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Detrainment Dominates CCN Concentrations Around Non-Precipitating Convective Clouds Over the Amazon2.21 MB
Published (Version of record)CC BY-NC-ND V4.0, Open Access
Published (Version of record)CC BY-NC-ND V4.0, Open
Journal article
Detrainment Dominates CCN Concentrations Around Non?Precipitating Convective Clouds Over the Amazon
Geophysical research letters, Vol.49(20), pp.1-11
28/10/2022
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Abstract
We investigated the relationship between the number concentration of cloud droplets (Nd) in ice-free convective clouds and of particles large enough to act as cloud condensation nuclei (CCN) measured at the lateral boundaries of cloud elements. The data were collected during the ACRIDICON-CHUVA aircraft campaign over the Amazon Basin. The results indicate that the CCN particles at the lateral cloud boundaries are dominated by detrainment from the cloud. The CCN concentrations detrained from non-precipitating convective clouds are smaller compared to below cloud bases. The detrained CCN particles from precipitating cloud volumes have relatively larger sizes, but lower concentrations. Our findings indicate that CCN particles ingested from below cloud bases are activated into cloud droplets, which evaporate at the lateral boundaries and above cloud base and release the CCN again to ambient cloud-free air, after some cloud processing. These results support the hypothesis that the CCN around the cloud are cloud-processed.
Details
- Title
- Detrainment Dominates CCN Concentrations Around Non?Precipitating Convective Clouds Over the Amazon
- Creators
- Ramon C. Braga - Southern Cross UniversityDaniel Rosenfeld - Hebrew University of JerusalemMeinrat O. Andreae - Max Planck Institute for BiogeochemistryChristopher Pöhlker - Max Planck Institute for ChemistryUlrich Pöschl - Max Planck Institute for ChemistryChristiane Voigt - Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)Bernadett Weinzierl - University of ViennaManfred Wendisch - MeteorMira L. Pöhlker - Max Planck Institute for ChemistryDaniel Harrison - Southern Cross University
- Publication Details
- Geophysical research letters, Vol.49(20), pp.1-11
- Publisher
- John Wiley & Sons, Ltd
- Number of pages
- 11
- Grant note
- Max Planck Society German Science Foundation Daniel Harrison German Aerospace Center DFG (VO 1504/6‐1)
- Identifiers
- 991013056512902368
- Copyright
- © 2022. The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
- Academic Unit
- Faculty of Science and Engineering; Science
- Language
- English
- Resource Type
- Journal article