Validation of the COSMO [Elektronische Ressource] : land-surface parameterization TERRA-ML with discharge measurements / vorgelegt von René Graßelt

Validation of the COSMOLand-Surface ParameterizationTERRA-ML with dischargemeasurementsDissertationzurErlangung des Doktorgrades (Dr. rer. nat.)derMathematisch-Naturwissenschaftlichen Fakult¨ atderRheinischen Friedrich-Wilhelms-Universit¨ at Bonnvorgelegt vonRen´eGraßeltausStralsundBonn, 2009Angefertigt mit Genehmigung der Mathematisch-Naturwissenschaftlichen Fakult¨ atder Rheinischen Friedrich-Wilhelms-Universit¨ at Bonn1. Referent: Prof. Dr. Clemens Simmer2. Referent: Prof. Dr. Susanne CrewellTag der Promotion: 29.01.2010Diese Dissertation ist auf dem Hochschulschriftenserver der ULB Bonnhttp://hss.ulb.uni-bonn.de/diss online elektronisch publiziert.Erscheinungsjahr: 2010AbstractThe objective of this study is to eliminate known deficits in the operational land-surface parameterization (LSP) TERRA-ML of the numerical weather prediction(NWP) model COSMO (Consortium for Small-Scale Modeling). A large deficit rep-resents the drying out of TERRA-ML which leads to an unrealistic runoff simulationduring long-time simulations. Earlier studies show that the vertical soil water for-mulation influences the generation of runoff. The operational TERRA-ML uses aformulation which is not often used in NWP models. This study investigates theimpact of the vertical soil water formulation on the runoff generation.