简介：Therelationshipbetweentheauroralovalpattern,i.e.,location,size,shape,andintensity,andtheauroralelectrojetactivityindex(AEindex)isstudied.Itisfoundthatthemaximalauroralintensityisellipticallydistributed,andthelengthsofsemimajorandsemiminoraxesarepositivelycorrelatedtoAE.TheintensityalongthenormaloftheauroralovalcanbesatisfyinglydescribedbyaGaussiandistribution,andthemaximumandthefullwidthathalfmaximumoftheGaussiandistributionarebothpositivelycorrelatedtoAE.Basedonthesestatisticalresults,aseriesofexperimentalformulasasafunctionofAEaredevelopedtocalculatethelocation,size,shape,andintensityoftheauroraloval.TheseformulasarevalidatedbytheauroralimagesreleasedbySWPC/NOAA.

简介：在空气描述mesoscale旋涡的不安方程的稳定的分析答案被获得。由分析3D风领域，在为不稳定的层化的物理空间的3D螺线结构被发现。在象压力和涡度地的3D分发那样的许多方面，mesoscale螺线旋涡很类似于典型地真实的气旋。关键词螺线tructure-气旋-动态系统为教育部的博士车站在非线性的科学和资金上由州的关键研究工程支持了的3D，中国。

简介：StormsthatoccurattheBayofBengal(BoB)areofabimodalpattern,whichisdifferentfromthatoftheotherseaareas.ByusingtheNCEP,SSTandJTWCdata,thecausesofthebimodalpatternstormactivityoftheBoBarediagnosedandanalyzedinthispaper.TheresultshowsthattheseasonalvariationofgeneralatmospherecirculationinEastAsiahasaregulatingandcontrollingimpactontheBoBstormactivity,andthe'bimodalperiod'ofthestormactivitycorrespondsexactlytotheseasonalconversionperiodofatmosphericcirculation.Theminorwindspeedofshearspringandautumncontributedtothestorm,whichwasacrucialfactorforthegenerationandoccurrenceofthe'bimodalpattern'stormactivityintheBoB.Theanalysisonseasurfacetemperature(SST)showsthattheSSTsofalltheyeararoundintheBoBareameettheconditionsrequiredforthegenerationoftropicalcyclones(TCs).However,theSSTsinthecentralareaofthebayarehigherthanthatofthesurroundingareasinspringandautumn,whichfacilitatestheoccurrenceofa'two-peak'stormactivitypattern.Thegenesispotentialindex(GPI)quantifiesandreflectstheenvironmentalconditionsforthegenerationoftheBoBstorms.ForGPI,theintenselow-levelvortexdisturbanceinthetroposphereandhigh-humidityatmospherearethesufficientconditionsforstorms,whilelargemaximumwindvelocityofthegroundvortexradiusandsmallverticalwindsheararethenecessaryconditionsofstorms.

简介：基于地面的云分类由于在在不同大气的条件下面的云的外观的极端变化是挑战性的。质地分类技术最近被介绍了处理这个问题。一个新奇质地描述符，突出的本地二进制模式(SLBP)，为基于地面的云分类被建议。SLBP利用最经常发生的模式(突出的模式)捕获描述的信息。这个特征使SLBP柔韧到噪音。用基于地面的云图象的试验性的结果证明建议方法能比当前的最先进的方法完成更好的结果。

简介：Theeffectoflocalbasicflowstructurepattern(BFSP)onablockinghighformationisinvestigatedwithintheframeworkofforceddissipationKDVdynamics.Thezonalandmeridionalpositionsofthehigh’scenterexcitedbyaheatsourcedependontheBFSPselected.

简介：Limitationsofdifferencemapsshowingcirculationanomaliesareanalyzed,andthedefinitionofthelocalpatternanaloguecoefficient(LPAC)isgiventogetherwiththeprocedureforconstructingsuchamap,followedbyanexampleillustratingitsusefulapplicationincirculationanomaly.

简介：许多有缺点的雷达回响可以用雷达数据应用，特别雷达数据吸收和量的降水估计引起严重问题。在这研究，测试模式在CINRAD(中国新一代天气雷达)由测试信号或雷达硬件失败引起了SA和SB雷达运作的观察被调查。为了把测试模式与雷达回响的另外的类型区分开来，例如降水，清除空气和另外的非气象学的回响，包括有效反射率数据百分比(RZ)的五个特征参数，速度RF(合拢的范围)数据百分比(RRF)，失踪的速度数据百分比(RM)，平均沿着方位角反射率变化$\left({R_{N_{r，Z}}}\right)$并且平均沿着横梁反射率变化$\left({R_{N_{一，Z}}}\right)$被建议。基于模糊逻辑方法，一个测试模式鉴定算法被开发，并且从雷达回响的所有不同类型的统计结果显示算法的表演。有在测试模式内定位的重降水回响的二个典型箱子的分析被执行。统计结果证明测试模式鉴定算法表现很好，自从测试模式在大多数情况中被认出。而且，算法能有效地移开测试模式信号并且在重降雨事件保留强壮的降水回响。

简介：Bymeansofsimulationexperimentswithatwo-dimensionalzonal-meanmodel,astudyismadeoftheinfluenceofthewesternNorth-Pacificmidlatitudesea-surfacetemperature(SST)anomaliesonthecirculationpatternandwet-seasonalprecipitationovertheEast-ChinaChangjiang-HuaihereachesandtheNorth-Chinaplain.TheSSTanomaliesaredividedintotwotypes,onebeing“colderinthesouthandwarmerinthenorth”andtheotherjustopposite,dependingonseason.Resultsshowthattheoccurrenceoftheanomaliesisfollowedbyconsiderablechangesinthepositionofthesubtropicalhighhappeningfor3-5monthstocome.Forinstance,thespring“colderinthesouthandwarmerinthenorth”anomaloustype(i.e.,colderfor20—35°N,andwarmernorthof35°N)leadstotheintensificationofthesummersubtropicalhigh,withtheridgelinemovedslightlynorthward,resultingindroughtoverChangjiangreachesforJuly-AugustandinexcessiverainfallintheNorth-Chinaplain,andviceversa.

简介：在3月16-17,2008日，海雾在广东省的西方在Dianbai发生了并且被高压的摘要的system.Using伴随全面观察数据集，这研究在这海雾期间分析液体水内容的进化并且调查海雾显示出的在液体水内容和平均直径和主要结果表现为的exchanges.The跟随的雾微滴，空气温度，风速度和骚乱的计数密度(1)之间的关系伪每

简介：Earlyproxy-basedstudiessuggestedthattherepotentiallyoccurreda"southerndrought/northernflood"(SDNF)overEastChinainthemid-Holocene(fromroughly7000to5000yearsbeforepresent).Inthisstudy,weusedbothglobalandregionalatmosphericcirculationmodelstodemonstratethattheSDNF—namely,theprecipitationincreasesoverNorthChinaanddecreasesoverthethelowerreachesoftheYangtzeRiverValley—couldhavetakenplaceinthemid-Holocene.WefoundthattheSDNFinthemid-HolocenewaslikelycausedbythelowerSSTinthePacific.TheloweredSSTandthehigherairtemperatureovermainlandChinaincreasedtheland–seathermalcontrastand,asaresult,strengthenedtheEastAsiansummermonsoonandenhancedtheprecipitationoverNorthChina.