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ID:36788267
大小:1.55 MB
页数:5页
时间:2019-05-15
《基于降水集中度方法的安徽省主汛期降水时空特征分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、!"#$%&(ChineseJournalofAgrometeorology)2010,31(4):507-511doi:10.3969/j.issn.1000-6362.2010.04.004±²³N´ZLopGµ¶·¸¹g³NºxyO~1,2111@CDE,.FG,HI,JK(1/ô%H!Û,±230031;2/ô%&§,±230061)56:î/ô1961-2009µ6-8Ä>vw,Èî>J!`J!<¼_#uº<>@Z`Ißà,¾ì'ǵ`ÇǵMJ!~uú。t:>J!(PCD)`J!<(PCP)öCz
2、9>9bï¢5¸M«·°û。/ôº<>J!`J!?ÛUì¡ï,^¼2Ü>;7?»y{Ì
3、。789:>J!;@;º<;/ôSpatialtemporalDistributionofPrecipitationinAnhuiP
4、rovinceduringMainFloodSeasonBasedonPrecipitationConcentrationDegree12111WANGSheng,SHILei,XIEWusan,CHENGZhi,DAIJuan(1AnhuiClimateCenter,Hefei230031,China;2AnhuiMeteorologicalBureau,Hefei230061)Abstract:BasedontheprecipitationdatafromJunetoAugustofAnhuiprovinced
5、uring1961-2009,thespatialtemporaldistributionandvariationofprecipitationwereanalyzedbyusingthePrecipitationConcentrationDegree(PCD)andPrecipitationConcentrationPeriod(PCP)inmainfloodseason,andthePCDwerecomparedbetweenmoreprecipitationyearandlessprecipitationye
6、ar.TheresultsshowedthatthePCDandPCPcouldquantitativelyrepresentthenonuniformitypropertiesoftheprecipitationspatialtemporaldistribution.ThespatialdistributionincreasingtrendofPCDandPCPwereobviousfromsouthtonorthoverAnhuiprovinceduringmainfloodseason;theinterann
7、ualandinterdecadalvariationsofPCDandPCPwereobvious.EOFanalysisshowedthattheratioofthefrontthreeeigenvectorswithtotalsquareerrorwas57%.ThefirsteigenvectorrepresentedtheconformityPCDvariationoverAnhuiprovince,thesecondeigenvectorrepresentedthereversePCDvariationb
8、etweenthesouthandnorth,andthethirdeigenvectorshowedthatthereversePCDvariationbetweensouthnorthandthecentralregion.ThesyntheticanalysisshowedthatthePCDinmoreprecipitationyearswasgreaterthanthatinlessprecipitationyears,andthePCPwassmallerthaninthelessprecipitation
9、years.ThegravityofprecipitationanditscorrespondingperiodscouldbeextractedbyusingthePCDandPCPmethod,whichcouldprovidedthebasisfortheformationmechanismofextremep
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