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1、(3)threemaintypesofthesummerthesummerprecipitationinAnhuiarethecharacteristicsofspatialconsistency,adversevariationtrendinnorthandsouthandvariationtrendinHuaibei,HuainanandJianghuai.AndthecharacteristicsofspatialconsistencyshowedthesummerprecipitationofAnhuiincreasesinpositiveabnorma
2、lyearsandviceverse.ThecharacteristicsofadversevariationtrendinnorthandsouthshowedthesummerprecipitationinthesouthofAnhuiincreaseswhilethatinthenorthofAnhuidecreasesinpositiveabnormalyearsandviceverse.ThelastoneisthecharacteristicsofvariationtrendinHuaibei,JianghuaiandHuainanshowedtha
3、tthesummerprecipitationintheareaofHuaibeiandHuainanincreaseswhilethatinJianghuaidecreasesinnegativeabnormalyears.(4)ThelatitudinaldisplacementoftheWestPacificsubtropicalhighinsummerisanimportantfactorthatinfluencesthesummerprecipitationinAnhui.InJune,thepositionofsubtropicalhighridei
4、spartialtosouth,thewesternridgepointispartialtoeast,thesubtropicalhighareaisrelativesmallerandthesubtropicalhighstrengthisrelativeweakened.Whenthe500hpaheightfieldrisingfromTaiwanIslandtotheEastChinaSeaArea,neartheareaof30°N,115°-145°E,thesummerprecipitationinAnhuiisgettinglessinthes
5、ametimeandviceverse.InJuly,thepositionofsubtropicalhighrideispartialtonorth,thewesternridgepointispartialtowest,thesubtropicalhighareaisrelativelargerandthesubtropicalhighstrengthisrelativestronger.Whentheheightfieldrisinginthekeyareatothesouthof30°N,theheightfieldfallingintheareasin
6、cludingfromYellowRiverbasintoKoreanPeninsula,YellowSeaandBohaiBaybasin,fromJapanSeatoeasternoceanofJapanIsland,thesummerprecipitationinAnhuiProvinceexceptDangshanisgettingmoreandviceverse.InAugust,thepositionofsubtropicalhighrideispartialtonorth,thewesternridgepointispartialtoeast.Wh
7、enthe500hpaheightfieldintheareasoftheWestPacificsubtropicalhighrising,the500hpaheightfieldfallingintheareasincludingeasternoceanofPhilippines,fromMongoliatothesouthofSiberiaandfromtheeasternSiberiatoOkhotskSea,thesummerprecipitationisdecreasingandviceverse.Intermsoftheentiresummer,th
8、epositionofs
