POSSIBLE RELATIONSHIP BETWEEN THE INTERANNUAL ANOMALY OF THE TROPICAL PACIFIC SEA SURFACE HEIGHT AND SUMMER PRECIPITATION IN CHINA-中国期刊网

摘要 ByusingNCEPGODASmonthlyseasurfaceheight(SSH)and160-stationmonthlyprecipitationdatainChina,theseasonalandinterannualcharacteristicsofSSHareanalyzedoverthetropicalPacific,andcorrelationsbetweenSSHandsummerrainfallarediscussed.Theresultsareshownasfollows:(1)ThetropicalPacificSSHtakesona'V'patternintheclimaticfieldwithaneastwardopening,anditishigherinthewesternpart(inthenorthwesternpart)thanintheeasternpart(inthesouthwesternpart).Thehigh-valueareasaremorestableinthenorthwest,andthevaluerange(greaterthan0.8m)islargerinspringandsummerthaninautumnandwinter.Thehigh-valueareainthesouthwesternpartisthelargest(smallest)andmorenortherly(southerly)inspring(summer).SSHishigherinspringandautumnthaninsummerandwinterovertheequatorialzone.(2)TheinterannualanomaliesoftheSSHarethestrongestoverthetropicalwesternandsouthwesternPacificandarestrongerinwinterandspringthaninsummerandautumn.TheinterannualanomaliesarealsostrongovertheequatorialmiddleandeasternPacific.Thedistributionrangesarelargerandtheintensitiesarestrongerintheautumnandwinter.ThereisacloserelationshipbetweentheSSHinterannualanomaliesandENSOeventsinautumn,winterandspring.(3)WhenENSOeventstakeplaceinwinter,accordingtothesimultaneousrelationshipamongthetropicPacificSSH,850hPawindfieldsandthesummerprecipitationofChina,itcanbepredictedthattheprecipitationwillbesignificantlymorethannormaloverthesouthoftheYangtzeRiver,especiallyoverDongtingLakeandPoyangLakeregion,easternQinghai-TibetPlateau,Yangtze-HuaiRiverValley,easternpartofInnerMongoliaandlessthannormalovertheareaofGreatBandofYellowRiver,NorthChinaandSouthChinainsuccessivesummers.

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POSSIBLE RELATIONSHIP BETWEEN THE INTERANNUAL ANOMALY OF THE TROPICAL PACIFIC SEA SURFACE HEIGHT AND SUMMER PRECIPITATION IN CHINA

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POSSIBLE RELATIONSHIP BETWEEN THE INTERANNUAL ANOMALY OF THE TROPICAL PACIFIC SEA SURFACE HEIGHT AND SUMMER PRECIPITATION IN CHINA

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