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时间:2020-04-22
《内蒙古草原近地层垂直风速廓线的观测研究-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、doi:10.11676/qxxb2O14.058气象学报内蒙古草原近地层垂直风速廓线的观测研究龚玺朱蓉。范广洲李泽椿。马文通周荣卫GONGXi’。ZHURong。FANGuangzhouLIZechunMAWentongZHOURongwei1.成都信息工程学院高原大气与环境四川省重点实验室,成都,6102252.国家气象中心,北京,1000813.国家气候中心,北京,1000814.中国气象局公共气象服务中心,北京,1000811.PlateauAtmosphereandEnvironmentKeyLaboratoryofSichuanProvince.Chengd
2、uUniversityofInformationTechnology,Chengdu610225,China2.NationalMeteorologicalCenter,Beijing100081,China3.NationalClimateCenter,Beiing100081,China4.CMAPublicMeteorologicalServiceCenter,CMA,Beijing100081,China2013-09-22收稿,2014—05—08改回.龚玺,朱蓉,范广洲,李泽椿,马文通,周荣卫.2014.内蒙古草原近地层垂直风速廓线的观测研究.气象学报,72
3、(4):711—722GongXi,ZhuRong,FanGuangzhou,MaWentong,ZhouRongwei.2014.ObservationalstudyoftheverticalwindprofileintheInnerMongoliagrasslandnear-surface.ActaMeteorologicaSinica,72(4):711-722AbstractUsingthei00mtoweratmosphericturbulenceobservationexperimentdataduring2009——2010inInnerMongoliao
4、f—feredbytheNationalClimateCenter,thevariationcharacteristicsofverticalprofileofwindspeedunderthedifferentstabilityconditionsareanalysed,andthewindprofileexpressionisestablishedbasedonthelocalsimilaritytheory.Theresultsshowthat:(1)IntheInnerMongoliagrasslandnearsurfaceatmosphere。theproba
5、bilityofunstablestratificationandstablestratifi—cationOccursmuchhigherthantheneutralandweaklyunstableandweaklystablestratification.(2)Understablestratifica—tion,thecharacteristicsoftheatmospherechangeobviouslyintheverticaldirection,whichmeansthatthehierarchicalconsid—erationisneeded.Acco
6、rdingtotheatmosphericturbulenceobservationexperimentdata,understablestratification,therela—tionshipbetweenthedimensionlessvelocitygradientandthestabilityfcanbeexpressedas1+,inwhich风changeswiththeheight:takes4.3—5.4under30mheight;takes2.9—3.4between30—50m;andtakes2.0—2.9over5Om.KeywordsWi
7、ndverticalprofile,Atmosphericstabilityclassification,Similaritytheory,Monin-Obukhovlength,Dimension—lessgradientofvelocity摘要利用中国国家气候中心2009-2010年在内蒙古锡林浩特开展的i00m铁塔大气湍流观测数据,分析了不同稳定度条件下的垂直风廓线变化特征,并在局地相似理论基础上建立了垂直风廓线表达式。结果表明:(1)内蒙古草原近地层大气中,不稳定层结和稳定层结条件发生的概率远高于中性和弱不稳定、弱稳定层结的发生概
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