普陀区域地形对降水分布的影响研究

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中图分类号：P461.3 文献标志码：A 文章编号：2095-2945(2025)14-0099-06

¹，²，1（1.市普陀区气象局，浙江 ；2.市定海区气象局，浙江 316000）

Abstract:Usingglobaldigitalelevationmodeldatawithaspatialresolutionof3OM,altitude，aspect,andslopedata were extracted,andcombinedwithroutineobservationdatafromautomaticstations，theimpactoftopographyinPutuoareaon precipitation was explored. The following conclusions are drawn: ① The terrain of Putuo District isa typical island with low mountainsandhill.9O%oftheareaisbelow15Ometershigh.Theoverallterrainisgentle.Thecoastalareasaremainlyflat andgentleslopes.Mostofthemountainousareasinthecentral partoftheislandaresteepslopes,andtheproportionofsharp slopes and dangerous slopes is low. ② Affected by terrain undulation,the northeast and south winds play a positive lifting role at mostrainfallstations,andthenorthandsouthwestwindsplayanegativelitingroleatmostrainfallstations,whichisrelatedto the direction of the large mountain ranges in Putuo District. ③ Thedynamic lifting effect of the terrain in Putuo District and the correlationbetweenaltitudeandprecipitationarepoor.ThisisrelatedtothelowterrainofPutuoandtheinabilitytotransport watervaportothelitingcondensationheight,thescateredislandsintheregion，thesmalltotalmountainousarea,thelarge terainrange,thesmallscaleweathersystem,thespatialdiscontinuityofdatabetweenislands,andtheimpactoftheoceanon precipitation.

Keywords:Putuo District;terrindynamic lifting;aspectandslope；precipitationdistribution;digital elevationmodel

暴雨在灾害性天气预报中拥有举足轻重的地位，因地形原因造成的暴雨降水更是众多学者研究的内容。（剩余9765字）