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1、HydrologicalSciencesJournalISSN:0020-6024(Print)(Online)Journalhomepage:http://www.tandfonline.com/loi/thsj18POTENTIALINSOLATIONASATOPOCLIMATICCHARACTERISTICOFDRAINAGEBASINSRICHARDLEETocitethisarticle:RICHARDLEE(1964)POTENTIALINSOLATIONASATOPOCLIMATICCHARACTERISTICOFDRAINAGEBASINS,Hy
2、drologicalSciencesJournal,9:1,27-41,DOI:10.1080/02626666409493652Tolinktothisarticle:https://doi.org/10.1080/02626666409493652Publishedonline:04Jan2010.SubmityourarticletothisjournalArticleviews:490Citingarticles:21ViewcitingarticlesFullTerms&Conditionsofaccessandusecanbefoundathttp:
3、//www.tandfonline.com/action/journalInformation?journalCode=thsj20POTENTIALINSOLATIONASATOPOCLIMATICCHARACTERISTICOFDRAINAGEBASINS(*)RICHARDLEECooperativeWatershedManagementUnit,ColoradoStateUniversity,andRockyMountainForestandRangeExperimentStation(**),FortCollins,ColoradoABSTRACTAm
4、ethodisderivedforcharacterizingdrainagebasinsandotherlandareasintermsoftheir"average"exposureandpotentialirradiationbythesun.Themostefficienttrigonometricandgraphicalproceduresforevaluatingpotentialinsolationuponslopingsurfacesareselected,andtheconceptofa"theoreticalinterceptingsurfa
5、ce"isemployedtodescribeterrainelementsintermsofasingle-valuedfacet.Applicationswithsecondaryexperimentaldataindicatethatthereisastrongpositivecorrelationbetweenderived"radiationindexes",andevapotranspirationasmeasuredbytheprecipitation-runoffdifference.INTRODUCTIONTheideaofevaluating
6、evaporationthroughevaluationoftheenergyexchangeattheevaporatingsurfaceismostpromising.Foundedasitisuponthestrictphysicalprinciplethattheevaporation(E)frommoistsurfacesissomesimplefunctionofthenetenergy(QE)available,orE=!(QE),thereisnodoubtofthevalidityoftheapproach.Yet,becauseofthege
7、neralelusivenessofenergyexchangecomponentsinanaturallandscape,andalsoproblemsinherentinspatialsampling,applicationsoftheideaonaquantitativebasisarerare.Toavoidthedifficulties,diversemethodshavebeenadvancedasmeansofestimating,orindexing,QE.Meanairtemperatureanddaylengthparametersareco
8、mmonlyemploy
