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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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https://doi.org/10.5194/amt-2020-49
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-2020-49
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  11 Mar 2020

11 Mar 2020

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This preprint is currently under review for the journal AMT.

Synergy of Active- and Passive Remote Sensing: An Approach to Reconstruct Three-Dimensional Cloud Macro- and Microphysics

Lucas Höppler1, Felix Gödde1, Manuel Gutleben2, Tobias Kölling1, Bernhard Mayer1, and Tobias Zinner1 Lucas Höppler et al.
  • 1Meteorological Institute, Ludwig-Maximilians-Universität München (LMU), Munich, Germany
  • 2Institute for Atmospheric Physics, German Aerospace Center (DLR), Oberpfaffenhofen, Germany

Abstract. This paper presents a method to retrieve three-dimensional cumulus cloud macro- and microphysics measured by remote sensing instruments on the German research aircraft HALO. This is achieved by combining our hyper-spectral pushbroom spectrometer specMACS with active and passive remote sensing instruments, such as a lidar, a microwave radiometer, a radar and dropsondes. Two-dimensional cloud information such as cloud size, optical thickness, effective radius and thermodynamic phase are retrieved by specMACS with established remote sensing methods. Information of the other active and passive remote sensing instruments with a smaller field-of-view are mapped to the wider specMACS swath following Barker et al. (2011). The combination of specMACS with passive and active remote sensing quantities, for example, the Cloud Top Height from lidar measurements, allows new possibilities: three-dimensional cloud macrophysics can be reconstructed. Applying a sub-adiabatic microphysical model constrained with measurements allows to extend the measured quantities to a three-dimensional representation of microphysics. A consistency check by means of a three-dimensional radiative transfer simulation of the specMACS observations of these derived three-dimensional cloud fields shows good agreement.

Lucas Höppler et al.

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Status: final response (author comments only)
Status: final response (author comments only)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
  • RC1: 'Comments', Anonymous Referee #1, 09 May 2020 Printer-friendly Version
  • RC2: 'review', Anonymous Referee #2, 28 Jul 2020 Printer-friendly Version

Lucas Höppler et al.

Data sets

Liquid water path and integrated water vapor over the tropical Atlantic during NARVAL2 M. Jacob, F. Ament, M. Gutleben, H. Konow, M. Mech, M. Wirth, and S. Crewell https://doi.org/10.26050/WDCC/HALO_measurements_6

HALO Microwave Package measurements during Next-generation Remote sensing for VALidation Studies 2 (NARVAL2) H. Konow, M. Jacob, F. Ament, S. Crewell, F. Ewald, M. Hagen, L. Hirsch, F. Jansen, M. Mech, and B. Stevens https://doi.org/10.1594/WDCC/HALO_measurements_3

Lucas Höppler et al.

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