Meteorological conditions favorable for strong anthropogenic aerosol impacts on clouds

Ship-track-like polluted cloud tracks provide a direct way to study aerosol-cloud interactions. Here, we study environmental conditions favorable for pollution tracks' formation. We study polluted cloud tracks forming downwind of localized anthropogenic air pollution hot spots of Norilsk and Ch...

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Bibliographic Details
Published in:Journal of Geophysical Research: Atmospheres
Main Authors: Trofimov, H, Post, P, Gryspeerdt, E, Toll, V
Other Authors: Royal Society
Format: Article in Journal/Newspaper
Language:English
Published: American Geophysical Union (AGU) 2022
Subjects:
0401 Atmospheric Sciences
0406 Physical Geography and Environmental Geoscience
Canada
Norilsk
norilsk
Online Access:http://hdl.handle.net/10044/1/95623
https://doi.org/10.1029/2021jd035871
Description
Summary:Ship-track-like polluted cloud tracks provide a direct way to study aerosol-cloud interactions. Here, we study environmental conditions favorable for pollution tracks' formation. We study polluted cloud tracks forming downwind of localized anthropogenic air pollution hot spots of Norilsk and Cherepovets in Russia and Thompson in Canada. Polluted cloud tracks form on 20%–37% of days with liquid-phase clouds. The large-scale atmospheric circulation largely determines the occurrence of track-favoring conditions. Tracks tend to form in clean and thin clouds under stable and dry conditions that are more often associated with anticyclonic large-scale flow in the studied locations.

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