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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Satellite‐Based Detection of Secondary Droplet Activation in Convective Clouds
Journal of geophysical research. Atmospheres, Vol.127(12), e2022JD036519
27/06/2022
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Abstract
We present a new approach of analyzing and interpreting vertical profiles of cloud microstructure obtained by satellite remote sensing. The method is based on a spectral bin microphysics adiabatic parcel model and aims to elucidate the effects of aerosols on the evolution of convective clouds and related microphysical processes, including the activation of cloud condensation nuclei (CCN), the growth of cloud droplets, and the formation of precipitation. Characteristic features in the vertical profiles of effective radius (re) and temperature (T) reveal different microphysical zones in convective clouds related to the change increase of re with decreasing T. The classification of the different microphysical zones includes the (a) condensational growth of droplets, (b) growth by coalescence, (c) rainout, (d) secondary droplet activation zone (SAZ), (e) mixed‐phase of ice particles and water droplets, and (f) glaciation of the cloud. The detection of the SAZ is introduced here for the first time. This method allows us to identify the activation of aerosol particles above cloud base and their role in the invigoration of deep convective clouds.
Details
- Title
- Satellite‐Based Detection of Secondary Droplet Activation in Convective Clouds
- Creators
- Avichay Efraim - The Hebrew University of JerusalemOliver Lauer - Max Planck Institute for ChemistryDaniel Rosenfeld - The Hebrew University of JerusalemRamon C. Braga - Southern Cross UniversityMarco A. Franco - University of São PauloLeslie A. Kremper - Max Planck Institute for ChemistryYannian Zhu - Nanjing UniversityUlrich Pöschl - Max Planck Institute for ChemistryChristopher Pöhlker - Max Planck Institute for ChemistryMeinrat O. Andreae - UCSDPaulo Artaxo - Southern Cross UniversityAlessandro C. Araújo - Brazilian Agricultural Research CorporationMira L. Pöhlker - Leibniz Institute for Tropospheric Research
- Publication Details
- Journal of geophysical research. Atmospheres, Vol.127(12), e2022JD036519
- Publisher
- American Geophysical Union
- Number of pages
- 14
- Grant note
- Max Planck Society (2017/17047‐0) United States‐Israel Binational Science Foundation (2020809)
- Identifiers
- 991013036351802368
- Copyright
- © 2022. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article