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1、ClimateChangeResearchLetters气候变化研究快报,2015,4(4),228-236PublishedOnlineOctober2015inHans.http://www.hanspub.org/journal/ccrlhttp://dx.doi.org/10.12677/ccrl.2015.44026ClimateChangeCharacteristicsofRainstormDaysinSouthChinaShaoyongChen1,2,XiaofenZhang2,JunruiGuo2,Yu
2、zhenGuo21InstituteofAridMeteorology,ChinaMeteorologicalAdministration,KeyLaboratoryofAridClimaticChangingandReducingDisasterofGansu,KeyLaboratoryofAridClimaticChangingandReducingDisasterofChinaMeteorologicalAdministration,LanzhouGansu2MeteorologicalBureauofBaiyi
3、n,BaiyinGansuEmail:csy505@126.comndrdthReceived:Oct.2,2015;accepted:Oct.23,2015;published:Oct.26,2015Copyright©2015byauthorsandHansPublishersInc.ThisworkislicensedundertheCreativeCommonsAttributionInternationalLicense(CCBY).http://creativecommons.org/licenses/by
4、/4.0/AbstractUsingthedaybydayprecipitationdataat225stationsinthesouthareaofChinaintheperiodof1961-2010,withthetrendanalysis,MonteCarlotestmethod,theslidingTtest,Mann-Kendall,etc.,thespatialandtemporaldistributioncharacteristicsofrainfalldayandevolutionruleabover
5、ainstorminthesouthofChinafor50yearsareanalyzed.ResultsshowthattheSouthernChina,themiddleandlowerreachesofYangtzeRiverandtheChengduPlainarerelativelymorerains-tormareas.Rainstormdaytrendisnotsignificantinmostareas;thereisaslightincreaseintheeastandaslightdecrease
6、inthewest.ButrainstormdayshavesignificantlyreducedinChengduPlain.Therewasaremarkablemutationin1992.RainstormdaysoftheYangtzeRiverhaveanob-viousincreasingtrend.Therewasaremarkablemutationin1986.Asforseasonaldistribution,itistheleastinwinterandmostinsummer.Itismor
7、einspringthaninautumn.WinterrainstormmainlyoccursinsouthernChinaandithasaslightincreasingtrend;springrainstormmainlyoc-cursinsouthernChina,themiddleandlowerreachesofYangtzeRiver.Itchangesinsignificantly.Rainstorminsummeristhemostandhasasignificantincreasetrend.A
8、mongthem,aslightin-creaseisinsouthernChinaandanobviousincreaseisinthemiddleandlowerreachesofYangtzeRiver.ItreducessignificantlyinChengduPlain;inautumn.Rainstormoccurs
