ExOb: Talks

Talks given by ExOb members. The presenter is given in bold and underlined. Working group members are given in bold and sorted alphabetically for each year with last name of first author first.

• Marke, T., Haeffelin, M., Villard, E., O’Connor, E., Pospichal, B., et al.: ACTRIS CCRES Updates, E-Profile ET meeting, 4-6 November 2025, Munich, Germany.
• Pfitzenmaier, L., Feuillard, N., Haeffelin, M., Toledo Bittner, F., et al.: EarthCARE CPR validation using ACTRIS' ground-based radar network, 1st ESA-JAXA EarthCARE validation workshop , 15. January 2025, online
• Pfitzenmaier, Lukas, Feuillard, Nathan., Haeffelin, Martial., Toledo Bittner, Felipe., O'Conner Ewan: Doppler velocity validation of EarthCARE cloud profiling radar using ACTRIS ground-based cloud radar network (EVID05), 1st ESA-JAXA EarthCARE validation workshop , 17-20. March 2025, Frascati
• Pospichal, B., L. Pfitzenmaier, N. Feuillard, F. Toledo-Bittner, M. Haeffelin, E. O'Connor, P. Kollias, and U. Löhnert: The ground-based ACTRIS cloud remote sensing network and its use for the validation of EarthCARE satellite observations. DACH Conference Bern, Switzerland, 23-27 June 2025 Presentation
• Raabe, N., M. Toporov, P. Griewank, M. Weißmann, T. Matsunobu, and U. Löhnert: Observational impact assessment of ground-based DIAL water vapor profiling networks with an ensemble sensitivity analysis, Workshop: Smart Earth Observation System Design, 9-11 December, 2025, Cologne, Germany.
• Toporov, M., Löhnert, U.: presentation
• Krishnan, P. S., U. Löhnert , J. H. Schween: EVALUATING HORIZONTAL INHOMOGENEITIES WITH GROUND-BASED MICROWAVE RADIOMETER USING LARGE EDDY SIMULATIONS. DACH Conference Bern, Switzerland, 23-27 June 2025 Presentation
• Löffler, M., Knist, C., Pospichal, B., Claußnitzer, A., and Löhnert, U.: Ground based microwave radiometer – cloud detection, sky-clearing and O-B statistics EMS2025 Ljubliana, Slovenien, 7.-12. Sept. 2025, Abstract

• Burgos Cuevas A., U. Löhnert, D. Turner, B. Pospichal, and T. Marke: Ground-based observations for assessing sensitive and latent heat fluxes in the Atmospheric Boundary Layer over western Germany. 9th Global Energy and Water EXchanges Open Science Conference (GEWEX 2024), 7-12 July 2024, Sapporo, Japan
• Löhnert, U., M. Toporov, T. Nomokonova, P. Griewank, T. Necker, M. Weissmann: Quantifying the Impacts of Ground-based Remote Sensing Networks, 8th WMO Workshop on the Impact of Various Observing Systems on Numerical Weather Prediction and Earth System Prediction, 27-30 May 2024, SMHI, Norrköping, link to final report
• Löhnert, U., and the ExOb Research Group: Ground-based microwave radiometers: Missing puzzle pieces in laying the picture of the atmospheric state, 11th Hans Liebe Lecture @ The 2024 National Radio Science Meeting, 12.01.2024, Boulder, CO, USA
• Löhnert, U., and the ExOb Research Group: Quantifying the impact of atmospheric ground-based remote sensing networks, NOAA Seminar, 11.01.2024, Boulder, CO, USA
• Löhnert, U., and M. Toporov: Enhanced water vapor observations and impacts on severe precipitation forecasting (WV-ENHANCE), 15 May 2024, EMF Talk Series, DWD, Offenbach
• Marke, T., B. Pospichal, T. Böck, P. Martinet, and U. Löhnert: Microwave radiometer data quality monitoring and retrieval development framework for network operation. EMS Annual Meeting 2024, 2-6 September 2024, Historical University of Barcelona, Spain
• Müller, M., Löhnert, U. and Bohn, B.: Quantification of aerosol cloud interaction from a combined ceilometer and cloud radar dataset. ACTRIS Science Conference 2024, May, 15, 2024, Rennes, France
• Pfitzenmaier, L., Löhnert, U., and Kollias, P: Cal/Val of EarthCARE CPR for low cloud and precipitation detection, GIVE Kickoff, March 2024 Munich, Germnay
• Pfitzenmaier, L., Nils Risse, Pavlos Kollias, Bernat Puigdomenech Treserras, and Imke Schirmacher: Using synthetic EarthCARE Cloud Profiling Radar data to develop validation methodologies for ground-based cloud radar sites, April 14-19, 2024, Vienna, Austria.
• Pfitzenmaier, L., Nils Risse , Pavlos Kollias , Bernat Puigdomènech Treserras, Imke Schirmacher, Katia Lamer, et al.: Orbital-radar tool - L1 CPR transformation operator from suborbital observations to synthetic CPR, June 15-18, 2024, Athens, Greece.
• Pfitzenmaier, L., Löhnert, U., and Kollias, P: Cal/Val of EarthCARE CPR for low cloud and precipitation detection, GIVE Kickoff, March 2024 Munich, Germnay
• Pfitzenmaier, L., Haeffelin, M., Feuillard, N., Toledo Bittner, F., et al.: CCRES EarthCARE Cal/Val overview and perspectives, ACTRIS week, November, Matera, Italy
• Pospichal, B., T. Marke, and U. Löhnert: Long-term statistics of water vapor and clouds from microwave radiometer observations in Jülich with focus on cloud properties. ACTRIS Science Conference 2024, May, 15, 2024, Rennes, France Presentation
• Pospichal, B., T. Böck, T. Marke, M. Löffler, U. Löhnert: Network operation of ground-based microwave radiometers in Europe: Uncertainty assessment and consistent retrieval development. Microrad conference, Alexandria, VA, USA, 8-11 April 2024 Presentation
• Schween, J.H., V. Schemann, and U. Loehnert: Water vapor transport into the Atacama desertsimulated with a high resolution atmospheric model. EGU general Assembly 2024, April 14-19, 2024, Vienna, Austria, Abstract, Abstract at EGU2024, Presentation (ppt, with video), presentation (pdf, no video) .

• Böck, T., B. Pospichal, U. Löhnert: Measurement uncertainties of scanning microwave radiometers and their influence on temperature profiling. Annual Meeting of the European Meteorological Society, EMS2023, September 3 - 8, 2023, Bratislava, Slovakia abstract, presentation
• Löffler, M., Knist C., Vural J., Löhnert U.: Ground based microwave radiometer – exploring model based LWP retrievals and artificial sky-clearing, Session JG03 - Remote Sensing and Modelling of the Atmosphere abstract
• Müller, M., Löhnert, U., Bohn, B.: Ceilometer aerosol retrieval and comparison with in-situ tower measurements. EGU23, April, 27, 2023, Vienna, Austria https://doi.org/10.5194/egusphere-egu23-7093
• Müller, M., Löhnert, U., Bohn, B.: Ceilometer Aerosol Measurement and in-situ Comparision. ACTRIS-D annual meeting, June, 14, 2023, Aachen, Germany
• Pfitzenmaier, L., Daehne, A., Kollias, P., Eliasson, S., Thoss, A., Porcacchia, L. Nemuc, A., Pirloaga, R., Antonescu, B., Nicolae, D., O’Connor, E., and von Bismarck, J.: FRM4Radar – Cloud Profiling for Satellite Validation, November 11-15, 2023, Frascati, Italy.
• Pfitzenmaier, L., Risse, N., Kollias, P., Puigdomènech, B., Eliasson, S., Thoss, A., Porcacchia, L. Nemuc, A., Pirloaga, R., Antonescu, B., Nicolae, D., O’Connor, E., and von Bismarck, J.: L1 CPR transformation operator from suborbital observations to synthetic EarthCARE CPR, 2023, Frascati, Italy.
• Pospichal, B., A. Burgos-Cuevas, S. Kneifel, T. Marke, T. Nomokonova, J. Schween, J. Steinheuer, U. Löhnert: Advancing ground-based remote sensing applications for retrieving mean winds, gusts, and PBL structure. AMS 103rd annual meeting, 8-12 January 2023 (online). Presentation
• Schween, J. H., V. Schemann, U. Löhnert: Water vapor transport from the ocean into the Atacama desert from high resolution model runs, Aug 9-11, 2023, CRC1211 Science Conference, University of Cologne, Germany

• Böck, T., B. Pospichal, U. Löhnert: Characterizing the Influence of Obstacles on scanning Microwave Radiometers. Annual Meeting of the European Meteorological Society, EMS2022, September 4 - 9, 2022, Bonn, Germany abstract presentation
• Böck, T., B. Pospichal, U. Löhnert: Uncertainty Assessment of HATPRO Microwave Radiometer Measurements and Calibrations. Lecture Day Extramurale Forschung DWD, EMF 2022 17.5.2022, Offenbach, Germany presentation
• Böck, T., B. Pospichal, U. Löhnert: Uncertainty Assessment of HATPRO Microwave Radiometer Measurements and Calibrations. Annual Meeting of the European Meteorological Society, DACH 2022 21. - 25.3.2022, Leipzig, Germany abstract presentation
• Burgos-Cuevas, A., T. Marke, B. Pospichal, U. Löhnert: Characterization of turbulence and thermodynamic stability in the Atmospheric Boundary Layer for air quality and network applications. ACTRIS Science Conference 2022. - 12.05.2022, Online presentation abstract presentation
• Burgos-Cuevas, A., T. Marke, L. Pfitzenmaier, B. Pospichal, U. Löhnert: Boundary Layer Classification from Doppler Lidar & Microwave Radiometer and its Applications within ACTRIS . ACTRIS-D 2022. - 21.06.2022, Leipzig, Germany presentation
• Burgos-Cuevas, A., A. Magaldi-Hermosillo, D. Adams, J.L. Garcia-Franco, A. Ruiz-Angulo : Comparison between Atmospheric Boundary Layer Height remote sensing-retrievals over a complex topography . EGU 2022. - 27.05.2022, Vienna, Austria, abstract, presentation
• Löffler, M., C. Knist, J. Vural, U. Görsdorf, U. Löhnert: New cloud detection method for a stand-alone ground based microwave radiometer, Annual Meeting of the European Meteorological Society, EMS2022, September 4 - 9, 2022, Bonn, Germany abstract
• Löffler, M.: New cloud detection method for a stand-alone ground based microwave radiometer, BMD Seminar Series, June 14 2022, Köln, Germany
• Löffler, M.: Automatic appraisal and classification of ground based MWR brightness temperature data, ExOb Seminar, December 05 2022, Köln, Germany
• Marke, T., B. Pospichal: ACTRIS MWR Data Processing and Quality Control, PROBE meeting 6-8 Oct 2022, Evora, Portugal presentation
• Müller, M.: Aerosol-Cloud-Interaction at JOYCE, BMD Seminar Series, 05.07.2022, Köln, Germany, presentation
• Nomokonova, T., P. Griewank, U. Löhnert, T. Necker, M. Weissmann: Benefits of Doppler wind lidars to improve short-term low-level wind forecasts, EGU 2022, 3 – 8 April 2022, Vienna, Austria, abstract presentation
• Nomokonova, T., P. Griewank, U. Löhnert, T. Necker, M. Weissmann: Benefits of Doppler wind lidars to improve short-term low-level wind forecasts, EMS 2022, 06.09.2022, Bonn, Germany
• Pospichal, B., M. Müller, and S. Kneifel: Beobachtung von Windprofilen mittels Wolkenradar und Dopplerlidar. DACH 2022 21. - 25.3.2022, abstract
• Schween, J.H., S. Westbrook and U. Löhnert: The connection of Stratocumulus Clouds at the West Coast of South America to environmental parameters, EGU 2022, 3. - 8.4.2022, Vienna, Austria & + Online, presentation
• Steinheuer, J., C. Detring, E. Päschke, F. Beyrich, and U. Löhnert: Two different approaches to derive wind gusts from Doppler wind lidars. DWD FESSTVaL workshop, 18. - 20.5.2022, Offenbach, Germany, presentation
• Steinheuer, J., U. Löhnert, and L. v. Gelder: High-resolution vertical profiling from the three supersites. DWD FESSTVaL workshop, 18. - 20.5.2022, Offenbach, Germany, presentation
• Steinheuer, J., F. Beyrich, C. Detring, S. Fiedler, P. Friederichs, and U. Löhnert: Sub-mesoscale evolution of spatial wind gust patterns measured with three Doppler lidars in a triangle configuration. EGU 2022, 3. - 8.4.2022, Vienna, Austria, abstract presentation
• Steinheuer, J., and U. Löhnert: High-resolution observation of extreme winds at the Sub-Mesoscale with Doppler wind lidars during FESSTVaL. EMS 2022 5. - 9.9.2022, Bonn, Germany, abstract presentation

• Löhnert, U., T. Böck, C. Knist, M. Löffler, T. Nomokonova, B. Pospichal, & the FESSTVaL MWR-Team: FESSTVaL Network of Microwave Radiometers (MWR), FESSTVaL Data Workshop, Lindenberg, 15.11.2021
• Löhnert, U., B. Bohn, T. Mentel, B. Pospichal, L. Pfitzenmaier, T. Marke, A. Burgos: Updates from JOYCE – Jülich Observatory for Cloud Evolution, Friday seminar IEK8 (on-line), 12.11.2021
• Löhnert, U.: Der Treibhauseffekt – Die Grundlagen, Ringvorlesung Klima im Wandel – Verstehen und Erklären, Köln, 25.10.2021
• Löhnert, U. and Exob reserach group: From the ground up – Exploiting new observations for meteorology, CESOC Seminar Series (on-line), 15.10.2021
• Löhnert, U.: Ständig in Bewegung – Unser Klimasystem heute und in Zukunft, Klimavorträge (Junior-Uni), Europaschule, Bornheim, 08.10.2021
• Löhnert, U.: Klima im Wandel - bei uns angekommen?, Klimawandel Vortragsreihe, Bornheim-Brenig, 30.09.2021
• Löhnert, U. & PROBE core group, Ground-based atmospheric boundary layer profiling and data assimilation experiments within the EU COST Action PROBE, WCRP-WWRP Symposium on Data Assimilation and Reanalysis, 13 - 18 September 2021, online abstract
• Löhnert, U., M. Toporov, T. Nomokonova, J. Steinheuer: From the ground up: Re-thinking observations in meteorology, FESSTVaL Summer School 2021 Lecture Series (on-line), 21.06.2021, link
• Löhnert U. and J.H. Schween, 'Atacama coastal clouds and circulation patterns observed with ground based remote sensing (A01)', SFB1211 Earth Evolution at the Dry Limit Seminar May 2021, Presentation
• Nomokonova T., U. Löhnert, T. Necker, P. Griewank, M. Weissmann: Estimation of the benefits of remote-sensing profilers for sustainable energy applications, Retreat of HErZ Climate Monitoring and Diagnostics on Renewable Energy Research, 5 Octorber 2021, EWI (Cologne) presentation
• Nomokonova T., U. Löhnert, T. Necker, P. Griewank, M. Weissmann: Estimation of the benefits of remote-sensing profilers for sustainable energy applications, WCRP-WWRP Symposium on Data Assimilation and Reanalysis, 13 - 18 September 2021, online abstract
• Schween, J.H., U. Löhnert, C. Böhm, S. Crewell, 'Fog in the Atacama and coastal clouds', Fog in Arid Regions, (Zoom)Workshop by A. Siegmund, Heidelberg. Presentation.
• Schween J.H., S. Westbrook, U. Löhnert, 'Stratocumulus Clouds at the West Coast of South America: Observations of Diurnal and Seasonal Cycle', vEGU 2021, abstract, vPICO material
• Steinheuer J., C. Detring, F. Beyrich, U. Löhnert, P. Friederichs, and S. Fiedler : Wind gusts from Doppler lidars. FESSTVaL Data Workshop, Lindenberg, 16.11.2021
• Steinheuer J., C. Detring, F. Beyrich, U. Löhnert, P. Friederichs, and S. Fiedler : New flexible retrieval for gusts and mean winds from Doppler wind lidars, tested for various scanning configurations. EMS 2021 6. - 10.9.2021, abstract
• Steinheuer, J., C. Detring, F. Beyrich, U. Löhnert, P. Friederichs, and S. Fiedler : New flexible retrieval for gusts and mean winds from Doppler wind lidars. EGU 2021 19. - 30.4.2021, abstract presentation