ICCARUS 2021 - Program 22Nd ICON/COSMO/CLM/ART User Seminar

ICCARUS 2021 - Program 22nd ICON/COSMO/CLM/ART User Seminar

Monday 08 March 2021

10:00 – 10:40 Welcome & Introduction

Solicited Speaker Chair: tba 10:40 – 11:10 Aeolus, GPS, 3D-RADAR, Cameras, SYNOP and more Innovation for ICON Data Assimilation Roland Potthast Deutscher Wetterdienst 11:10 – 11:30 Coﬀee Break (20 min)

ICON-Seamless Chair: tba 11:30 – 11:50 Roadmap towards ICON-Seamless B. Früh(1), P. Korn(2), W. Müller(2), R. Potthast(1) (1) Deutscher Wetterdienst, (2) Max Planck Institute for Meteorology 11:50 – 12:10 The ICON-System at MPI-M and its application for Climate Simulations P. Korn(1), and W. Müller(1) Max Planck Institute for Meteorology 12:10 – 12:30 Sapphire - towards the next generation of Earth System models D. Klocke(1,2), and Sapphire-team(2,3) (1) HErZ, DWD (2) MPI-Met (3) DKRZ 12:30 – 13:30 Lunch Break

Plenary Session: Data Assimilation Chair: tba 13:30 – 13:50 Evaluation of ICON’s model cloud fields using simulated and observed visible satellite images C.Stumpf (1), L. Bach(1), C. Koepken-Watts(1), L. Scheck(1,2), and R. Potthast(1) (1) DWD, (2) Hans-Ertel-Zentrum / LMU München 13:50 – 14:10 Adaptive non-linear bias correction for visible reflectance data T. Deppisch(1), and L. Bach(2) (1) DWD, (2) MetBW 14:10 – 14:30 Assimilation of remote sensing profiler observations at MeteoSwiss C. Merker(1), D. Leuenberger(1), B. Crezee(1), S. Monhart(2), A. Haefele(3), M. Hervo(3), G. Martucci(3), and M. Arpagaus(1) (1) MeteoSwiss, Zürich, (2) MeteoSwiss, Locarno, (3) MeteoSwiss, Payerne, Switzerland 14:30 – 14:50 Assimilating 3D radar information at convective scales at DWD K. Stephan(1), U. Blahak(1), C. A. Welzbacher(1), K. Khosravian(1), R. Potthast(1,2), C. Schraff(1), and K. Vobig(1) (1) DWD, (2) University of Reading, Department of Mathematics 14:50 – 15:10 Improving radiation forecasts by assimilating visible satellite images in ICON-D2 L. Scheck(1,2), S. Geiss(1), L. Bach(2), A. de Lozar(2), and M. Weissmann(3) (1) Hans-Ertel-Centre / LMU Munich, (2) Deutscher Wetterdienst, (3) University Vienna

Max-Planck-Institut für Meteorologie 15:10 – 15:30 Coﬀee Break (20 min)

Plenary Session: Dynamics and Numerics Chair: tba 15:30 – 15:50 A locally smoothed vertical coordinate to improve fog and low stratus forecasts S. Westerhuis(1,2), and O.Fuhrer (2,3) (1) ETH Zürich, (2) MeteoSwiss, (3) Vulcan Inc. 15:50 – 16:10 Towards the implementation of a transient gravity wave drag parameterization in ICON G. Bölöni(1), Y.-H. Kim(2), S. Borchert(1), and U. Achatz(2) (1) Deutscher Wetterdienst, (2) Goethe University Frankfurt 16:10 – 16:30 ICON model on GPU X. Lapillonne(1), IMPACT and ENIAC team(1,2) (1) MeteoSwiss (2) C2SM, ETHZ

Tuesday 09 March 2021

Solicited Speaker Chair: tba 09:00 – 09:30 Developing the ICON-A model for direct QBO simulations on GPUs M. A. Giorgetta(1), P. Adamidis(2), D. Alexeev(3), V. Clément(4), J. F. Engels(2), M. Esch(1), L. Kornblueh(1), X. Lapillonne(5), P. Marti(4), R. Pincus(6), S. Rast(1), D. Reinert(7), R. Schnur(1), W. Sawyer(8), and U. Schulzweida(1) (1) Max-Planck-Institut für Meteorologie, (2) Deutsches Klimarechenzentrum, (3) NVIDIA, (4) C2SM, (5) MeteoSwiss, (6) University of Colorado Boulder, (7) Deutscher Wetterdienst, (8) Centro Svizzero di Calcolo Scientiﬁco

Plenary Session: Climate Model Application Chair: tba 09:30 – 09:50 Impact of Urban Canopy Parameters on a Megacity’s Modelled Thermal Environment M. Varentsov(1,2,3,4), T. Samsonov(1,2,4), and M. Demuzere(5) (1) Research Computing Center/Faculty of Geography, Lomonosov Moscow State University, Russia, (2) Hydrometeorological Research Center of Russian Federation, Russia (3) A.M. Obukhov Institute of Atmospheric Physics, Russia, (4) Moscow Center for Fundamental and Applied Mathematics, Russia, (5) Department of Geography, Ruhr-University Bochum, Germany 09:50 – 10:10 Evaluation of a high-resolution dynamical downscaling of ERA5 with COSMO-CLM for the North Sea R. Borgers(1), J. Meyers(2), and N.P.M. Van Lipzig(1) (1) KU Leuven, Department of Earth and Environmental Sciences, (2) KU Leuven, Department of Mechanical Engineering 10:10 – 10:30 Exploring hail and lightning mechanisms over the Alpine-Adriatic region using HAILCAST and LPI in a convection-resolving model R. Cui(1), N. Ban(2), M.-E. Demory(1), and C. Schär(1) (1) ETH Zurich, Institute for Atmospheric and Climate Science, (2) University of Innsbruck, Department of Atmospheric and Cryospheric Sciences 10:30 – 10:50 Coﬀee Break (20 min)

Max-Planck-Institut für Meteorologie 10:50 – 11:10 Ten years of reanalysis activities at DWD: review and outlook M. Borsche(1), F. Kaspar(1), D. Niermann(1), J. Ostermöller(1), T. Rösch(1), T. Spangehl(1), R. Potthast(1), J. Keller(1,2,3), and S. Wahl(2,3) (1) Deutscher Wetterdienst, Oﬀenbach, Germany, (2) Hans Ertel-Centre for Weather Research, Bonn, Germany, (3) University of Bonn, Bonn, Germany 11:10 – 11:30 COSMO-CLM Russian Arctic hindcast 1980 – 2016: modelling workﬂow, evaluation techniques and preliminary assessment V. Platonov(1), and M. Varentsov(2,3,4,5) (1) Department of Meteorology and Climatology, Lomonosov Moscow State University, (2) Research Computing Center, Lomonosov Moscow State University, (3) A.M. Obukhov Institute of Atmospheric Physics, (4) Hydrometeorological Research Center of Russian Federation, (5) Moscow Center for Fundamental and Applied Mathematics

Invited Speaker Chair: tba 11:30 – 12:30 ICON-Land/JSBACH: A Framework for the Land Component in the ICON Modeling System Reiner Schnur Max Planck Institute for Meteorology 12:30 – 13:30 Lunch Break

13:30– 15:00 Poster Session Clouds, Chemistry, Aerosol and Radiation I: P01, P04, P07 Planetary Boundary Layer I: P24, P27 Veriﬁcation (NWP) and Evaluation (Climate): P32, P35, P38, P41

15:00 – 15:30 Coﬀee Break (30 min)

Plenary Session: Climate Model Application Chair: tba 15:30 – 15:50 Current and future large-scale dynamical inﬂuences on Lake Victoria’s thunderstorms J. Van de Walle(1), W. Thiery(2), and N. P.M. van Lipzig(1) (1) KU Leuven, (2) Vrije Universiteit Brussel 15:50 – 16:10 Austrian Test Case: CCLM results in diﬀerent warming scenarios A. A. N. Mishra(1), D. Maraun(1), and H. Truhetz(1) (1) Wegener Center - University of Graz 16:10 – 16:30 Evaluation of Convection-permitting simulations for Germany using gridded observations on high temporal resolution M. Haller(1), J. Brauch(1), S. Brienen(1), and B. Früh(1) (1) Deutscher Wetterdienst 16:30 – Icebreaker

Wednesday 10 March 2021

Solicited Speaker Chair: tba 09:00 – 09:30 Advances in forecast quality achieved with ICON-D2, and upcoming further development steps Günther Zängl Deutscher Wetterdienst

Max-Planck-Institut für Meteorologie Plenary Session: NWP Model Applications and Case Studies Chair: tba 09:30 – 09:50 Case study of an Arctic atmospheric river with the ICON model H. Bresson(1), A. Rinke(1), V. Schemann(2), M. Mech(2), S. Crewell(2), C. Viceto(3), I. Gorodetskaya(3), and K. Ebell(2) (1) Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam, Germany, (2) Institute of Geophysics and Meteorology, University of Cologne, Cologne, Germany, (3) Department of Physics and CESAM, University of Aveiro, Aveiro, Portugal 09:50 – 10:10 Impact of different external parameters on Turin UHI with COSMO at 1km F. Bassani(1), V. Garbero(2), and M. Milelli(2,3) (1) Polytechnic of Turin, Italy, (2) Arpa Piemonte, Italy, (3) CIMA Foundation, Italy 10:10 – 10:30 Towards understanding the role of uncertainty in microphysical processes for warm conveyor belt ascent using microphysical heating rates along online trajectories in ICON A. Oertel(1), A.K. Miltenberger(2), C.M. Grams(1), and C. Hoose(1) (1) Institute of Meteorology and Climate Research (IMK-TRO), Karlsruhe Institute of Technology (KIT), (2) Institute for Atmospheric Physics, Johannes Gutenberg University Mainz 10:30 – 10:50 Coffee Break (20 min) 10:50 – 11:10 Interaction between stratospheric equatorial waves and gravity waves and its implication in QBO simulation Y.-H. Kim(1), and U. Achatz(1) (1) Goethe-Universität Frankfurt am Main 11:10 – 11:30 How do mesoscale weather systems interact with off-shore wind farms: A study for the Kattegat (Denmark, Sweden) with the mesoscale model COSMO-CLM and satellite scatterometer data J. Neirynck(1), J. Van de Walle(1), A. Stoffelen(2), J. Meyers(3), and N. van Lipzig(1) (1) Department of Earth and Environmental Sciences KU Leuven, (2) R& D Satellite Observations KNMI, (3) Department of Mechanical Engineering KU Leuven 11:30 – 11:50 Representation of the urban environment in ICON-LAM A. Valmassoi(1,2), and J. D. Keller(1,3) (1) Hans-Ertel-Centre for Weather Research, Climate Monitoring and Diagnostics (2) University of Bonn (3) Deutscher Wetterdienst, Offenbach, Germany 11:50 – 12:10 Sensitivity of gravity wave drag in seasonal experiments with ICON: Stratospheric dynamics and pathways R. Köhler(1), D. Handorf(1), R. Jaiser(1), and K. Dethloff(1) (1) Alfred-Wegener-Institut 12:10 – 12:30 Potential links between tropospheric and stratospheric extremes during the winter of 2019/20 P. Rupp(1), S. Löffel(1,2), H. Garny(1,2), and T. Birner(1,2) (1) LMU Munich, (2) DLR Oberpfaffenhofen 12:30 – 13:30 Lunch Break

13:30– 15:00 Poster Session Clouds, Chemistry, Aerosol and Radiation II: P10, P19, P22 NWP Model Applications and Case Studies I: P02, P05, P08, P11 Climate Model Application: P03, P06, P09, P12 Soil, Vegetation and Ocean: P23, P26, P29

15:00 – 15:20 Coﬀee Break (20 min)

Max-Planck-Institut für Meteorologie Solicited Speaker Chair: tba 15:20 – 15:50 Once upon a Time at DWD - The COSMO-Model Ulrich Schättler Deutscher Wetterdienst

Plenary Session: NWP Model Applications and Case Studies Chair: tba 15:50 – 16:10 SINFONY - the combination of Nowcasting and Numerical Weather Prediction on the convective scale at DWD U. Blahak(1), and the SINFONY-Team(1) (1) Deutscher Wetterdienst 16:10 – 16:30 Evaluation of ICON-LAM Forecasting of a Strong Rain Event at the Coast of Sao Paulo State in Brazil Reinaldo.B. Silveira(1), Gilberto.R.Bonatti (2), D. Rieger(3), J. M. D. Mol(2), and R. R. dos Santos(2) 1) Sistema Meteorológico do Paraná, SIMEPAR, Curitiba, Paraná, Brazil, (2) Instituto Nacional de Meteorologia, INMET, Brasília, DF, Brazil, (3) Deutscher Wetterdienst, Oﬀenbach.

Thursday 11 March 2021

Solicited Speaker Chair: tba 09:00 – 09:30 HPC Infrastructure of ICON for high-res simulations Panagiotis Adamidis German Climate Computing Center DKRZ

Plenary Session: Planetary Boundary Layer Chair: tba 09:30 – 09:50 The ICON single column mode I. B. Duran(1), M. Köhler(2), A. Eichhorn-Müller(2), V. Maurer(2), J. Schmidli(1), A. Schomburg(2), D. Klocke(2), T. Göcke(2), S. Schäfer(2), L. Schlemmer(2), and N. Dewani(1) (1) Goethe University Frankfurt (2) Deutscher Wetterdienst 09:50 – 10:10 An improved sea ice parameterization and tile approach in CCLM G. Heinemann, L. Schefczyk, and R. Zentek Environmental Meteorology, University of Trier 10:10 – 10:30 Evaluation of thermally driven local winds in the Swiss Alps simulated by COSMO-1 J. Schmidli, and J. Quimbayo-Duarte Hans Ertel Centre for Weather Research and Goethe University Frankfurt, Frankfurt/Main, Germany 10:30 – 10:50 Coﬀee Break (20 min)

Plenary Session: Verification (NWP) and Evaluation (Climate) Chair: tba 10:50 – 11:10 Object based verification of radar-reflectivities on the convective scale G. Pante(1), M. Hoff(1), and U. Blahak(1) (1) Deutscher Wetterdienst, Offenbach, Germany

Max-Planck-Institut für Meteorologie 11:10 – 11:30 Multilayer cloud conditions in trade wind shallow cumulus – confronting two ICON model derivatives with airborne observations M. Jacob(1), P. Kollias(1,2), F. Ament(3), V. Schemann(1), and S. Crewell(1) (1) Institute for Geophysics and Meteorology, University of Cologne, (2) School of Marine and Atmospheric Sciences, Stony Brook University, (3) Institute for Meteorology, Universität Hamburg

Invited Speaker Chair: tba 11:30 – 12:30 Waves and drag processes in atmospheric models Steve Derbyshire, A. van Niekerk, P. Sheridan Met Oﬃce (UK) 12:30 – 13:30 Lunch Break

13:30– 15:00 Poster Session NWP Model Applications and Case Studies II/Predictability and Ensemble Systems: P14, P17, P20, P39 Planetary Boundary Layer II: P30, P33, P36 Data Assimilation/Dynamics and Numerics/Model Infrastructure and Data Processing: P18, P21, P25

15:00 – 15:30 Coﬀee Break (30 min)

Plenary Session: Predictability and Ensemble Systems Chair: tba 15:30 – 15:50 Choosing the Optimal Sub-Ensemble of Boundary Conditions to Drive Convection Permitting Ensemble P. Khain, A. Shitivelman, Y. Levi, E. Amitai, I. Carmona, A. Baharad, E. Vadislavsky, A. Savir, and N. Stav Israel Meteorological Service 15:50 – 16:10 Statistical and machine learning methods for postprocessing ensemble forecasts of wind gusts B. Schulz(1), and S. Lerch(1) (1) Karlsruhe Institute of Technology (KIT) 16:10 – 16:30 An estimation of the intrinsic predictability limit and required improvements to approach it T. Selz, and G. Craig(1) (1) Meteorologisches Institut, LMU

Friday 12 March 2021

Solicited Speaker Chair: tba 09:00 – 09:30 Status and applications of the modelling system ICON-ART Bernhard Vogel on behalf of the ICON-ART developers and users KIT Karlsruhe

Plenary Session: Clouds, Chemistry, Aerosol and Radiation Chair: tba

Max-Planck-Institut für Meteorologie 09:30 – 09:50 Application of Liquid and Ice Clouds Optical Properties Parametrizations in Numerical Weather Prediction Models H. B. Muskatel(1), U. Blahak(2), P. Khain(1), Y. Levi(1), and Q. Fu(3) (1) IMS, (2) DWD, (3) University of Washington 09:50 – 10:10 New radiation scheme ecRad and impact of uncertainties in radiation and clouds for ICON S. Schäfer(1), M. Köhler(1), R. Hogan(2,3), C. Klinger(4), D. Rieger(1), G. Zängl(1), M. Ahlgrimm(1), and A. de Lozar(1) (1) Deutscher Wetterdienst, (2) European Centre for Medium-Range Weather Forecasts, (3) University of Reading, (4) Ludwig-Maximilians-University Munich 10:10 – 10:30 Efficient generation of synthetic near-infrared satellite images F. Baur(1,2), L. Scheck(1,2), C. Köpken-Watts(1), and R. Potthast(1) (1) Deutscher Wetterdienst, Offenbach, Germany (2) Hans-Ertel-Center for Weather Research / Ludwig-Maximilians-Universität, Munich, Germany 10:30 – 10:50 Coffee Break (20 min) 10:50 – 11:10 Pollen forecasts using ICON-ART in a limited area mode C. Endler(1), S. Muthers(1), J. Förstner(2), T. Hanisch(2), H. Vogel(3), and A. Pauling(4) (1) Deutscher Wetterdienst, Freiburg (2) Deutscher Wetterdienst, Offenbach (3) Institute for Meteorology and Climate Research, Karlsruhe Institute of Technology (4) MeteoSchweiz 11:10 – 11:30 PerduS and PermaStrom: Daily Mineral dust forecasts using ICON-ART V. Bachmann(1), J. Förstner(1), N. Porz(1), T. Hanisch(1), F. Filipitsch(2), A. Hoshyaripour(3), F. Wagner(4), A. Wagner(4), D. Lassahn(5), H. Vogel(3), B. Vogel(3), A. Seifert(1), and D. Majewski(1) (1) Deutscher Wetterdienst, Offenbach (2) Deutscher Wetterdienst, Tauche (3) Institute for Meteorology and Climate Research, Karlsruhe Institute of Technology (4) Deutscher Wetterdienst, Hohenpeißenberg (5) meteocontrol GmbH 11:30 – 11:50 Raikoke eruption 2019: Improving ash and SO2 forecasts by coupling ICON-ART to a plume rise model J. Bruckert(1), G. Hoshyaripour(1), A. Horvath(2), L. Muser(1), F. Prata(3), C. Hoose(1), and B. Vogel(1) (1) Karlsruhe Institute of Technology, (2) University of Hamburg, (3) AIRES Pty. Ltd 11:50 – 12:10 Modeling methane from the North Sea region with ICON-ART C. Scharun(1), R. Ruhnke(1), M. Weimer(1), and P. Braesicke(1) (1) Karlsruhe Institute of Technology - Institute of Meteorology and Climate Research 12:10 – 12:30 Quantification of the effects of aerosol deposition on snow by ensemble simulations A. Rohde(1), S. Werchner(1), G. Hoshyaripour(1), J. Bruckert(1), H. Vogel(1), and B. Vogel(1) (1) Karlsruhe Institute of Technology 12:30 – 13:30 Lunch Break 13:30 – 13:50 Improved Ice Aggregation Formulation in the Seifert-Beheng Two-Moment Microphysics Scheme M. Karrer(1), D. Ori(1), V. Schemann(1), A. Seifert(2), and S. Kneifel(1) (1) Institute of Geophysics and Meteorology (2) Deutscher Wetterdienst (DWD) 13:50 – 14:10 Using Microphysical Piggybacking in ICON to explain the sensitivity of simulated convection to the choice of microphysics scheme A. I. Barrett(1), and C. Hoose(1) (1) Karlsruhe Institute of Technology 14:10 – 14:30 Options and extensions for the stochastic shallow convection scheme in ICON M. Ahlgrimm(1), D. Klocke(1), E. Machulskaya(1), M. Sakradzija(1), and A. Seifert(1) (1) Deutscher Wetterdienst

Max-Planck-Institut für Meteorologie 14:30 – 14:50 Clouds and precipitation in ICON-LAM from radar and SEVIRI observations A. de Lozar(1), A. Seifert(1), R. Posada(1), U. Blahak(1), S. Geiss(2), and L. Scheck(1,2) (1) Deutscher Wetterdienst, (2) LMU München 14:50 – 15:10 Increasing Resolution and Resolving Convection Improve the Simulation of Cloud-Radiative Eﬀects Over the North Atlantic F. Senf(1), A. Voigt(2), N. Clerbaux(3), A. Hünerbein(1), and H. Deneke(1) (1) Leibniz Institute for Tropospheric Research, Leipzig, (2) Karlsruhe Institute of Technology, Karlsruhe, (3) Royal Meteorological Institute of Belgium, Brussels 15:10 – 15:30 Coﬀee Break (20 min)

Plenary Session: Soil, Vegetation and Ocean Chair: tba 15:30 – 15:50 Convergence of Richards Equation and Implications for Inﬁltration and Water Propagation D. Regenass(1), L. Schlemmer(2), and C. Schär(1) (1) Institute for Atmospheric and Climate Science, ETH Zurich, (2) Deutscher Wetterdienst 15:50 – 16:10 PT-SAINT – Outcomes and outlook for multi-layer snow modelling in COSMO V. Sharma(1,2), S. Bellaire(3), L. Braud(3), M. Lehning(1,2), and J.-M. Bettems(3) (1) Snow Processes group, SLF Davos (2) Laboratory of Cryospheric Sciences, EPFL (3) Meteoswiss 16:10 – 16:30 Implementing ICON in TSMP – Coupling strategy and applications S. Poll(1,2,3), A. Ghazemi(1,3), D. C. Voullieme(1,2,3), H.-J. H. Franssen(1,2,3), and S. Kollet(1,2,3) (1) SimLab Terrestrial Systems, Jülich Supercomputing Centre, Research Centre Jülich, Jülich, Germany (2) Institute of Bio- and Geosciences, Agrosphere (IBG-3), Research Centre Jülich, Jülich, Germany (3) Centre for High-Performance Scientiﬁc Computing in Terrestrial Systems, Geoverbund ABC/J, Jülich, Germany

Poster Presentations

Climate Model Application

P03 COSMO-CLM Performance and Projection of Daily and Hourly Temperatures Reaching 50◦C or Higher in Southern Iraq Y. Levi(1), and Y. Mann(2) (1) Israel Meteorological Service, (2) Department of Middle Eastern Studies, Bar-Ilan University P06 Development and Quality Evaluation of an Operational Ensemble-based Regional Reanalysis System T. Rösch(1), M. Borsche(1), F. Kaspar(1), and R. Potthast(1) (1) DWD P09 Using regional reanalysis and satellite data to estimate renewable energy production for applications in the German transport infrastructure J. Ostermöller(1), D. Niermann(1), and F. Kaspar(1) (1) Deutscher Wetterdienst P12 Current convection-permitting COSMO-CLM simulations for Germany S. Brienen, M. Haller, and B. Früh Deutscher Wetterdienst

Clouds, Chemistry, Aerosol and Radiation

Max-Planck-Institut für Meteorologie P01 The eﬀect of spring 2020 lockdown in Moscow on the cloud characteristics according to COSMO-Ru simulations and measurements Y. Khlestova(1), N. Chubarova(2,1), M. Shatunova(1), and G. Rivin(1,2) (1) Hydrometeorological Research Center of Russian Federation (2) Lomonosov Moscow State University P04 How did they get there? The Importance of the Particle History for the Ice Habit J.-N. Welss(1), A. Seifert(1), and C. Siewert(1) (1) Deutscher Wetterdienst P07 An evaluation of kilometre scale ICON simulations of mixed-phase stratocumulus over the Southern Ocean during CAPRICORN V. Ramadoss(1), K. Pfannkuch(1), A. Protat(2), Y. Huang(3), S. Siems(4), and A. Possner(1) (1) Institute for Atmospheric and Environmental Sciences, Goethe University, Frankfurt, Germany, (2) Australian Bureau of Meteorology, Melbourne, Victoria, Australia, (3) The University of Melbourne, School of Earth Sciences, Melbourne, VIC, Australia, (4) Monash University, Melbourne, VIC, Australia P10 Prognostic Ozone for ICON: Enabling UV Forecasts S. Weber(1), R. Ruhnke(1), P. Braesicke(1), and C. Scharun(1) (1) Karlsruhe Institute of Technology P19 Tuning ICON-NWP for Climate applications T. Van Pham(1), S. Brienen(1), K. Fröhlich(1), and B. Früh(1) (1) Deutscher Wetterdienst P22 Investigation of aircraft icing sensitivities using a parameterization respecting droplet spectra S. Werchner(1), C. Kottmeier(1), C. Hoose(1), H. Vogel(1), and B. Vogel(1) Karlsruhe Institute of Technology - Institute of Meteorology and Climate Research

Data Assimilation

P18 EnVAR for ICON-LAM: observations and quality control M. Burba(1), S. Ulbrich(1), S. Hollborn(1), and R. Potthast(1) (1) Deutscher Wetterdienst

Dynamics and Numerics

P21 COSMO-EULAG dynamical core with long timestep capability Z.P. Piotrowski(1)(2) (1) Forschungszentrum Jülich (2) On the leave from the Institute of Meteorology and Water Management - National Research Institute, Warsaw, Poland

Model Infrastructure and Data Processing

P25 Zarr formatted Climate Data in DKRZ’s Swift Cloud Object Storage F. Wachsmann(1), M. Kulüke(1), and G. Siemund(2) (1) Deutsches Klimarechenzentrum, (2) Universität Hamburg

NWP Model Applications and Case Studies

P02 High-resolution Simulations of Atmospheric CO2 with ICON/MESSy B. Kern, and P. Jöckel Institut für Physik der Atmosphäre, Deutsches Zentrum für Luft- und Raumfahrt (DLR) e.V., Oberpfaﬀenhofen P05 A preliminary evaluation of the near-surface evolution of Foehn events in COSMO-1 Y. Tian(1), J. Schmidli(2), and J. Quimbayo-Duarte(1) (1) Goethe University Frankfurt

Max-Planck-Institut für Meteorologie P08 COSMO-GHG simulations of 14C to support the design of a radiocarbon measurement network in Europe M. Jähn(1), and D. Brunner(1) (1) Swiss Federal Laboratories for Material Science and Technology (Empa), Dübendorf, Switzerland P11 First steps towards 1 km horizontal resolution over Germany V. Maurer(1), A. De Lozar(1), and G. Zaengl(1) (1) Deutscher Wetterdienst P14 Lagrangian analysis of an Alpine Foehn event L. Jansing(1), and M. Sprenger(1) (1) Institute for Atmospheric and Climate Science, ETH Zurich P17 Postprocessing of COSMO and IFS ensemble predictions for providing seamless forecasts C. Spirig(1), J. Bhend(1), S. Hemri(1,2), J. Rajczak(1,3), D. Nerini(1), R. Keller(3,1), D. Cattani(1), M. Schaer(1), L. Moret(1), and M.A. Liniger(1) (1) MeteoSwiss, Development of Forecasting, (2) University of Zurich, Dep. of Mathematics, (3) ETH Zurich, Centre for Climate Systems Modelling (C2SM) P20 Improving forecasts of wind resources by including two-way coupling between atmospheric ﬂow and oﬀshore wind farms S. Jamaer(1), J. Meyers(1), and N. P. M. Van Lipzig(1) (1) KU Leuven

Planetary Boundary Layer

P24 Slope winds in the convective boundary layer over mountainous terrain: LES results and parameterization approach J. Weinkaemmerer(1), I. B. Ďurán(1), and J. Schmidli(1) (1) Goethe University Frankfurt P27 Simulations of the Arctic atmospheric boundary layer around the MOSAiC drift track using ICON-LEM D. Littmann, W. Dorn, H. Bresson, M. Maturilli, A. Rinke, and M. Rex Alfred-Wegener-Institute, Helmholtz Centre for Polar and Marine Research, Potsdam, Germany P30 A preliminary analysis of the impacts of small-scale orography on the stable atmospheric boundary layer J. Quimbayo-Duarte(1), and J. Schmidli(2) (1) Hans Ertel Centre for Weather Research and Institute for Atmospheric and Environmental Sciences, (2) Goethe University Frankfurt, Frankfurt/Main, Germany P33 A Budget-Based Turbulence Length Scale Diagnostic I. B. Duran(1), J. Schmidli(1), and S. Reilly(1) (1) Goethe University Frankfurt P36 The two-energies turbulence scheme I. B. Duran(1), and J. Schmidli(1) (1) Goethe University Frankfurt

Predictability and Ensemble Systems

P39 Predictability analysis and veriﬁcation of the Lightning Potential Index (LPI) in the COSMO-D2 high resolution EPS M. Salmi(1), C. Marsigli(2), and M. Dorninger(1) (1) Universität Wien, (2) DWD

Soil, Vegetation and Ocean

Max-Planck-Institut für Meteorologie P23 A fully coupled CCLM2 – ocean – sea ice – ice sheet conﬁguration over an Antarctic-wide domain including heterogeneous sea ice – open ocean air-sea ﬂuxes C. Pelletier(1), S. V. Broucke(2), S. Helsen(2), F. Klein(1), N. van Lipzig(2), H. Goosse(1), L. Zipf(3), K. Haubner(3), F. Pattyn(3), S. Marchi(1), T. Fichefet(1), and F. Massonnet(1) (1) Earth and Life Institute, UCLouvain, Louvain-la-Neuve, Belgium, (2) Department of Earth and Environmental Sciences, KU Leuven, Leuven, Belgium, (3) Laboratoire de Glaciologie, Université Libre de Bruxelles, Brussels, Belgium P26 Projected future changes in Vb-cyclone precipitation and moisture source region characteristics P.K. Pothapakula(1), A. Krug(1,2), A. Obermann(1), T. Keber(1), and B. Ahrens(1) (1) Goethe University, Frankfurt am Main (2) Deutscher Wetterdienst P29 Marine extreme events in high-resolution coupled model simulations G. Eirund(1), M. Münnich(1), M. Leclair(2), and N. Gruber(1,2) (1) Environmental Physics, Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, (2) Center for Climate Systems Modeling (C2SM), ETH Zurich

Veriﬁcation (NWP) and Evaluation (Climate)

P32 Preliminary tests with ICON-LAM and comparison with COSMO-LM at high resolution over Italy C. De Lucia(1), A. Mastellone(2), P. Schiano(1), and E. Bucchignani(1,2) (1) CMCC Foundation, (2) CIRA Italian Aerospace Research Center P35 Comparison of calculated by COSMO-SIB and ICON-SIB models temperature proﬁles in the boundary layer with available observation data for Novosibirsk city A. Gochakov(1), V. Tokarev(1), and A. Kolker(1,2) (1) Siberian Regional Hydrometeorological Research Institute, (2) Novosibirsk State Technical University P38 Polarimetric radar forward operator for model validation and data assimilation J. Mendrok(1), and U. Blahak(1) (1) Deutscher Wetterdienst P41 Temperature and radiation biases in COSMO-REA6 and their role for representation of extreme events D. Niermann(1), T. Spangehl(1), and F. Kaspar(1) (1) Deutscher Wetterdienst

Max-Planck-Institut für Meteorologie