Page 14 - 《水资源与水工程学报》2022年第6期
P. 14
! 33 " ! 6 # & ' ( ) & * + , - Vol.33No.6
2022 $ 12 % JournalofWaterResources&WaterEngineering Dec.,2022
DOI:10.11705/j.issn.1672-643X.2022.06.02
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KLDMN:P467 OPQRS:A OTUN:1672643X(2022)06001008
CharacteristicsofextremetemperaturechangesinWestern
Hubeimountainsfrom1971to2015
SHIYinfang,XIONGJinkun,XINGJie
(CollegeofGeographyandEnvironmentalScience,NorthwestNormalUniversity,Lanzhou730070,China)
Abstract:Inordertohaveadeepunderstandingofthechangingfeaturesofextremetemperatureeventsun
dertheinfluenceofglobalwarminginWesternHubeimountains,thevariationcharacteristicsoftheextreme
temperatureeventsinWesternHubeimountainswereanalyzedanddiscussedbasedonthedailydataoffour
meteorologicalstationsinEnshi ,Badong,LaifengandFangxianfrom1971to2015,usingmethodsoflinear
regression,movingaverage,Mann-KendalltestandMorletwavelet.Theresultsshowedthattheextreme
minimumtemperature ,extrememaximumtemperatureandthenumberofhightemperaturedaysallshowed
anincreasingtrendinthepast45years,amongwhich,theextrememinimum temperatureincreasedthe
most ;whereasthenumberoffrostdaysshowedadecreasingtrend.Thenumberofextremecoldeventsde
creasedduringthepast45years ,butthenumberofextremehoteventsincreased,with1996and2007as
theabruptchangeyears ,respectively.Theextremetemperatureeventshadthecharacteristicsofperiodic
changeof5and18aandsoon,andtheeventschangedalternatively.Theresearchresultscanprovidea
referencefordisasterpreventionandmitigationandtheformulationofacomprehensivemechanismforthe
preventionofextremetemperaturemeteorologicaldisastersinwesternHubei.
Keywords:extremetemperature;trendanalysis;M-Kabruptchangetest;waveletanalysis;Western
Hubeimountains
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