简介：本文介绍WINDS地面应用系统中组成，网管中心和各类终端的工作原理，设计理念，使读者对宽带卫星通信系统的地面应用系统有一个初步的了解。

简介：Byanalysisofobservationdata,thispaperdemonstratesthatpollutionparticlescouldreducesurfacewindspeedthroughblockingsolarradiationtotheground.ThecomparationbetweentemperatureatthelowlandmeteorologicalstationXi’anandthatoverthenearbyhighlandstationMt.HuasuggeststhatsurfacesolarradiationatXi’anisreducedduetotheincreasinganthropogenicaerosols.Thereducedsurfaceenergysuppressestheatmosphericinstabilityandconvectiveflows,andthusthedownwardtransferoffasterwindsaloftisreduced.Consequently,windspeedsnearsurfaceareweakened.Thisreductionofsurfacewindsisshownbythesignificantreversetrendsofwindspeedsoverthetwostationsatdifferentelevations.Theaerosols’effectsonwindsarealsomanifestedinthetrendsofradionsondewindspeed.ThedecreasedsurfacewindsinXi’anhavealsoreducedlocalpanevaporation.

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简介：Inthepresentstudy,astatisticalinvestigationiscarriedouttoexplorewhetherthereisarelationshipbetweenthecriticalfrequency(foEs)ofthesporadic-ElayerthatisoccasionallyseenontheEregionoftheionosphereandthequasibiennialoscillation(QBO)thatflowsintheeast–westdirectionintheequatorialstratosphere.Multipleregressionmodelasastatisticaltoolwasusedtodeterminetherelationshipbetweenvariables.Inthismodel,thestationarityofthevariables(foEsandQBO)wasfirstlyanalyzedforeachstation(CocosIsland,Gibilmanna,NiueIsland,andTahiti).Then,acointegrationtestwasmadetodeterminetheexistenceofalong-termrelationshipbetweenQBOandfoEs.Afterverifyingthepresenceofalong-termrelationshipbetweenthevariables,themagnitudeoftherelationshipbetweenvariableswasfurtherdeterminedusingthemultipleregressionmodel.Asaresult,itisconcludedthatthevariationsinfoEswereexplainablewithQBOmeasuredat10hPaaltitudeattherateof69%,94%,79%,and58%forCocosIsland,Gibilmanna,NiueIsland,andTahitistations,respectively.ItisobservedthatthevariationsinfoEswereexplainablewithQBOmeasuredat70hPaaltitudeattherateof66%,69%,53%,and47%forCocosIsland,Gibilmanna,NiueIsland,andTahitistations,respectively.

简介：马青暂停桥的动态回答和在狂暴的风行动下面的桥上的火车的跑的行为被一个三维的wind-train-bridge相互作用模型分析。这个模型由一个空间有限元素桥模型，组成一个火车模型八4轴创作了27degrees-of-freedom的相同教练，和狂暴的风当模特儿。包括buffeting力量和自我刺激的力量，波动的风力量仅仅对桥起作用，自从火车在桥甲板内跑。桥的动态回答被计算，一些结果与从台风约克测量的数据相比。以不同速度通过马青暂停桥的火车的runnability与不同的风速度在狂暴的风下面被研究。然后，为在桥甲板保证火车的跑的安全的风速度的阀值曲线被建议，从哪个在不同的风速度的许可的火车速度能被决定。当吝啬的风速度到达30m/s，数字结果证明马青暂停桥上的栏杆交通应该被关上。关键词马青桥牌-狂暴的风-动态相互作用-运用安全-阀值-旁边支持的风速度：不到资助号码90715008的中国的国家自然科学基础，50838006；为在资助号码2009JBM078下面的中央大学的基本研究资金

简介：Fieldmeasurementofstrongwindcharacteristicsisofgreatsignificanceforthedevelopmentofbridgewindengineering.LocatedineastChina,theRunyangSuspensionBridge(RSB)withamainspanof1490misthelongestbridgeinChinaandthethirdlongestintheworld.Duringthelastfouryears,theRSBhassufferedfromtyphoonsandstrongnorthernwindsonmorethantenoccasions.TodeterminethestrongwindcharacteristicsoftheRSB,windmeasurementdataobtainedfromfieldtestsduringstrongwindsanddatafromthewindenvironmentmonitoringsubsystemofthestructuralhealthmonitoringsystem(SHMS)oftheRSBwerecombinedtoanalyzethewindspeedanddirection,variationinwindspeedwithheight,turbulenceintensity,turbulenceintegrallength,windfrictionspeedandthepowerspectrum.Comparativestudiesonthecharacteristicsofthesedifferentstrongwindswerecarriedoutbasedonthecurrentwind-resistantdesignspecificationforhighwaybridges.ResultsshowedthatsomeregularityinwindcharacteristicscanbefoundinthesedifferenttyphoonspassingthroughtheRSB.Thedifferencebetweenastrongnorthernwindandatyphoonisrelativelyclear,andinsummerthetyphoonisthedominantwindloadactingontheRSB.Inaddition,thereweresomedifferencesbetweenthemeasuredstrongwindcharacteristicsandthevaluessuggestedbythespecification,especiallyinrespecttoturbulenceintensityandturbulenceintegrallength.ResultsprovidemeasurementdataforestablishingastrongwindcharacteristicdatabasefortheRSBandfordeterminingthestrongwindcharacteristicparametervaluesofthiscoastalareaineastChina.

简介：AnalgorithmforcomputationofcloudmotionwindshasbeendevelopedattheNationalSatelliteMeteorologicalCenterinChina.Since1997,ithasbeenappliedtocalculatethecloudmotionwindsfora1.25lat.×1.25long.meshoverthenorthwestPacificregionwiththesatellitedatafromGMS-5.Thedevelopmentofthetropicalcyclonesisstudied.Itshowsthatthetropicalcycloneisusuallyintriguedbythewesterlyjetstreamsattheupperlevelsofthetroposphere,whichmaybecausedbymid-latitudetroughswellextendingintothetropics.Duringtheprimeseasonofsummer,thewesterlyflowingequatorwardoftheTUTTmayalsobeacauseforthegenerationoftyphoons.

简介：Meansealevelriseandclimatologicalwindspeedchangesoccuraspartoftheongoingclimatechangeandfutureprojectionsofbothvariablesarestillhighlyuncertain.HeretheBalticSea'sresponseinextremesealevelstoperturbationsinmeansealevelandwindspeedsisinvestigatedinaseriesofsimulationswithanewlydevelopedstormsurgemodelbasedonthenucleusforEuropeanmodelingoftheocean(NEMO)-Nordic.Asimplelinearmodelwithonlytwotunableparametersisfoundtocapturethechangesinthereturnlevelsextremelywell.Theresponsetomeansealevelriseislinearandnearlyspatiallyuniform,meaningthatameansealevelriseof1mincreasesthereturnlevelsbyaequalamounteverywhere.Theresponsetowindspeedperturbationsismorecomplicatedandreturnlevelsarefoundtoincreasemorewheretheyarealreadyhigh.ThisbehaviourisalarmingasitsuggeststhatalreadyfloodingproneregionsliketheGulfofFinlandwillbedisproportionallyadverselyaffectedinafuturewindierclimate.

简介：ThestatisticalcharacterofQuikSCATscatterometerwindsisshowed.AndMonthlychangeandspecialdistributioncharacterofstrongwindfrequencyandmonthlywindfieldsinSouthChinaSeaisanalyzed.ItisshownintheresultthattheQuikSCATscatterometerwindscanberelieduponfortheSouthChinaSea;twowinds,onethewintertimenortheasterlyandtheothersummertimesouthwesterly.ThenortheasterlycentersattheBashiStraitandTaiwamStraitanditssecondarycenterandthemaximumcenterofthesouthwesterlyareinthecentralandsouthernSouthChinaSea.

简介：Theresultsfromahybridapproachthatcombinesamesoscalemeteorologicalmodelwithadiagnosticmodeltoproducehigh-resolutionwindfieldsincomplexcoastaltopographyareevaluated.Thediagnosticwindmodel(CaliforniaMeteorologicalModel,CALMET)with100-mhorizontalspacingwasdrivenwithoutputsfromtheWeatherResearchandForecasting(WRF)modeltoobtainnear-surfacewindsforthe1-yearperiodfrom12September2003to11September2004.Resultswerecomparedwithwindobservationsatfoursites.Traditionalstatisticalscores,includingcorrelationcoefficients,standarddeviations(SDs)andmeanabsoluteerrors(MAEs),indicatethatthewindestimatesfromtheWRF/CALMETmodelingsystemareproducedreasonablywell.Thecorrelationcoefficientsarerelativelylarge,rangingfrom0.5to0.7forthezonalwindcomponentandfrom0.75to0.85forthemeridionalwindcomponent.MAEsforwindspeedrangefrom1.5to2.0ms-1at10metersabovegroundlevel(AGL)andfrom2.0to2.5ms-1at60mAGL.MAEsforwinddirectionrangefrom30to40degreesatbothlevels.AspectraldecompositionofthetimeseriesofwindspeedshowspositiveimpactsofCALMETinimprovingthemesoscalewinds.Moreover,combiningtheCALMETmodelwithWRFsignificantlyimprovesthespatialvariabilityofthesimulatedwindfields.ItcanbeconcludedthattheWRF/CALMETmodelingsystemiscapableofprovidingadetailednear-surfacewindfield,butthephysicsinthediagnosticCALMETmodelneedstobefurtherimproved.