Midlatitude mixed-phase stratocumulus clouds and their interactions with aerosols: how ice processes affect microphysical, dynamic, and thermodynamic development in those clouds and interactions?

<p>Midlatitude mixed-phase stratocumulus clouds and their interactions with aerosols remain poorly understood. This study examines the roles of ice processes in those clouds and their interactions with aerosols using a large-eddy simulation (LES) framework. Cloud mass becomes much lower in the...

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Autores principales:	S. S. Lee, K.-J. Ha, M. G. Manoj, M. Kamruzzaman, H. Kim, N. Utsumi, Y. Zheng, B.-G. Kim, C. H. Jung, J. Um, J. Guo, K. O. Choi, G.-U. Kim
Formato:	article
Lenguaje:	EN
Publicado:	Copernicus Publications 2021
Materias:	Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/210abd8036a4491bac793ba7357f5e88
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spelling	oai:doaj.org-article:210abd8036a4491bac793ba7357f5e882021-11-19T07:45:08ZMidlatitude mixed-phase stratocumulus clouds and their interactions with aerosols: how ice processes affect microphysical, dynamic, and thermodynamic development in those clouds and interactions?10.5194/acp-21-16843-20211680-73161680-7324https://doaj.org/article/210abd8036a4491bac793ba7357f5e882021-11-01T00:00:00Zhttps://acp.copernicus.org/articles/21/16843/2021/acp-21-16843-2021.pdfhttps://doaj.org/toc/1680-7316https://doaj.org/toc/1680-7324<p>Midlatitude mixed-phase stratocumulus clouds and their interactions with aerosols remain poorly understood. This study examines the roles of ice processes in those clouds and their interactions with aerosols using a large-eddy simulation (LES) framework. Cloud mass becomes much lower in the presence of ice processes and the Wegener–Bergeron–Findeisen (WBF) mechanism in the mixed-phase clouds compared to that in warm clouds. This is because while the WBF mechanism enhances the evaporation of droplets, the low concentration of aerosols acting as ice-nucleating particles (INPs) and cloud ice number concentration (CINC) prevent the efficient deposition of water vapor. Note that the INP concentration in this study is based on the observed spatiotemporal variability of aerosols. This results in the lower CINC compared to that with empirical dependence of the INP concentrations on temperature in a previous study. In the mixed-phase clouds, the increasing concentration of aerosols that act as cloud condensation nuclei (CCN) decreases cloud mass by increasing the evaporation of droplets through the WBF mechanism and decreasing the intensity of updrafts. In contrast to this, in the warm clouds, the absence of the WBF mechanism makes the increase in the evaporation of droplets inefficient, eventually enabling cloud mass to increase with the increasing concentration of aerosols acting as CCN. Here, the results show that when there is an increasing concentration of aerosols that act as INPs, the deposition of water vapor is more efficient than when there is the increasing concentration of aerosols acting as CCN, which in turn enables cloud mass to increase in the mixed-phase clouds.</p>S. S. LeeS. S. LeeK.-J. HaK.-J. HaK.-J. HaM. G. ManojM. KamruzzamanM. KamruzzamanH. KimH. KimH. KimN. UtsumiY. ZhengB.-G. KimC. H. JungJ. UmJ. GuoK. O. ChoiK. O. ChoiG.-U. KimCopernicus PublicationsarticlePhysicsQC1-999ChemistryQD1-999ENAtmospheric Chemistry and Physics, Vol 21, Pp 16843-16868 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Chemistry QD1-999
spellingShingle	Physics QC1-999 Chemistry QD1-999 S. S. Lee S. S. Lee K.-J. Ha K.-J. Ha K.-J. Ha M. G. Manoj M. Kamruzzaman M. Kamruzzaman H. Kim H. Kim H. Kim N. Utsumi Y. Zheng B.-G. Kim C. H. Jung J. Um J. Guo K. O. Choi K. O. Choi G.-U. Kim Midlatitude mixed-phase stratocumulus clouds and their interactions with aerosols: how ice processes affect microphysical, dynamic, and thermodynamic development in those clouds and interactions?
description	<p>Midlatitude mixed-phase stratocumulus clouds and their interactions with aerosols remain poorly understood. This study examines the roles of ice processes in those clouds and their interactions with aerosols using a large-eddy simulation (LES) framework. Cloud mass becomes much lower in the presence of ice processes and the Wegener–Bergeron–Findeisen (WBF) mechanism in the mixed-phase clouds compared to that in warm clouds. This is because while the WBF mechanism enhances the evaporation of droplets, the low concentration of aerosols acting as ice-nucleating particles (INPs) and cloud ice number concentration (CINC) prevent the efficient deposition of water vapor. Note that the INP concentration in this study is based on the observed spatiotemporal variability of aerosols. This results in the lower CINC compared to that with empirical dependence of the INP concentrations on temperature in a previous study. In the mixed-phase clouds, the increasing concentration of aerosols that act as cloud condensation nuclei (CCN) decreases cloud mass by increasing the evaporation of droplets through the WBF mechanism and decreasing the intensity of updrafts. In contrast to this, in the warm clouds, the absence of the WBF mechanism makes the increase in the evaporation of droplets inefficient, eventually enabling cloud mass to increase with the increasing concentration of aerosols acting as CCN. Here, the results show that when there is an increasing concentration of aerosols that act as INPs, the deposition of water vapor is more efficient than when there is the increasing concentration of aerosols acting as CCN, which in turn enables cloud mass to increase in the mixed-phase clouds.</p>
format	article
author	S. S. Lee S. S. Lee K.-J. Ha K.-J. Ha K.-J. Ha M. G. Manoj M. Kamruzzaman M. Kamruzzaman H. Kim H. Kim H. Kim N. Utsumi Y. Zheng B.-G. Kim C. H. Jung J. Um J. Guo K. O. Choi K. O. Choi G.-U. Kim
author_facet	S. S. Lee S. S. Lee K.-J. Ha K.-J. Ha K.-J. Ha M. G. Manoj M. Kamruzzaman M. Kamruzzaman H. Kim H. Kim H. Kim N. Utsumi Y. Zheng B.-G. Kim C. H. Jung J. Um J. Guo K. O. Choi K. O. Choi G.-U. Kim
author_sort	S. S. Lee
title	Midlatitude mixed-phase stratocumulus clouds and their interactions with aerosols: how ice processes affect microphysical, dynamic, and thermodynamic development in those clouds and interactions?
title_short	Midlatitude mixed-phase stratocumulus clouds and their interactions with aerosols: how ice processes affect microphysical, dynamic, and thermodynamic development in those clouds and interactions?
title_full	Midlatitude mixed-phase stratocumulus clouds and their interactions with aerosols: how ice processes affect microphysical, dynamic, and thermodynamic development in those clouds and interactions?
title_fullStr	Midlatitude mixed-phase stratocumulus clouds and their interactions with aerosols: how ice processes affect microphysical, dynamic, and thermodynamic development in those clouds and interactions?
title_full_unstemmed	Midlatitude mixed-phase stratocumulus clouds and their interactions with aerosols: how ice processes affect microphysical, dynamic, and thermodynamic development in those clouds and interactions?
title_sort	midlatitude mixed-phase stratocumulus clouds and their interactions with aerosols: how ice processes affect microphysical, dynamic, and thermodynamic development in those clouds and interactions?
publisher	Copernicus Publications
publishDate	2021
url	https://doaj.org/article/210abd8036a4491bac793ba7357f5e88
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Midlatitude mixed-phase stratocumulus clouds and their interactions with aerosols: how ice processes affect microphysical, dynamic, and thermodynamic development in those clouds and interactions?

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