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Publications of Ulrich Löhnert

2018

Illingworth, A. J., Cimini, D., Haefele, A., Haeffelin, M., Hervo, M., Kotthaus, S., Löhnert, U., Martinet, P., Mattis, I., O’Connor, E. J., & Potthast, R. 2018, Can Existing Ground-Based Profiling Instruments Improve European Weather Forecasts?, Bulletin of the American Meteorological Society - Early Online Release, doi:10.1175/BAMS-D-17-0231.1

Küchler, N., Kneifel, S., Kollias, P., & Löhnert, U. 2018, Revisiting liquid water content retrievals in warm stratified clouds: The modified Frisch, Geophysical Research Letters, 45, 9323, doi:10.1029/2018GL079845

2017

Ebell, K., Löhnert, U., Päschke, E., Orlandi, E., Schween, J. H., & Crewell, S. 2017, A 1-D variational retrieval of temperature, humidity, and liquid cloud properties: Performance under idealized and real conditions, J Geophys Res Atmos, doi:10.1002/2016JD025945

Acquistapace, C., Kneifel, S., Löhnert, U., Kollias, P., Maahn, M., & Bauer-Pfundstein, M. 2017, Optimizing observations of drizzle onset with millimeter-wavelength radars, Atmospheric Measurement Techniques, 10, 1783, doi:10.5194/amt-10-1783-2017

De Angelis, F., Cimini, D., Löhnert, U., Caumont, O., Haefele, A., Pospichal, B., Martinet, P., Navas-Guzmán, F., Klein-Baltink, H., Dupont, J. C., & Hocking, J. 2017, Long-term observations minus background monitoring of ground-based brightness temperatures from a microwave radiometer network, Atmospheric Measurement Techniques, 10, 3947

Küchler, N., Kneifel, S., Löhnert, U., Kollias, P., Czekala, H., & Rose, T. 2017, A W-band radar-radiometer system for accurate and continuous monitoring of clouds and precipitation, J Atmos Oceanic Tech, doi:10.1175/JTECH-D-17-0019.1

Maahn, M., & Löhnert, U. 2017, Potential of higher-order moments and slopes of the radar Doppler spectrum for retrieving microphysical and kinematic properties of Arctic ice clouds, J Appl Meteor Climatol, 56, 263, doi:10.1175/JAMC-D-16-0020.1

Macke, A., Seifert, P., Baars, H., Barthlott, C., Beekmans, C., Behrendt, A., Bohn, B., Brück, M., Bühl, J., Crewell, S., Damian, T., Deneke, H., Düsing, S., Foth, A., Di Girolamo, P., Hammann, E., Heinze, R., Hirsikko, A., Kalisch, J., Kalthoff, N., Kinne, S., Kohler, M., Löhnert, U., Madhavan, B. L., Maurer, V., Muppa, S. H., Schween, J., Serikov, I., Siebert, H., Simmer, C., Späth, F., Steinke, S., Träumner, K., Trömel, S., Wehner, B., Wieser, A., Wulfmeyer, V., & Xie, X. 2017, The HD(CP)2 Observational Prototype Experiment HOPE – An Overview., Atmos Chem Phys, 17, 4887, doi:10.5194/acp-17-4887-2017

Nehrir, A. R., Kiemle, C., Lebsock, M. D., Kirchengast, G., Buehler, S. A., Löhnert, U., Liu, C.-L., Hargrave, P. C., Barrera-Verdejo, M., & Winker, D. M. 2017, Emerging Technologies and Synergies for Airborne and Space-Based Measurements of Water Vapor Profiles, Surveys in Geophysics, 38, 1445, doi:10.1007/s10712-017-9448-9

2016

Marke, T., Ebell, K., Löhnert, U., & Turner, D. D. 2016, Statistical retrieval of thin liquid cloud microphysical properties using ground-based infrared and microwave observations, J Geophys Res Atmos, 121, 14,558, doi:10.1002/2016JD025667

Maahn, M., & Löhnert, U. 2016, Potential of higher-order moments and slopes of the radar Doppler spectrum for retrieving microphysical and kinematic properties of Arctic ice clouds, J Appl Meteor Climatol, doi:10.1175/JAMC-D-16-0020.1

Küchler, N., Turner, D. D., Löhnert, U., & Crewell, S. 2016a, Calibrating ground-based microwave radiometers: Uncertainty and drifts, Radio Sci, 51, 311, doi:10.1002/2015RS005826

Caumont, O., Cimini, D., Löhnert, U., Alados-Arboledas, L., Bleisch, R., Buffa, F., Ferrario, M. E., Haefele, A., Huet, T., Madonna, F., & Pace, G. 2016, Assimilation of humidity and temperature observations retrieved from ground-based microwave radiometers into a convective-scale NWP model, QJR Meteorol Soc, 142, 2692, doi:10.1002/qj.2860

Barrera-Verdejo, M., Crewell, S., Löhnert, U., Orlandi, E., & Di Girolamo, P. 2016, Ground-based lidar and microwave radiometry synergy for high vertical resolution absolute humidity profiling, Atmos Meas Tech, 9, 4013, doi:10.5194/amt-9-4013-2016

Küchler, N., Turner, D. D., Löhnert, U., & Crewell, S. 2016b, Calibrating ground-based microwave radiometers: Uncertainty and drifts., Radio Sci, 51, 311, doi:10.1002/2015RS005826

2015

Maahn, M., Löhnert, U., Kollias, P., Jackson, R., & McFarquhar, G. 2015, Developing and Evaluating Ice Cloud Parameterizations for Forward Modeling of Radar Moments Using In Situ Aircraft Observations, J Atmos Oceanic Technol, doi:10.1175/JTECH-D-14-00112.1

Steinke, S., Eikenberg, S., Löhnert, U., Dick, G., Klocke, D., Di Girolamo, P., & Crewell, S. 2015, Assessment of small-scale integrated water vapour variability during HOPE, Atmos Chem Phys, 15, 2675, doi:10.5194/acp-15-2675-2015

Simmer, C., Thiele-Eich, I., Masbou, M., Amelung, W., Bogena, H., Crewell, S., DiekKrüger, B., Ewert, F., Hendricks Franssen, H., Huisman, J., Kemna, A., Klitzsch, N., Kollet, S., Langensiepen, M., Löhnert, U., Rahman, A., Rascher, U., Schneider, K., Schween, J., Shao, Y., Shrestha, P., Stiebler, M., Sulis, M., Vanderborght, J., Vereecken, H., Kruk, J. van der, Waldhoff, G., & Zerenner, T. 2015, Monitoring and Modeling the Terrestrial System from Pores to Catchments: The Transregional Collaborative Research Center on Patterns in the Soil–Vegetation–Atmosphere System, Bull Amer Meteor Soc, 96, 1765, doi:10.1175/BAMS-D-13-00134.1

2014

Kneifel, S., Redl, S., Orlandi, E., Löhnert, U., Cadeddu, M.-P., Turner, D. D., & Chen, M.-T. 2014, Absorption Properties of Supercooled Liquid Water between 31 and 225 GHz: Evaluation of Absorption Models Using Ground-based Observations, ournal of Applied Meteorology and Climatology, e-View, doi:10.1175/JAMC-D-13-0214.1

Steinke, S., Löhnert, U., Crewell, S., & Liu, S. 2014, Water Vapor Tomography With Two Microwave Radiometers, IEEE Geoscience and Remote Sensing Letters, 11, 419, doi:10.1109/LGRS.2013.2264354

Schween, J. H., Hirsikko, A., Löhnert, U., & Crewell, S. 2014, Mixing layer height retrieval with ceilometer and Doppler lidar: from case studies to long-term assessment, Atmos Meas Tech Discuss, 4275, doi:10.5194/amtd-7-4275-2014

Löhnert, U., Schween, J. H., Acquistapace, C., Ebell, K., Maahn, M., Barreraverdejo, M., Hirsikko, A., Bohn, B., Knaps, A., O’Connor, E., Simmer, C., Wahner, A., & Crewell, S. 2014, JOYCE: Jülich Observatory for Cloud Evolution, Bulletin of the American Meteorological Society, doi:10.1175/BAMS-D-14-00105.1

2013

Ebell, K., Orlandi, E., Hünerbein, A., Löhnert, U., & Crewell, S. 2013, Combining ground and satellite based measurements in the atmospheric state retrieval: Assessment of the information content, Journal of Geophysical Research, 18, 6940, doi:10.1002/jgrd.50548

Maschwitz, G., Löhnert, U., Crewell, S., Rose, T., & Turner, D. D. 2013, Investigation of Ground-Based Microwave Radiometer Calibration Techniques at 530 hPa, Atmos Meas Tech, 6, 2641, doi:10.5194/amtd-6-989-2013

Meunier, V., Löhnert, U., Kollias, P., & Crewell, S. 2013, Biases caused by the Instrument Bandwidth and Beam Width on Simulated Brightness Temperature Measurements from Scanning Microwave Radiometers, Atmos Meas Tech, 6, 1171, doi:10.5194/amt-6-1171-20135

Steinke, S., Löhnert, U., Crewell, S., & Liu, S. 2013, Water vapor tomography with two microwave radiometers, IEEE Geosci Remote Sens Lett, doi:10.1109/LGRS.2013.2264354

Turner, D. D., & Löhnert, U. 2013, Information Content and Uncertainties in Thermodynamic Profiles Retrieved from the Ground-Based Atmospheric Emitted Radiance Interferometer (AERI), Journal of Applied Meteorology and Climatology

2012

Löhnert, U., & Maier, O. 2012, Operational profiling of temperature using ground-based microwave radiometry at Payerne: prospects and challenges, Atmospheric Measurement Techniques, 5, 1121, doi:10.5194/amt-5-1121-2012

Meunier, V., Löhnert, U., Kollias, P., & Crewell, S. 2012, Biases caused by the Instrument Bandwidth and Beam Width on Simulated Brightness Temperature Measurements from Scanning Microwave Radiometers, Atmospheric Measurement Techniques Discussion, 5, 8085, doi:10.5194/amtd-5-8085-2012

Xie, X., Löhnert, U., Kneifel, S., & Crewell, S. 2012, Snow particle orientation observed by ground-based microwave radiometry, Journal of Geophysical Research, 117, doi:10.1029/2011JD016369

2011

Schween, J. H., Crewell, S., & Löhnert, U. 2011, Horizontal-humidity gradient from one single-scanning microwave Radiometer, IEEE Geoscience and Remote Sensing Letters, 8, 336, doi:10.1109/LGRS.2010.2072981

Löhnert, U., Kneifel, S., Battaglia, A., Hagen, M., Hirsch, L., & Crewell, S. 2011, A multi-sensor approach towards a better understanding of snowfall microphysics: The TOSCA project, Bulletin of the American Meteorological Society, 92, 613, doi:10.1175/2010BAMS2909.1

Ebell, K., Crewell, S., Löhnert, U., Turner, D., & O’Connor, E. 2011, Cloud statistics and cloud radiative effect for a lowmountain site, Quarterly Journal of the Royal Meteorological Society, 137, 306, doi:10.1002/qj.748

2010

Kneifel, S., Löhnert, U., Battaglia, A., Crewell, S., & Siebler, D. 2010, Snow scattering signals in ground-based passive microwave measurements, Journal of Geophysical Research, 115, doi:10.1029/2010JD013856

Ebell, K., Löhnert, U., Crewell, S., & Turner, D. 2010, On characterizing the error in a remotely sensed liquid water content profile, Atmospheric Research, 98, 57, doi:10.1016/j.atmosres.2010.06.002

2009

Crewell, S., Ebell, K., Löhnert, U., & Turner, D. 2009, Can liquid water profiles be retrieved from passive microwave zenith observations?, Geophysical Research Letters, 36, doi:10.1029/2008GL036934

Löhnert, U., Turner, D., & Crewell, S. 2009, Ground-Based Temperature and Humidity Profiling Using Spectral Infrared and Microwave Observations. Part I: Simulated Retrieval Performance in Clear-Sky Conditions, Journal of Applied Meteorology and Climatology, 48, 1017, doi:10.1175/2008JAMC2060.1

Kneifel, S., Crewell, S., Löhnert, U., & Schween, J. H. 2009, Investigating Water Vapor Variability by Ground-Based Microwave Radiometry: Evaluation Using Airborne Observations, IEEE Geoscience and Remote Sensing Letters, 6, 157, doi:10.1109/LGRS.2008.2007659

Turner, D., Caddedu, M. P., Löhnert, U., Crewell, S., & Vogelmann, A. M. 2009, Modifications to the water vapor continuum in the Microwave suggested by ground-based 150 GHz Observations, IEEE Transactions on Geoscience and Remote Sensing, 47, 3326, doi:10.1109/TGRS.2009.2022262

2008

Löhnert, U., Crewell, S., Krasnov, O., O’Connor, E., & Russchenberg, H. 2008, Advances in continuously profiling the thermodynamic state of the boundary layer: Integration of measurements and methods, Journal of Atmospheric and Oceanic Technology, 25, 1251, doi:10.1175/2007JTECHA961.1

Nörenberg, D., Crewell, S., Löhnert, U., Rose, T., & Martellucci, A. 2008, A Novel Microwave Radiometer for Assessment of Atmospheric Propagation Conditions for 10 and 90 GHz Frequency Bands, in 2008 MICROWAVE RADIOMETRY AND REMOTE SENSING OF THE ENVIRONMENT, 184

2007

Crewell, S., & Löhnert, U. 2007a, Accuracy of boundary layer temperature profiles retrieved with multifrequency multiangle microwave radiometry, IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 45, 2195, doi:10.1109/TGRS.2006.888434

Löhnert, U., Meijgaard, E. van, Baltink, H. K., Groß, S., & Börs, R. 2007, Accuracy assessment of an integrated profiling technique for operationally deriving profiles of temperature, humidity, and cloud liquid water, Journal of Geophysical Research (Atmospheres), 112, 4205, doi:10.1029/2006JD007379

Crewell, S., & Löhnert, U. 2007b, Accuracy of boundary layer temperature profiles retrieved with multi-frequency, multi-angle microwave radiometry, IEEE Transactions on Geoscience and Remote Sensing, 45, 2195, doi:10.1109/TGRS.2006.888434

2006

Lipzig, N. P. M. van, Schröder, M., Crewell, S., Ament, F., Chaboureau, J. P., Löhnert, U., Matthias, V., Meijgaard, E. van, Quante, M., Willen, U., & Yen, W. 2006, Model predicted low-level cloud parameters - Part I: Comparison with observations from the BALTEX Bridge Campaigns, Atmospheric Research, 82, 55, doi:10.1016/j.atmosres.2006.01.010

Scholl, T., Pfeilsticker, K., Davis, A. B., Klein Baltink, H., Crewell, S., Löhnert, U., Simmer, C., Meywerk, J., & Quante, M. 2006, Path length distributions for solar photons under cloudy skies: Comparison of measured first and second moments with predictions from classical and anomalous diffusion theories, Journal of Geophysical Research-Atmospheres, 111, doi:10.1029/2004JD005707

Venema, V., Meyer, S., Garcia, S. G., Kniffka, A., Simmer, C., Crewell, S., Löhnert, U., Trautmann, T., & Macke, A. 2006, Surrogate cloud fields generated with the iterative amplitude adapted Fourier transform algorithm, Tellus Series A: Dynamic Meteorology and Oceanography, 58, 104, doi:10.1111/j.1600-0870.2006.00160.x

2005

Rose, T., Crewell, S., Löhnert, U., & Simmer, C. 2005, A network suitable microwave radiometer for operational monitoring of the cloudy atmosphere, Atmospheric Research, 75, 183, doi:10.1016/j.atmosres.2004.12.005

2004

Löhnert, U., Crewell, S., & Simmer, C. 2004, An integrated approach toward retrieving physically consistent profiles of temperature, humidity, and cloud liquid water, Journal of Applied Meteorology, 43, 1295, doi:10.1175/1520-0450(2004)043<1295:AIATRP>2.0.CO;2

Crewell, S., Bloemink, H., Feijt, A., Garcia, S. G., Jolivet, D., Krasnov, O. A., Lammeren, A. van, Löhnert, U., Meijgaard, E. van, Meywerk, J., Quante, M., Pfeilsticker, K., Schmidt, S., Scholl, T., Simmer, C., Schröder, M., Trautmann, T., Venema, V., Wendisch, M., & Willen, U. 2004, The BALTEX Bridge Campaign - An integrated approach for a better understanding of clouds, Bulletin of the American Meteorological Society, 85, 1565, doi:10.1175/BAMS-85-10-1565

2003

Löhnert, U., & Crewell, S. 2003, Accuracy of cloud liquid water path from ground-based microwave radiometry - 1. Dependency on cloud model statistics, Radio Science, 38, doi:10.1029/2002RS002654

Crewell, S., & Löhnert, U. 2003, Accuracy of cloud liquid water path from ground-based microwave radiometry - 2. Sensor accuracy and synergy, Radio Science, 38, doi:10.1029/2002RS002634

Löhnert, U., Crewell, S., & Meijgaard, E. van. 2003a, A method for evaluating model cloud liquid water vertical distribution, in SIXTH INTERNATIONAL SYMPOSIUM ON TROPOSPHERIC PROFILING: NEEDS AND TECHNOLOGIES, 187

Löhnert, U., Crewell, S., & Meijgaard, E. van. 2003b, Results and applications of long-term cloud liquid water profiling by an integrated profiling technique, in 31ST CONFERENCE ON RADAR METEOROLOGY, VOLS 1 AND 2, 771

Löhnert, U., Feingold, G., Frisch, A. S., Shupe, M., & Uttal, T. 2003c, Analysis of two independent methods for retrieving liquid water profiles in spring and summer Arctic boundary clouds, Journal of Geophysical Research, 107, 4219, doi:10.1029/2002JD002861

2002

Löhnert, U., Feingold, G., Frisch, S., Shupe, M., & Uttal, T. 2002, Analysis of Two Independent Ground-based Methods For Deriving Liquid Water Profiles During The Sheba Experiment, EGS XXVII General Assembly, Nice, 21-26 April 2002, abstract #3766, 27, 3766

2001

Crewell, S., Czekala, H., Löhnert, U., Simmer, C., Rose, T., & Zimmermann, R. 2001, Microwave Radiometer for Cloud Carthography: A 22-channel ground-based microwave radiometer for atmospheric research, Radio Science, 36, 621

Löhnert, U., Crewell, S., Simmer, C., & Macke, A. 2001, Profiling cloud liquid water by combining active and passive microwave measurements with cloud model statistics, Journal of Atmospheric and Oceanic Technology, 18, 1354

2000

Crewell, S., Löhnert, U., Lammeren, A. van, & Quante, M. 2000, Cloud remote sensing by combining synergetic sensor information, Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere, 25, 1043

1999

Crewell, S., Hasse, G., Löhnert, U., Mebold, H., & Simmer, C. 1999, A ground based multi-sensor system for the remote sensing of clouds, Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere, 24, 207