简介：PhasecompositeanalysesareconductedtoinvestigatethepossibleeffectoftheMadden–Julianoscillation(MJO)onthespringrainfallanomaliesinEastChinabyusingtheReal-timeMultivariateMJO(RMM)indexfromAustralianMeteorologicalBureau.Theresultsshowthattherainfallanomaliesoverthemid-andlower-valleyofYangtzeRiverarepositivewhentheMJOshiftseastwardtothemid-andeastern-IndianOcean,andanomalousprecipitationoverSouthChinaarepositivewhentheMJOmovesfurthereastwardtothemaritimecontinent,whereasspringrainfallanomaliesoverEastChinaarenegativeintheotherMJOepisodes.TheMJOimpactsontheprecipitationoverEastChinaresultfromthechangesinlarge-scaleatmosphericcirculationaswellasvorticityandwatervaportransportationinthemid-andlower-troposphere.

简介：ThisstudyusesNCEP/NCARdailyreanalysisdata,NOAAoutgoinglong-waveradiation(OLR)data,thereal-timemultivariateMJO(RMM)indexfromtheAustralianBureauofMeteorologyandTibetanPlateauvortex(TPV)datafromtheChengduInstituteofPlateauMeteorologytodiscussmodulationoftheMadden-JulianOscillation(MJO)ontheTibetanPlateauVortex(TPV).Waveletandcompositeanalysisareused.ResultsshowthattheMJOplaysanimportantroleintheoccurrenceoftheTPVthatthenumberofTPVsgeneratedwithinanactiveperiodoftheMJOisthreetimesasmuchasthatduringaninactiveperiod.Inaddition,duringtheactiveperiod,thenumberoftheTPVsgeneratedinphases1and2islargerthanthatinphases3and7.Aftercompositingphases1and7separately,allmeteorologicalelementsinphase1areapparentlyconducivetothegenerationoftheTPV,whereasthoseinphase7aresomewhatconstrained.Withitseastwardpropagationprocess,theMJOconvectioncentrespreadseastward,andtheverticalcirculationwithinthetropicalatmospherechanges.Duetotheinteractionbetweenthemid-latitudeandlow-latitudeatmosphere,changesoccurinthebarocliniccharacteristicsoftheatmosphere,theavailablepotentialenergyandeddyavailablepotentialenergyoftheatmosphere,andthecirculationstructuresoftheatmosphereovertheTibetanPlateau(TP)andsurroundingareas.Thisresultsinsignificantlydifferentwatervapourtransportationandlatentheatdistribution.Advantageousanddisadvantageousconditionsthereforealternate,leadingtoasignificantdifferenceamongthenumbersofplateauvortexindifferentphases.

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简介：Thisstudyfocusesonthedecadalvariabilityoftropicalcyclones(TC)overtheWesternNorthPacific(WNP)andhowthesechangesarerelatedtotheMadden-JulianOscillation(MJO).ItwasdonewiththehelpoftheReal-timeMultivariateMJOindexfromtheAustralianGovernmentBureauofMeteorologyoftheCentreforAustralianWeatherandClimateResearch,TCdatafromtheJointTyphoonWarmingCenterbesttrackdatasets,anddailyandmonthlydatasetsfromtheNCEP/NCARreanalysiscenter.TheresultsshowthattheTCfrequencyintheWNPexhibitedastatisticallysignificantdecreaseduring1998-2010comparedtoduring1979-1997.ThedecreaseinTCfrequencyintheWNPmainlyoccurredduringMJOactivephases(i.e.,phases4,5,6,and7).FurtherinvestigationoftheclimatebackgroundandthepropagationdifferencesoftheMJObetween1979-1997and1998-2010wasperformed.TheLaNina-liketropicalseasurfacetemperaturecoolingcausedstrongerWalkercirculationandthusinducedunfavorableatmosphereconditionsforWNPTCgenesisincludingalow-leveleasterlyanomaly,anegativerelativevorticityanomaly,anincreaseinsea-levelpressure,andstrongerverticalwindshear.Moreover,shorteningoftheMJOcycle,declineinthedurationoftheactivephasesintheWNP,andeasterlyanomalyandshrinkageoftheconvectionareaduringMJOactivephasesmayalsopartlyexplainthedecadalvariationofTC.

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简介：与Zebiak藤条模型和parameterized一起强迫的intraseasonal的随机的表示，为ElNi的春天可预测性障碍(SPB)上的Madden-Jullian摆动(MJO)的无常的影响?o南部的摆动(ENSO)预言被学习。强迫的MJO的parameterized形式身体上被加到Zebiak藤条模型在与ElNi联系的SPB上获得所谓的Zebiak-Cane-MJO模型然后起始的错误，随机的模型错误，和他们的联合错误模式的效果?o预言被估计。当起始的错误能做时，结果证明强迫的随机的MJO引起的模型错误几乎不能导致重要SPB；而且，起始的错误的联合错误模式和与随机的MJO强迫联系的模型错误能也导致重要SPB。这些证明起始的错误可能是SPB的主要错误来源，它可以为ENSO预报提供数据吸收的一个理论基础。

简介：不管我们踩什么样的高跷，没有自己的脚是不行的。—德国著名戏剧家、诗人布莱希特（1898-1956）的名言第一是思考，第二是思考，第三是不能老是思考，—对年轻一代的三条建议

简介：E学习平台应用已逐渐成为传统课堂教学的重要辅助工具和课堂的有效延伸，其“教”与“学”的质量和效果如何及如何科学合理使用网络学习平台等问题备受关注。本文从分析E学习平台的特点入手，基于学生自主学习的角度，探讨E学习平台应用下“教”与“学”的实施。

简介：不管我们踩什么样的高跷，没有自己的脚是不行的。——德国著名戏剧家、诗人布莱希特（1898-1956）的名言。第一是思考，第二是思考，第三是不能老是思考．——对年轻一代的三条建议

简介：海军总医院内分泌科主治医师尚健答：血糖波动较大，往往是晚餐前血糖急剧升高。解决办法：①首先查找是否为饮食导致的高血糖；②1型糖尿病患者往往胰岛功能很差，外源补充胰岛素很难纠正血糖的漂移。建议血糖波动较大的患者可行72小时连续动态血糖监测，可以详细了解血糖波动情况，更好地指导治疗以及饮食，尤其对于夜间有无低血糖情况一目了然。

简介：无论是什么样的生命，都是竭尽全力活着自己的时间——日本电影《小狐狸海伦》中的话昨天已经过期了，今天正新鲜，别让早就过期的事情腐坏了你现在的心情。——《朵朵小语》中说

简介：丑即是美德，美即是束缚。—这是意大利小镇皮奥比科的丑人俱乐部的宣言，在小镇入口处立着一个警示牌：“即将进入丑陋区，一不小心就会碰到世界上最丑陋的人。”这个宣言堪称最有启发性的生活语录之一

简介：PossiblerelationshipsbetweenMJOandthesevererain-snowweatherinEasternChinaduringNovemberof2009areanalyzedandresultsshowthatastrongMJOprocessisoneofthestrongimpactfactors.MJOisveryactiveovertheIndianOceaninNovember2009.Especially,itmaintains9daysinMJOphase3,justcorrespondingtothetwostrongestrain-snowprocesses.CompositesofMJOeventsshowthatwhentheMJOconvectivecenterislocatedovertheIndianOcean,theprobabilityofrainfallissignificantlyincreasedandthetemperatureislowerthannormalineasternChina,whichisconsistentwiththesituationinNovemberof2009.Atmosphericcirculationanomaliesofmid-andhigher-latitudescanbeinfluencedbythetropicalMJOconvectionforcingandthisinfluencecouldberealizedbyteleconnection.WhentheMJOisovertheIndianOcean,itisfavorableforthemaintenanceofacirculationpatternoftworidgesversusonetroughatmid-andhigher-latitudes.Meanwhile,thewesternPacificsubtropicalhighisstrongerandmorewestwardthannormal,andasignificantconvectivebeltappearsovereasternEastAsia.AllthesecirculationanomaliesshowninthecompositeresultalsoappearedintheobservationsinNovember2009,whichindicatesthegeneralfeaturesofrelationshipsbetweentheMJOandthecirculationanomaliesovertheextratropics.Besidesthezonalcirculationanomalies,theMJOconvectioncanalsoleadtomeridionalcirculationanomalies.WhentheMJOconvectionislocatedovertheIndianOcean,thewesternPacificisdominatedbyanomalousdescendingmotion,andtheeasternEastAsiaiscontrolledbystrongconvergenceandascendingmotion.Therefore,ananomalousmeridionalcirculationisformedbetweenthetropicsandmiddlelatitudes,enhancingthenorthwardtransportationoflow-levelmoisture.Itispotentiallyhelpfultounderstandingandevenforecastingsuchkindofrain-snowweatheranomaliesasthatinNovember2009usingMJO.

简介：元旦快到来的时候,我选购了一套"重庆之夜"明信片,分别寄给了几位多年不见的外地朋友,以表新年的祝贺。没想到老朋友大杨却来信说我还老土,都什么年代了,还寄这种明信片,大杨在信中留下E-mail地址,要我以后给他发电子邮件。我读了信也笑自己"老土",现在

简介：2009年2月底，法国贝雷特·拉科佩鲁游艇设计公司（BerretRacoupeauYachtDesign）对外公布了该公司成立以来的第一款设计，长达100英尺的环保型双体帆船——Code[e]。

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简介：上期讲到,小雄他们穿过暗道来到了一个大厅,大厅里的景象让众人目瞪口呆!这时,一向不讨人喜欢的西单不知被什么东西叮了一下,便神色恍惚地离开了众人……