摘要
Basedontheremotesensingdata,theradiosondedataandprecipitationdataobservedbyweatherstations,distributionsofatmosphericwater-vaporandcloudmotionwindovertheQilianMountainsareanalyzed.Moreover,onthebasisofwater-vaporandcloudmotionwindanalyses,relationsofatmosphericwater-vapordistributionwithprecipitation,atmosphericcirculation,andterrainareinvestigated.Theresultsshowthatdistributionsofatmosphericwater-vaporandprecipitationintheQilianMountainsareaffectedbythewesterlybelt,thesoutherlymonsoon(theSouthAsianmonsoonandplateaumonsoon),andtheEastAsianmonsoon.InthenorthwestQilianMountains,water-vaporandprecipitationaxeentirelyaffectedbythewesterlybelt,andthereisnootherdirectionwater-vaportransportexceptwesterlywater-vaporflux,hence,thenorthwestregionisregardedasthewesterlybeltregion.Inthesouthandmiddleofthemountains,water-vaporismainlycontrolledbythesoutherlymonsoon,37.7%ofthetotalwater-vaporisfromthesouth,especiallyinsummer,thesoutherlywater-vaporfluxaccountsfor55.9%ofthetotal,andfurthermorethewater-vaporcontentinthesoutherlyflowismorethanthatinthewesterlyflow.Thesoutherlymonsoonwater-vaporisinfluencedbytheSouthAsianmonsoonfromtheIndianOceanandtheplateaumonsoonintheQinghai-TibetanPlateau,thus,thesouthandmiddleregioniscalledsoutherlymonsoonregion.ButinthenortheastQilianMountains,theEastAsianmonsoonisthemainclimatesystemaffectingthewater-vapor.Besideswestandnorthwestwater-vaporfluxes,therearealotofeasterlywater-vaporfluxesinsummer.Thefrequencyofeasterlycloudmotionwindsinsummerhalfyearaccountsfor27.1%ofthetotal,thoughthefrequencyisnothigh,itisthemainwater-vaporsourceofsummerprecipitationinthisregion,therefore,thenorthwestregionisamarginalregionoftheEastAsianmonsoon.Ontheotherhand,atmosphericwater-vapor,precipitation,andconversionrateofwater-vaporintopre
出版日期
2008年01月11日（中国期刊网平台首次上网日期，不代表论文的发表时间）
