陆面过程研究进展 定量遥感班课件

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1、PekingUniversity讲授内容I陆面过程研究进展II陆面过程与遥感的结合2010-7-61刘树华PekingUniversityI陆面过程研究进展2010-7-62刘树华PekingUniversity目录陆面过程研究的意义陆面过程研究方法陆面过程模式研究进展2010-7-63刘树华PekingUniversity目录陆面过程研究的意义陆面过程研究方法陆面过程模式研究进展2010-7-64刘树华PekingUniversityWhatisLandSurfaceProcesses?2010-

2、7-65刘树华ClimateSystemPekingUniversity2010-7-66刘树华4PekingUniversityLandSurfaceProcessesLandSurfaceProcessesareimportantforLandSurfaceProcessesModeling,AtmosphereBoundaryLayerModeling,WeatherForecastingModeling,FloodForecastingModeling,DroughtForecastingM

3、odeling,ClimateModeling1.Providestheboundaryconditions2.Partitionsavailableenergyintosensibleandlatentheatflux3.Partitionsrainfallintorunoffandevaporation4.COfluxesatthesurface25.Updatesstatevariableswhichaffectsurfacefluxes.2010-7-67刘树华5PekingUniversi

4、tyWhydoStudyofLandSurfaceProcesses?2010-7-68刘树华PekingUniversity陆面过程研究在以下领域具有重要意义陆面的生态和水文过程理论生态模型的改进陆气相互作用理论大气边界层物理理论陆面过程模式改进数值天气预报模式的改进气候变化及气候模式改进提高天气、气候预测精度气候变化、人类活动、土地利用改变地表特征改变陆面过程改变大气动力、热力过程2010-7-69刘树华PekingUniversity目录陆面过程研究的意义陆面过程观测研究陆面过程模式研究201

5、0-7-610刘树华PekingUniversityMethodologyofLandSurfaceProcessesObservationStudy2010-7-611刘树华PekingUniversityWaterSurfaceEnergyBalanceRn–G=H+LESunRn=(K–K-Kp)+(L–L)LEK=α×KLLHKLakeKpGK:incidentshortwaveradiationH:sensibleheatfluxK:reflectedshortwaveradiationL

6、E:latentheatfluxL:incominglongwaveradiationG:waterheatfluxL:outgoinglongwaveradiationα:albedoKp:shortwaveradiationpenetratingintowater2010-7-612刘树华PekingUniversitySoilSurfaceEnergyBalanceRn–G=H+LESunRn=(K–K-Kp)+(L–L)LEK=α×KLLHKKpGKpK:incidentshortwaver

7、adiationH:sensibleheatfluxK:reflectedshortwaveradiationLE:latentheatfluxL:incominglongwaveradiationG:SoilheatfluxL:outgoinglongwaveradiationα:albedoKp:shortwaveradiationpenetratingintoSoil2010-7-613刘树华PekingUniversitySurface(Ecosystem)EnergyBalanceRn–G

8、=H+LESunRn=(K–K)+(L–L)LEK=α×KLLHKGK:incidentvisibleshortwaveradiationH:sensibleheatfluxK:reflectedvisibleshortwaveradiationLE:latentheatfluxL:incomingthermallongwaveradiationG:soilheatfluxL:outgoingthermallongwaveradiationα:albedo2010-7