简介:作为要学习的区域拿欧洲的主要陆地,新卫星重力技术的潜力:追踪的satellite-to-satellite(SST)并且与SST模型一起改进地区性的重力场模型的精确性被调查。这些模型的缺点被讨论。与是的GPM98C参考,几个另外的模型,的严肃异例剩余最近的SST全球重力场模型(EIGEN系列和GGM系列),被计算并且比较。在选择区域,有期刊性质的一些系统的错误在EIGEN和GGM存在的比较表演的结果是在高度和顺序的S系列模型。没在经典严肃模型被显示出的一些信息在EIGEN和GGM的S系列模型的低、中间的度和顺序被检测。最后,SST模型的有效的最大的度和订单被建议。
简介:为测试作为这个区域拿中国,新卫星严肃技术的潜力,为改进地区性的重力场模型的精确性追踪的satellite-to-satellite被学习。与是的WDM94引用,三个模型,的严肃异例剩余最近二个优雅全球重力场模型(EIGEN_GRACE02S,GGM02S)并且EGM96,被计算并且比较。为在三个模型的剩余之中的差别的原因被讨论。在剩余之间的Thecomparison证明在选择区域,EIGEN_GRACE02S或GGM02S比在更低的度部分(不到110度)的EGM96好。通过模型严肃异例剩余的分析,另外,有期刊性质的一些系统的错误在EIGEN和GGM模型,的更高的度部分存在,这被发现结果能也在SST严肃数据的确认作为引用被拿。
简介:CHAOTICOUTPUTOFSSTFLUCTUATIONSTOCHASTICMODELWITHGIVENPARAMETERS¥YanShaojinandPengYongqing严绍瑾,彭永清(NanjingInstituteofMeteorolog...
简介:SpatialandtemporaldistributioncharacteristicsandscalerangeoftwosignificantareaswereobtainedbyanalyzingtherelationshipamongsummerrainfallinYunnanprovince,heightfieldandSSTfield(40°S-40°N,30°E-70°W)acrosstheNorthHemisphereat200hPa,500hPaand850hPaforJan.toMayandcorrelation,andfieldwavestructure.RemotekeyregionsamongsummerrainfallinYunnanprovince,heightfieldandSSTfield(40°S-40°N,30°E-70°W)acrosstheNorthHemisphereat200hPa,500hPaand850hPawerestudiedthroughfurtheranalyzingofthecirculationsystemanditsclimate/weathersignificance.TheresultshowsthattheforecasthasdependablephysicalbasiswhenheightandSSTfieldswereviewedaspredictorsandphysicalmodelsofimpactsonrainyseasonprecipitationinYunnanarepreliminarilyconcluded.
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:BasedontheSSTandwavedataobservedbyvesselspassingthroughtheNanshaIslandswaters,thispaperanalysesElNinoevent’seffectonhydrologicalfactorsintheabovewaters.Thepaperconcludes(1)SSTintheNanshaIslandswatervarieswiththatoftheEasternEquatorialPacificOceaninsynchronousphase,butvarieswiththatoftheWesternEquatorialPacificOceaninoppositephase;(2)theseastateinNanshaIslandswatersisrough,thefrequencyofgreatwaveincreasesintheyearofElNino,especiallyinthenextyearoftheyearofElNino.Thepaperdiscussesthereasonsfortheabovephenomena.
简介:动态、数字的方法被用来热强迫讨论大气的反应到SST。结果表演为行星的规模系统,热强迫能快速激动的站的SST稳定的大气的平衡状态回答,它被明显的大规模电视连接摆动在东方西方和南方北方方向描绘。为摘要的规模系统,SST热强迫主要使大气的低频率的摆动激动。在SST之间的某基本关系和动态过程热强迫和大气的反应模式被揭示,一些新观点被介绍。
简介:NotesOnthefeaturesoftheSSTannualcycleandsurfaceheatbudgetintheSouthChinaSeaINTRODUCTIONTheannualcycleintheoceanandatmospheres...
简介:TheinterannualvariationsofatmosphericheatsourcesandmoisturesinksovertheEquatorialPacificandtheirrelationswiththeSSTanomaliesarestudiedusingECMWFreanalysisdatafrom1979to1993.Itisfoundbysingularvaluedecomposition(SVD)analysisthattheregioninthetropicalPacificwithhighpositivecorrelationbetweentheverticallyintegratedheatsourceanomalyandtheSSTanomaly,andbetweentheverticallyintegratedmoisturesinkanomalyandtheSSTanomaly,ismainlylocatedinalongandnarrowbelttotheeastof170(Ebetween5(Sand5(N.TheanalysisoftheverticalstructureofatmosphericheatsourcesandmoisturesinksshowsthattheinterannualvariationsofQ1,Q2andSSTintheequatorialcentralandeasternPacificarestronglyandpositivelycorrelatedinthewholetroposphereexceptthebottom(962.5hPa)andthetop(85hPa)layers.However,inthewesternPacific,theinterannualvariationsofQ1below850hPaisnegativelyrelatedtotheSST.Thecorrelationcoefficientatthelevel962.5hPareacheseven-0.59.InotherlayersthepositivecorrelationbetweentheinterannualvariationsofQ1,Q2andtheSSTareweakinthewesternPacific.
简介:PHSJ-4型PH计是我局第一台高精确度的PH计,应用到实际观测过程中,遇到许多影响观测质量的具体问题。本文针对PHSJ-4型PH计使用过程中遇到的乱码、测值突跳、电极老化快、合理分辨率的确定、温度干扰因素的控制等问题展开分析,做了大量的条件实验,结合该仪器的工作原理以及PH值所遵循的化学原理,指出要提高和保障观测质量,观测时必须做到如下几点:调节观测参数时用指腹轻按,出现局部黑屏、乱码现象可采用关机后重新开机解决;电极一定要浸泡在KCL保护液中,观测完毕清洗电极后一定要用滤纸把残余的蒸馏水擦干后再授泡在KCL保护液中以免降低电极保护液的保护功效,延长电极的寿命;水样要达到室温时才能进行观测;合理分辨率应设置在0.01PH档。
简介:BasicclimaticcharacteristicsareanalyzedconcerningtheprecipitationanomaliesinrainingseasonsoverregionssouthoftheChangjiangRiver(theYangtze).ItfindsthattheregionsaretheearliestineasternChinawhererainingseasonsbeginandend.Precipitationtheretendstodecreaseoverthepast50years.Watersboundedby9(S-1(S,121(E-129(EarethekeyzonesofSSTanomaliesthataffecttheprecipitationintheseregionsoverMay~Julyinprecedingyears.Long-termair-seainteractionsmakeitpossibleforprecedingSSTanomaliestoaffectthegeneralcirculationthatcomeafterwards,causingprecipitationanomaliesintherainingseasonsinregionssouthoftheChangjiangRiverinsubsequentyears.
简介:AppendixA:Thederivationofequation(4)InFourierdomain,d2(x)=2x2istransformatedintod2(kx)=-k2x(A1)Whenequation(3)isnumericalyc...