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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 2:36 |
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Conference: Bucharest University Faculty of Physics 2023 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
On the organization of passive shallow cumulus clouds
Authors:
Andrei MARIN (1), Cristian-Valer VRACIU (1,2)
*
Affiliation:
1) Faculty of Physics, University of Bucharest, Bucharest-Magurele, Romania
2) Horia Hulubei National Institute for Physics and Nuclear Engineering, Magurele, Romania
E-mail
andrei.marin2@s.unibuc.ro
Keywords:
Abstract:
The shallow cumulus clouds are ubiquitous in the atmosphere, populating a large part of the subtropical oceans. As a result, numerous studies investigated the organization of cumulus clouds and their interaction with the climate. However, the organization of passive shallow clouds and their impact on the atmospheric convection received very limited attention. In this work, we perform a series of large eddy simulations in order to investigate how the organization and the total cloud cover depends on the relative humidity of the environment. We show that although the active cumulus clouds size only shows a weak correlation with the relative humidity, the passive clouds size is very sensitive to it. We also show that the cloud cover of the shallow cumuli is very sensitive to the relative humidity. We explain the organization of passive shallow cumulus clouds through a conceptual picture.
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