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10.04.2008 KIT – die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Multi-scale Analysis of the Impact of Soil Moisture.

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Präsentation zum Thema: "10.04.2008 KIT – die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Multi-scale Analysis of the Impact of Soil Moisture."—  Präsentation transkript:

1 KIT – die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Multi-scale Analysis of the Impact of Soil Moisture on Convective Precipitation C. Kottmeier, C. Hauck, G. Schädler, N. Kalthoff Institute for Meteorology and Climate Research, University of Karlsruhe Renewal proposal KO 924/ unique soil moisture network2. analysis of high-resolution data sets from the COPS-IOPs 3. GME/COSMO-DE modelling: influence of soil moisture variability on convective precipitation precipitation for modified SM

2 KIT – die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Quantification of the effects of the variability of soil moisture, evapotranspiration and water content in the PBL on convective precipitation processes based on a combined observation/model approach observations: soil moisture, soil temperature, energy balance, atmospheric moisture content modelling: GME/COSMO-DE; special focus on SVAT formulation Identification of the temporal and spatial scales on which such variability influences convective precipitation scales: short-term (local impact of soil-atmosphere transport processes) & seasonal scale (soil moisture – precipitation feedback) General Objectives: Aims of the project

3 KIT – die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Installation soil moisture & soil temperature station network Soil moisture measurements (will be maintained during the project) Quality control Validation & spatial interpolation on COSMO grid Work Package 1: soil moisture measurement network Time schedule & Work Packages Selection of case studies, data compilation Moisture transport in the PBL and energy exchange processes Comparison with modelled data sets Work Package 2: analysis of COPS-IOPs Time schedule: Start: (PhD student Liane Krauss ) Soil moisture network: – min ; COPS Jun-Aug 2007 if confirmed by DFG: one open position for the modelling part

4 KIT – die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Work Package 3: GME/COSMO modelling Compilation of soil data SVAT model analysis High-resolution analysis of COSMO soil moisture representation Analysis of model deficiencies Determination and quantification of QPF improvement Work Packages & Cooperation Cooperation: Surface fluxes and valley convection (Foken, Wirth, Kalthoff) Contribution of lower and upper tropospheric forcing to the initiation and inhibition of convection over complex terrain (Barthlott, Kalthoff) Bundle of proposals to exploit the data of the Convective and Orographically Induced Precipitation Study (COPS)

5 KIT – die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Installation of soil moisture network at least 2007 – 2009 installed at existing DWD/LUBW stations

6 KIT – die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Stations of the soil moisture monitoring network number of stationsoperating period COPS specific sites COPS Supersites with energy balance station and IMK soil moisture station – – COPS Supersites with energy balance station and soil moisture station run by collaborating institutes 2variable IMK energy balance station with IMK soil moisture station – energy balance station and soil moisture stations run by collaborating institutes – COPS indepen dent stations IMK soil moisture stations soil moisture stations run by collaborating institutes TOTAL60 Soil moisture measurements preliminary calibration [Krauss, Barthlott et al. submitted to Meteorol. Zeitschr.]

7 KIT – die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Soil moisture measurements Waghäusel (N) Simonswald (S) [Krauss et al. submitted] July 2007

8 KIT – die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Comparison with GME values

9 KIT – die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) COSMO-DE case studies [Krauss et al. submitted] COPS IOP 8b obs – sim (COSMO-DE) at 5 cm depth

10 KIT – die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Outlook: observations during COPS COPS IOP 11 higher latent heat flux and lower sensible heat flux at Baden Airpark due to the larger amount of vegetation and larger evaporation from the soil soil moisture at 5 cm depth at Baden Airpark decreased by almost 3 Vol% between 9 am and 5 pm while soil moisture at Hornisgrinde remains unchanged

11 KIT – die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Outlook Model simulations with modified soil moisture fields changes in convective precipitation -50% +25%+50% -25% Site specific calibration of sensors Spatial interpolation/upscaling approaches COPS-IOP analyses COSMO-DE simulations with modified soil moisture fields


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