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Federal Department of Home Affairs FDHA Federal Office of Meteorology and Climatology Meteo. Swiss

Federal Department of Home Affairs FDHA Federal Office of Meteorology and Climatology Meteo. Swiss Poster Presentation Working Group 3: Physical Aspects

Poster titles … • Matteo Buzzi: Performance of the single column a. LMo turbulence

Poster titles … • Matteo Buzzi: Performance of the single column a. LMo turbulence scheme for a stably stratified atmospheric boundary layer: the first GABLS case • Thorsten Reinhardt: A prognostic graupel microphysics scheme for high-resolution NWP • Silke Dierer: Evaluation of the Kain-Fritsch/Bechtold convection scheme • Alessio Bozzo: Comparison of LM fast radiation scheme to RTX Lb. L model: cloudy processes • Gerd Vogel: The impact of surface forcing on diurnal boundary layer development • Andreas Will: The LM climate mode (CLM) and the behavior of the soil model TERRA_ML • Felix Ament: High resolution soil moisture analysis by assimilation of observations in LM-TERRA Poster Presentation | Working Group 3: Physical Aspects 2

Performance of the single column a. LMo turbulence scheme for a stably stratified atmospheric

Performance of the single column a. LMo turbulence scheme for a stably stratified atmospheric boundary layer: the first GABLS case Matteo Buzzi and Mathias W. Rotach, Meteo. Swiss 3

Poster titles … • Matteo Buzzi: Performance of the single column a. LMo turbulence

Poster titles … • Matteo Buzzi: Performance of the single column a. LMo turbulence scheme for a stably stratified atmospheric boundary layer: the first GABLS case • Thorsten Reinhardt: A prognostic graupel microphysics scheme for high-resolution NWP • Silke Dierer: Evaluation of the Kain-Fritsch/Bechtold convection scheme • Alessio Bozzo: Comparison of LM fast radiation scheme to RTX Lb. L model: cloudy processes • Gerd Vogel: The impact of surface forcing on diurnal boundary layer development • Andreas Will: The LM climate mode (CLM) and the behavior of the soil model TERRA_ML • Felix Ament: High resolution soil moisture analysis by assimilation of observations in LM-TERRA Poster Presentation | Working Group 3: Physical Aspects 4

Sensitivity Tests Regarding Assumed Graupel Particle Properties Motivation Gilmore et al (MWR 2004) found

Sensitivity Tests Regarding Assumed Graupel Particle Properties Motivation Gilmore et al (MWR 2004) found high sensitivity to assumed graupel/hail particle properties in simulations of idealized convection. Can in LMK graupel particle properties changed to more hail-like properties help to reduce problem of underestimation of convection? Conclusion • In LMK simulations of idealized strong convection simulated precipitation • • • can be highly sensitive to the assumed graupel particle properties. This sensitivity was much weaker in simulations of real weather situations. Changing graupel properties toward those of more hail-like properties does not cure problem of underestimated convection in LMK. Therefore a change in the parameterization of the graupel category in the microphysics scheme was not introduced. Thorsten Reinhardt, DWD -

Poster titles … • Matteo Buzzi: Performance of the single column a. LMo turbulence

Poster titles … • Matteo Buzzi: Performance of the single column a. LMo turbulence scheme for a stably stratified atmospheric boundary layer: the first GABLS case • Thorsten Reinhardt: A prognostic graupel microphysics scheme for high-resolution NWP • Silke Dierer: Evaluation of the Kain-Fritsch/Bechtold convection scheme • Alessio Bozzo: Comparison of LM fast radiation scheme to RTX Lb. L model: cloudy processes • Gerd Vogel: The impact of surface forcing on diurnal boundary layer development • Andreas Will: The LM climate mode (CLM) and the behavior of the soil model TERRA_ML • Felix Ament: High resolution soil moisture analysis by assimilation of observations in LM-TERRA Poster Presentation | Working Group 3: Physical Aspects 6

Evaluation of the Kain-Fritsch/Bechtold convection scheme (Dierer & Schubiger) all 800 m – 1500

Evaluation of the Kain-Fritsch/Bechtold convection scheme (Dierer & Schubiger) all 800 m – 1500 m black: operational; red: Kain-Fritsch/Bechtold < 800 m Poster Presentation | Working Group 3: Physical Aspects > 1500 m 7

Poster titles … • Matteo Buzzi: Performance of the single column a. LMo turbulence

Poster titles … • Matteo Buzzi: Performance of the single column a. LMo turbulence scheme for a stably stratified atmospheric boundary layer: the first GABLS case • Thorsten Reinhardt: A prognostic graupel microphysics scheme for high-resolution NWP • Silke Dierer: Evaluation of the Kain-Fritsch/Bechtold convection scheme • Alessio Bozzo: Comparison of LM fast radiation scheme to RTX Lb. L model: cloudy processes • Gerd Vogel: The impact of surface forcing on diurnal boundary layer development • Andreas Will: The LM climate mode (CLM) and the behavior of the soil model TERRA_ML • Felix Ament: High resolution soil moisture analysis by assimilation of observations in LM-TERRA Poster Presentation | Working Group 3: Physical Aspects 8

SW Heating rate IWC=0. 03 g/m 3 Solar parameterization of ice particles works fine!

SW Heating rate IWC=0. 03 g/m 3 Solar parameterization of ice particles works fine! Heating rates for the 3 habits and LM are in exceptional agreement along all the troposphere for all the analyzed standard atmospheres Aggregates and columns show slightly more extinction inside the cloud 9

Poster titles … • Matteo Buzzi: Performance of the single column a. LMo turbulence

Poster titles … • Matteo Buzzi: Performance of the single column a. LMo turbulence scheme for a stably stratified atmospheric boundary layer: the first GABLS case • Thorsten Reinhardt: A prognostic graupel microphysics scheme for high-resolution NWP • Silke Dierer: Evaluation of the Kain-Fritsch/Bechtold convection scheme • Alessio Bozzo: Comparison of LM fast radiation scheme to RTX Lb. L model: cloudy processes • Gerd Vogel: The impact of surface forcing on diurnal boundary layer development • Andreas Will: The LM climate mode (CLM) and the behavior of the soil model TERRA_ML • Felix Ament: High resolution soil moisture analysis by assimilation of observations in LM-TERRA Poster Presentation | Working Group 3: Physical Aspects 10

Soil moisture: LME vs. measurements (Falkenberg) 11

Soil moisture: LME vs. measurements (Falkenberg) 11

Poster titles … • Matteo Buzzi: Performance of the single column a. LMo turbulence

Poster titles … • Matteo Buzzi: Performance of the single column a. LMo turbulence scheme for a stably stratified atmospheric boundary layer: the first GABLS case • Thorsten Reinhardt: A prognostic graupel microphysics scheme for high-resolution NWP • Silke Dierer: Evaluation of the Kain-Fritsch/Bechtold convection scheme • Alessio Bozzo: Comparison of LM fast radiation scheme to RTX Lb. L model: cloudy processes • Gerd Vogel: The impact of surface forcing on diurnal boundary layer development • Andreas Will: The LM climate mode (CLM) and the behavior of the soil model TERRA_ML • Felix Ament: High resolution soil moisture analysis by assimilation of observations in LM-TERRA Poster Presentation | Working Group 3: Physical Aspects 12

Developed by the CLM-Community in cooperation with the German weather service , , Open

Developed by the CLM-Community in cooperation with the German weather service , , Open Questions’’ and W_so Initialisation , , Work in Progress’’ saturation + annual cycle T_so – Initialisation } Underestimation of Latent Heat ROOT_DEPTH, VEG 3 D } Únderestimated Variance of T_so Constant T at the Lower Boundary W_so-dependent heat cond. λ ZMAX dependent on TEND zero flux Adjustment of Gravitational Flow and Run-off Limitation of Soil Heat Flux Introduction phase relation + annual cycle Model Results process analysis and } further evaluation Work in Progress

Poster titles … • Matteo Buzzi: Performance of the single column a. LMo turbulence

Poster titles … • Matteo Buzzi: Performance of the single column a. LMo turbulence scheme for a stably stratified atmospheric boundary layer: the first GABLS case • Thorsten Reinhardt: A prognostic graupel microphysics scheme for high-resolution NWP • Silke Dierer: Evaluation of the Kain-Fritsch/Bechtold convection scheme • Alessio Bozzo: Comparison of LM fast radiation scheme to RTX Lb. L model: cloudy processes • Gerd Vogel: The impact of surface forcing on diurnal boundary layer development • Andreas Will: The LM climate mode (CLM) and the behavior of the soil model TERRA_ML • Felix Ament: High resolution soil moisture analysis by assimilation of observations in LM-TERRA Poster Presentation | Working Group 3: Physical Aspects 14

MSMA (Measurement driven soil moisture analysis) Problem No observation available at scale of interest!

MSMA (Measurement driven soil moisture analysis) Problem No observation available at scale of interest! Surface OBS 100 km NWP Accurate soil moisture analysis with good representation of rain induced effect, if • forcing data is of high quality • model physic has no deficiencies “Use a good soil module and force it with observations!” Satellite Observa tional gap Result Possible Solution 10 km 100 m 1 m Radar Satellite Meteorological Forcing: T, p, u, q, Qdown Precipitation RR SVAT „TERRA“ Simulation of • Energy balance • Soil processes • Annual cycle of vegetation In situ Poster Presentation | Working Group 3: Physical Aspects time (TERRA two layer, Lindenberg, 2003) 15