Evidence for Changes in Arctic Cloud Phase ...
Document type :
Article dans une revue scientifique: Article original
DOI :
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Title :
Evidence for Changes in Arctic Cloud Phase Due to Long‐Range Pollution Transport
Author(s) :
Coopman, Quentin [Auteur]
1294|||Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA] (VALID)
Riedi, Jerome [Auteur]
1294|||Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA] (VALID)
Finch, D. P. [Auteur]
University of Edinburgh [Edin.]
Garrett, Timothy J. [Auteur]
University of Utah
1294|||Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA] (VALID)
Riedi, Jerome [Auteur]
1294|||Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA] (VALID)
Finch, D. P. [Auteur]
University of Edinburgh [Edin.]
Garrett, Timothy J. [Auteur]
University of Utah
Journal title :
Geophysical Research Letters
Abbreviated title :
Geophysical Research Letters
Volume number :
45
Publisher :
American Geophysical Union (AGU)
Publication date :
2018-10-10
HAL domain(s) :
Planète et Univers [physics]/Océan, Atmosphère
English abstract : [en]
Reduced precipitation rates allow pollution within air parcels from midlatitudes to reach the Arctic without being scavenged. We use satellite and tracer transport model data sets to evaluate the degree of supercooling ...
Show more >Reduced precipitation rates allow pollution within air parcels from midlatitudes to reach the Arctic without being scavenged. We use satellite and tracer transport model data sets to evaluate the degree of supercooling required for 50% of a chosen ensemble of low‐level clouds to be in the ice phase for a given meteorological regime. Our results suggest that smaller cloud droplet effective radii are related to higher required amounts of supercooling but that, overall, pollution plumes from fossil fuel combustion lower the degree of supercooling that is required for freezing by approximately 4 °C. The relationship between anthropogenic plumes and the freezing transition temperature from liquid to ice remains to be explained.Show less >
Show more >Reduced precipitation rates allow pollution within air parcels from midlatitudes to reach the Arctic without being scavenged. We use satellite and tracer transport model data sets to evaluate the degree of supercooling required for 50% of a chosen ensemble of low‐level clouds to be in the ice phase for a given meteorological regime. Our results suggest that smaller cloud droplet effective radii are related to higher required amounts of supercooling but that, overall, pollution plumes from fossil fuel combustion lower the degree of supercooling that is required for freezing by approximately 4 °C. The relationship between anthropogenic plumes and the freezing transition temperature from liquid to ice remains to be explained.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
CNRS
CNRS
Collections :
Research team(s) :
Interactions Rayonnement Nuages (IRN)
Submission date :
2024-01-09T17:32:56Z
2024-01-09T17:59:05Z
2024-02-23T13:23:27Z
2024-02-27T08:33:21Z
2024-04-16T14:46:39Z
2024-01-09T17:59:05Z
2024-02-23T13:23:27Z
2024-02-27T08:33:21Z
2024-04-16T14:46:39Z
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- Geophysical Research Letters - 2018 - Coopman - Evidence for Changes in Arctic Cloud Phase Due to Long%E2%80%90Range Pollution.pdf
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