midlevel马槽并且伴随强壮的表面气旋；然而，垂直的风砍是很强壮的，典型地代表与强壮的摘要规模的强迫联系的derechos的一个特征。对流可得到的势能以前被认为必要到弱强迫的原型和混合derechos的形成的对流可得到的势能和downdraft的极其高的价值；然而，这些价值多不到2000J在这个derecho事件期间。

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简介：不同于在行星的边界层的风骚乱光谱上的以前的研究，这调查集中于高高度(15km)在各种各样的天气下面的风精力光谱和骚乱光谱调节。快Fourier变换(快速傅里叶变换)被用来基于风介绍在高高度(15km)计算风精力和骚乱光谱密度雷达(WPR)大小。在在高高度的稳定的天气条件下面的骚乱光谱在2的一个频率范围以内在力量被表示吗？？

简介：WepartitiontheobservedwindfieldintorotationalanddivergentwindfieldstoanalyzethestreamfieldofTy-phoonPolly(No.9216),whichlandedon31August1992andcausedsevereweatherandlargedamageintheeasternChina.Theresultsindicatethatthepreservationoftyphoonintensityafterlandingandtheheavyrainfalltookplaceonthenorthernperipheryoftyphoonareduetothestrongdivergentwindsontheregionsoflowleveljet(LLJ)andhighleveljet(HLJ)aroundthetyphoon.ThedirectionofdivergentwindsintheLLJisperpendiculartotheobservedwind.But,thedirectionofdivergentwindsaroundtheHLJaxisisparalleltotheobservedwinds.Thestreamfunctionandtherotationalwindcorrespondingtothehorizontalvorticitydisplaytheverticalcirculationassociatedwiththeheavyrain,whichisstrongerthantheverticalcirculationaroundthetyphooncenter.Thethree-dimensionaltrajectoriesexhibitthewarmandmoistairparcelsofLLJtravelingnorthwardintotheheavyrainfallregionandascending,thenturningeastwardintheHLJ.

简介：Monthlymeansurfaceairtemperaturesandprecipitationat20meteorologicalstationsintheJinshaRiverValley(JRV)ofsouthwestChinawereanalyzedfortemporal-spatialvariationpatternsduringtheperiod1961-2010.ThemagnitudeofatrendwasestimatedusingSen’sNonparametricEstimatorofSlopeapproach.ThestatisticalsignificanceofatrendwasassessedbytheMKtest.Theresultsshowedthatmeanannualairtemperaturehasbeenincreasingby0.08℃/decadeduringthepast50yearsasawhole.Theclimatechangetrendinairtemperaturewasmoresignificantinthewinter(0.13℃/decade)thaninthesummer(0.03℃/decade).Annualprecipitationtendedtoincreaseslightlythereafterandtheincreasingwasmainlyduringthecrop-growingseason.Boththegreatestvariationoftheannualmeantemperatureandannualprecipitationwereobservedatthedry-hotvalleyareaofmiddlereaches.Significantwarmingrateswerefoundintheupperreacheswhereasthedry-hotbasinsofmiddlereachesexperiencedacoolingtrendduringthepastdecades.Despiteoftheoverallincreasinginprecipitation,moreobviousupward-trendswerefoundinthedry-hotbasinsofmiddlereacheswhereastheupperreacheshadadroughttrendduringthepastdecades.

简介：UsingthemethodofSingularSpectrumAnalysis(SSA),theevolutionregularityoftropicalcycloneslandinginGuangdongareanalyzed.ThemainperiodsofyearlytopicalcycloneslandinginGuangdongarefoundat8andquasi-3years,andinthewestofPearlRiverMouthare12andquasi-2yearstothewestofPearlRiverMouth.ThenorthwestPacificthattopicalcyclonesaregeneratedisdividedinto8areas,andtheSea-SurfaceTemperature(SST)ineachareaisanalyzedusingSSA.ThemainperiodsofNINO-westare8and3years,andthoseofthewarmpoolare12and2years,respectively.ThismaybethephysicalreasonforthegenerationtropicalcycloneslandinginGuangdong.BycombiningtheMaximumEntropyMethod(MEM)withSSA(SSA-MEM),theyearlyvariationtrendoftropicalcycloneslandinginGuangdongandthePearlRiverMouthareforecast,andtheresultsaregood.Themethodcanbeusedinoperationalshort-rangeclimateforecast.

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简介：ＭｕｌｔｉｖａｒｉａｔｅＯｂｊｅｃｔｉｖｅＡｎａｌｙｓｉｓｏｆＷｉｎｄａｎｄＨｅｉｇｈｔＦｉｅｌｄｓｉｎｔｈｅＴｒｏｐｉｃｓＳ．Ｋ．Ｓｉｎｈａ，Ｓ．Ｇ．ＮａｒｋｈｅｄｋａｒａｎｄＳ．Ｒａｊａｍａｎｉ（ＩｎｄｉａｎｉｎｓｔｉｔｕｔｅｏｆＴｒｏｐｉｃａｌ...

简介：2004台风Aere的降水的结构的特征从测量国家航空学空间管理(NASA)的使命(TRMM)的热带降雨用高分辨率的数据被分析。台风的特征在它的发展的不同阶段变化，这被发现。分析降水分发的不对称的引起，从环境预言(NCEP)分析的国家中心的数据被用来计算水蒸汽流动向量的垂直积分。因为这个过程，结果显示出那，与成双台风的循环的唯一的现象一起，在东方台风的北方面的空气电流和它的南部的方面的西南的空气水流在搬运水起一个联合作用蒸汽。而且，它的运输效果在开发的不同阶段极大地变化，显示出为这台风进程的水来源的怪癖。由重降水和水蒸汽流动的一个最大值的区域描绘区域的台风传送对流的分布，以及在台风的发展的不同阶段的强壮的上升运动区域不同。水蒸汽流动和垂直运动的不一致的分发引起台风降水的不均匀的分发。

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简介：在这篇论文，关于亚洲热带夏天季风(ATSM)的发作的相对系统的climatological研究被执行。基于ATSM发作，ATSM最新被献殷勤的全部的然后ATSM第一爆发在热带东方印度洋和中间、南部的印度支那半岛上的看法的一个统一索引进一步被记录，它在第26五(关于5月10日)，然后在在第28五的华南海(SCS)上。看起来，在二个区域上的ATSM发作属于一样的季风系统的不同阶段。然后，ATSM的发作机制被全面分析进一步在陆地海上调查热力学的对比，intraseasonal摆动，等等并且影响ATSM发作的几个关键因素被提出。把结果基于这些，大气的发行量的ATSM第一爆发在热带东方印度洋，印度支那半岛，和SCS上的图解的地图也是的可能的climatological介绍的、也就是季节的进化是季风发作的背景；改进并且向北方在印度支那半岛和它的附近的区域上的传送对流，理智的加热并且潜伏的加热进展，在东方西藏的高原上的印度缅甸马槽，和西的温暖的移流的戏剧的加深是夏天季风发作的主要驱动力，它做了区域和上升运动开发的在这上第一反向的温度的南方的坡度。然后，热带季风和降水很快发展了并且提高。30-60-day和10-20-day的阶段锁低频率摆动从不同来源发源是为夏天季风发作的另一个被触发的因素。它只是最早导致了ATSM的这些因素的普通效果在这个区域上的发作。

简介：ＴＨＥＭＥＡＳＵＲＥＭＥＮＴＡＮＤＡＮＡＬＹＳＩＳＯＦＡＮＴＡＲＣＴＩＣＯＺＯＮＥＡＴＺＨＯＮＧＳＨＡＮＳＴＡＴＩＯＮＯＦ１９９３ＺｈｏｕＸｉｕｊｉ（周秀骥），ＬｕＬｏｎｇｈｕａ（陆龙骅），ＺｈｅｎｇＸｉａｎｇｄｏｎｇ（郑向东）ａｎｄＧｕｏＳｏｎｇ（...

简介：ＡＮＡＬＹＳＩＳＯＦＭＥＡＮＷＩＮＤＣＨＡＲＡＣＴＥＲＩＳＴＩＣＳＩＮＴＨＥＡＴＭＯＳＰＨＥＲＩＣＳＵＲＦＡＣＥＬＡＹＥＲＯＦＴＨＥＧＲＡＳＳＬＡＮＤＡＲＥＡＩＮＮＯＲＴＨＣＨＩＮＡＸｕｅＨｅｎｇ（薛桁），ＺｈｕＲｕｉｚｈａｏ（朱瑞兆）ａｎｄＷｕＨｏ...

简介：Tohaveaclearerpictureofmechanismsresponsibleforthedeviationoftropicalcyclone(tobesimplifiedasTChereafter)tracks,thecurrentworkassumestheTCasacircularvortexwitharadiusofR.AgeneralmotionequationofTCisthendeterminedbyaveragingitshorizontalmotionequationoverthesentireregionofTC.Inthemeantime,withthemovingtrackofTCassumedasacharacteristicarc,thecurvatureequationisderivedforthetrackofmovementandpatternsofitsdeviationduetoTCstructureandvariationarediscussed.Theresultshowsthatthescale,size,maximumwindspeedandradiusarefactorscausingthedeviationofTCtracks.Inaddition,asymmetricstructureofTCisalsoimportantforthedeviationoftracks.Theresults,achievedwithhypothesis,agreewithfactsinsomecasesbutdisagreewiththeminothers,whicharetobeverifiedwithmoreobservationsornumericalsimulations.

简介：AnumericalsimulationofatorrentialraineventoccurringintheJiang-HuaiValleyofChinafrom22-24June1999isperformedandanalyzedbyusingthePSU/NCARMM5mesoscalenon-hydrostaticmodel.Thehigh-resolutionmodeloutputdataareutilizedtodiagnosethedoublefrontstructure,andthedistributionsofpotentialtemperature,equivalentpotentialtemperature,andspecifichumidityinthevicinityoftheMeiyuFrontSystem(MYFS)intheJiang-HuaiValley.TheresultsshowthatboththepotentialtemperaturegradientandthespecifichumiditygradienthaveimportantimpactsonthetwostrongequivalentpotentialtemperaturegradientzonesassociatedwiththedoublefrontstructureoftheMYFS,butthelatter(moisturegradient)ismoreimportant.Inaddition,thetendencyequationofspecifichumiditygradientistheoreticallyderived.Itshowsthatvariationsofthespecifichumiditygradientarerelatedtotheadvection,convergence/divergence,horizontalandverticalvorticities(secondarycirculation)effectsandthegradientofwatervaporsource/sink.Asanexample,thebudgetofthemeridionalcomponentofthetendencyequationisselectedanddiagnosedbyusingtheabovemodelsimulationdataofthetorrentialrainevent.Itisshownthatthevariationofthespecifichumiditygradientaveragedthroughoutthesimulationismainlycontrolledbytheconvergence/divergenceeffect,thesecondarycirculationeffectassociatedwiththehorizontalvorticities,andthewatervaporsource/sinkeffect.Sincethewatervaporsource/sinkisoftenformedfromthephasechangeprocessesofwatervaporintheairandthusdirectlyassociatedwithcloudandprecipitationmicrophysicsprocesses,thevariationofthespecifichumiditygradientiscloselyrelatedwithcloudandprecipitationmicrophysicsandthedistribution,developmentandevolutionofcloudandrainfallsystems.ThedoublefrontstructureoftheMYFSprovidesanadvantageousenvironmentalconditionforthedevelopmentandmovementofthemesoscaletorrentialrain

简介：在过去几年，乍见陆地并且轨道，紧张，支撑热带气旋的机制(此后TC)并且联系天气变化变得加热了研究的话题。从精力转变，潮湿转移，中间纬度的baroclinicfrontal地区和周围的风领域的观点，陈等。Le等。并且Zengetal。学习了乍见陆地做了的TC的支撑的机制。李等。另外指出TCsduring转变的增强与骚乱并且向下被联系在TC附近的high-levelpotential旋涡，低级锋带和低压的循环的交通，在解释以后，在TC的差别转移跟随湿潜在的旋涡的理论。

简介：一个小浪方法被使用在每日的气象学的系列检测不同类，逐渐地正在被使用在的数据气候极端学习。小浪方法被用于一些生长得很好的长期的每日的温度系列回到第18世纪，它与常规途径被“一致”。留在系列的问题的各种各样的类型与小浪方法被揭示。他们对在气候极端的变化的分析的影响被讨论。结果有重要性让在常规气候数据处理理解问题以便基于每日的数据改进气候极端的分析。

简介：AheavystormrainfallcausedbyTyphoonAere(No.0418)whenlandingatFujianhasbeensuccessfullysimulatedbyusingAREMmodel.Thesimulationresultisscale-separatedbyspatialband-passfiltering,whichrevealsthemesoscalelowpressureandconvergencelinethathasdirectimpactonthisrainfallprocess.Thephysicalcharacteristicsofthetwomesoscalesystemsandtheirrelationwithrainfallarealsoanalyzed.Studyshowsthatthereexistsawellcorrespondingrelationshipbetweenthestormrainfallandmesoscaledivergenceandstrongupdraftarisingfromtheconvergence,whichiscausedbytheinteractionsbetweenthemesoscalesystemsandtopographicfeatures,andisdirectlyresponsiblefortherainfall.

简介：Thewintersof1997/1998and1998/1999,correspondingtoElNi(?)oandLaNi(?)aepisodes,respectively,weretwotypicalrain-abundantand-scarceseasonsforthesouthernChina.Inordertounderstandthecauseoftheanomalousprecipitationduringthetwowinters,acomparativeanalysistechniquehasbeenemployedtoinvestigatethedifferencesingeneralcirculationandmoisturetransportationbetweenthetwoseasons.Theresultsshowthattheabundantrainfallduringthewinterof1997/1998wasassociatedwiththeENSOwarmepisodeevent,eastwardshiftedweakwesterlytrough/ridge,weakenedEastAsianwintermonsoon(EAWM),strengthenedsubtropicalhigh,andpresentedtwoanti-cycloniccirculationsoverHokkaidoandthePhilippineSea,respectively,aswellasonecycloniccirculationovertheYangtzeRiverBasinintheanomalouswindfieldsofthelowertroposphere.Duringtherain-scarcewinter,however,thepatternsofequatorialseasurfacetemperatureanomaliesandthecirculationsystemsbothinupperandlowerlevelswerenearlytheoppositeofthoseduringtherain-abundantwinter.IthasalsobeendiscoveredthatthewatervaporoversouthernChinaduringthewinterscamemainlyfromthesouthwesterlyflowaheadoftroughsinthesouthernbranchofwesterliesandtheturningflowovertheSouthChinaSea-Indo-ChinaPeninsulaarea;andthemoisturetransportationchannelsvariedsignificantlywithregardtoheight.Theintensifiedflowinthesouthernbranchofwesterliesandtheanti-cycloniccirculationanomalyoverthePhilippineSeaduringthewinterof1997/1998werefavorableformoisturetransportationtomainlandChina,howeverthetwomoisturetransportationstreamsweredramaticallyweakenedduringthewinterof1998/1999duetoweakwesterlyflowandthedominanceofacoldhighsysteminthelowerleveloverthesoutheastcoastofChina.Suchasignificantinter-annualchangeofmoisturetransportationisakeyfactorresultingintheobviousdifferenceinprecipitationbetweenthetwowinters.