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ID:33501175
大小:8.01 MB
页数:79页
时间:2019-02-26
《近五十年亚洲地面气温变化趋势与突变的时空分布-(6194)》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、TheSpatialandTemporalDistributionofAbruptChangeandTrendofSurfaceTemperatureinAsiainNearlyFiveDecadesAbstractBasedontheairtemperaturedatasetsfrom2467observationstationsinChinaandglobalmonthlyairtemperaturefromNationalClimateDataCenter(NCDC),thedatasetsinAsiaareinterpolat
2、edandrizedbyinversedistanceweightingmethod.Thesensitivityexperimentofobservationdensityisconductedontotemperatureabruptchange.Theresultsshowthatatleast33observationstationsareneededfortheanalysisrequestforChina.Therefore,only132stationsarerequiredfortheanalysisofthetemp
3、eratureabruptchangeforAsia.AcrosscheckisimposedontotheinterpolateddatainAsia.Therearesmalldeviationsbetweentheestimatedvalueandrealvalue,whichindicatestheestimatedvaluecanbeappliedtotheanalysisofairtemperaturetrendandabruptchangeinAsia.Usingtherasterizeddataandreanalysi
4、sdatafromNationalCentersforEnvironmentalPrediction-NationalCenterforAtmosphericResearch(NCEP/NCAR),theabruptchangeoftemperatureduring1961-2011overChinaandEastAsiawasanalyzedbyshowingitsspatialandtemporaldistribution.Finally,thepossiblefactorsresponsiblefortheabruptchang
5、eregimeoftemperatureoverEastAsiawerediscussed.Themainconclusionsarelistedfollowing:(1)TheabruptchangemodeoftheannualmeantemperatureoverChinaiswellcorrelatedwiththelatitude.Theabruptwarminghappenedearlierbothpolewardandequatorwardof35°N.Meanwhile,theabruptchangeadvancedf
6、romcoasttoinland.Thespatialandtemporaldistributionoftheabruptchangeofthemaximumtemperaturewassimilartothatofthemeantemperature,whiletheabruptchangeoftheminimumtemperaturewasahead.TheabruptchangeofthetemperaturechangeoverTibetanPlateauwasalwayslaterthanthatofmostpartsofC
7、hina.(2)TheabruptchangemodeoftheseasonalmeantemperatureoverChinashowsobviousseasonaldiversity.Differencesaremostevidentbetweenwinterandsummer.Inwinter,theairtemperatureadvancesfromnorthtosouth.Theregionaloflatestabruptchangetakesplaceintheeastoftheplateau,andthetimefora
8、bruptchangeadvancesfromcoasttoinland.Incontrast,forsummerChinaisdividedintosoutheastpartandnorthwestpartduetot
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