High Sensitivity of Arctic Liquid Clouds to Long‐Range Anthropogenic Aerosol Transport

Coopman, Quentin; Garrett, Timothy J.; Finch, D. P.; Riedi, Jerome

Document type :

Article dans une revue scientifique: Article original

DOI :

10.1002/2017gl075795

Permalink :

http://hdl.handle.net/20.500.12210/100037

Title :

High Sensitivity of Arctic Liquid Clouds to Long‐Range Anthropogenic Aerosol Transport

Author(s) :

Coopman, Quentin [Auteur]

1294|||Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA] (VALID)
Garrett, Timothy J. [Auteur]
Finch, D. P. [Auteur]
Riedi, Jerome [Auteur]

1294|||Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA] (VALID)

Journal title :

Geophysical Research Letters

Abbreviated title :

Geophysical Research Letters

Volume number :

Pages :

372-381

Publisher :

American Geophysical Union (AGU)

Publication date :

2018-01-03

HAL domain(s) :

Planète et Univers [physics]/Océan, Atmosphère

English abstract : [en]

The rate of warming in the Arctic depends upon the response of low‐level microphysical and radiative cloud properties to aerosols advected from distant anthropogenic and biomass‐burning sources. Cloud droplet cross‐section ...
Show more >The rate of warming in the Arctic depends upon the response of low‐level microphysical and radiative cloud properties to aerosols advected from distant anthropogenic and biomass‐burning sources. Cloud droplet cross‐section density increases with higher concentrations of cloud condensation nuclei, leading to an increase of cloud droplet absorption and scattering radiative cross sections. The challenge of assessing the magnitude of the effect has been decoupling the aerosol impacts on clouds from how clouds change solely due to natural meteorological variability. Here we address this issue with large, multi‐year satellite, meteorological, and tracer transport model data sets to show that the response of low‐level clouds in the Arctic to anthropogenic aerosols lies close to a theoretical maximum and is between 2 and 8 times higher than has been observed elsewhere. However, a previously described response of arctic clouds to biomass‐burning plumes appears to be overstated because the interactions are rare and modification of cloud radiative properties appears better explained by coincident changes in temperature, humidity, and atmospheric stability.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS

Collections :

Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518

Research team(s) :

Interactions Rayonnement Nuages (IRN)

Submission date :

2024-01-09T17:30:46Z
2024-01-09T18:01:04Z
2024-02-23T13:17:59Z

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3	20.500.12210/100037*	2024-02-23T13:15:46Z
2	20.500.12210/100037.2	2024-01-09T18:00:32Z
1	20.500.12210/100037.1	2024-01-09T17:30:46Z

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