Global distribution and climate forcing of marine organic aerosol-Part 2: Effects on cloud properties and radiative forcing
A series of simulations with the Community Atmosphere Model version 5 (CAM5) with a 7-mode Modal Aerosol Model were conducted to assess the changes in cloud microphysical properties and radiative forcing resulting from marine organic aerosols. Model simulations show that the anthropogenic aerosol in...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , , , , |
Format: | Text |
Language: | unknown |
Published: |
2018
|
Subjects: | |
Online Access: | http://infoscience.epfl.ch/record/257443 https://doi.org/10.5194/acp-12-6555-2012 https://infoscience.epfl.ch/record/257443/files/12-6555-2012-acp-12-6555-2012.pdf |
id |
ftinfoscience:oai:infoscience.epfl.ch:257443 |
---|---|
record_format |
openpolar |
spelling |
ftinfoscience:oai:infoscience.epfl.ch:257443 2024-02-27T08:43:30+00:00 Global distribution and climate forcing of marine organic aerosol-Part 2: Effects on cloud properties and radiative forcing Gantt, B. Xu, J. Meskhidze, N. Zhang, Y. Nenes, Athanasios Ghan, S. J. Liu, X. Easter, R. Zaveri, R. 2018-10-15T13:27:46Z http://infoscience.epfl.ch/record/257443 https://doi.org/10.5194/acp-12-6555-2012 https://infoscience.epfl.ch/record/257443/files/12-6555-2012-acp-12-6555-2012.pdf unknown http://infoscience.epfl.ch/record/257443 doi:10.5194/acp-12-6555-2012 https://infoscience.epfl.ch/record/257443/files/12-6555-2012-acp-12-6555-2012.pdf http://infoscience.epfl.ch/record/257443 Text 2018 ftinfoscience https://doi.org/10.5194/acp-12-6555-2012 2024-01-29T01:30:06Z A series of simulations with the Community Atmosphere Model version 5 (CAM5) with a 7-mode Modal Aerosol Model were conducted to assess the changes in cloud microphysical properties and radiative forcing resulting from marine organic aerosols. Model simulations show that the anthropogenic aerosol indirect forcing (AIF) predicted by CAM5 is decreased in absolute magnitude by up to 0.09 W mg -2 (7%) when marine organic aerosols are included. Changes in the AIF from marine organic aerosols are associated with small global increases in low-level in-cloud droplet number concentration and liquid water path of 1.3 cmg -3 (1.5%) and 0.22 g mg -2 (0.5%), respectively. Areas especially sensitive to changes in cloud properties due to marine organic aerosol include the Southern Ocean, North Pacific Ocean, and North Atlantic Ocean, all of which are characterized by high marine organic emission rates. As climate models are particularly sensitive to the background aerosol concentration, this small but non-negligible change in the AIF due to marine organic aerosols provides a notable link for ocean-ecosystem marine low-level cloud interactions and may be a candidate for consideration in future earth system models. © 2012 Author(s). Text North Atlantic Southern Ocean EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) Pacific Southern Ocean Atmospheric Chemistry and Physics 12 14 6555 6563 |
institution |
Open Polar |
collection |
EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) |
op_collection_id |
ftinfoscience |
language |
unknown |
description |
A series of simulations with the Community Atmosphere Model version 5 (CAM5) with a 7-mode Modal Aerosol Model were conducted to assess the changes in cloud microphysical properties and radiative forcing resulting from marine organic aerosols. Model simulations show that the anthropogenic aerosol indirect forcing (AIF) predicted by CAM5 is decreased in absolute magnitude by up to 0.09 W mg -2 (7%) when marine organic aerosols are included. Changes in the AIF from marine organic aerosols are associated with small global increases in low-level in-cloud droplet number concentration and liquid water path of 1.3 cmg -3 (1.5%) and 0.22 g mg -2 (0.5%), respectively. Areas especially sensitive to changes in cloud properties due to marine organic aerosol include the Southern Ocean, North Pacific Ocean, and North Atlantic Ocean, all of which are characterized by high marine organic emission rates. As climate models are particularly sensitive to the background aerosol concentration, this small but non-negligible change in the AIF due to marine organic aerosols provides a notable link for ocean-ecosystem marine low-level cloud interactions and may be a candidate for consideration in future earth system models. © 2012 Author(s). |
format |
Text |
author |
Gantt, B. Xu, J. Meskhidze, N. Zhang, Y. Nenes, Athanasios Ghan, S. J. Liu, X. Easter, R. Zaveri, R. |
spellingShingle |
Gantt, B. Xu, J. Meskhidze, N. Zhang, Y. Nenes, Athanasios Ghan, S. J. Liu, X. Easter, R. Zaveri, R. Global distribution and climate forcing of marine organic aerosol-Part 2: Effects on cloud properties and radiative forcing |
author_facet |
Gantt, B. Xu, J. Meskhidze, N. Zhang, Y. Nenes, Athanasios Ghan, S. J. Liu, X. Easter, R. Zaveri, R. |
author_sort |
Gantt, B. |
title |
Global distribution and climate forcing of marine organic aerosol-Part 2: Effects on cloud properties and radiative forcing |
title_short |
Global distribution and climate forcing of marine organic aerosol-Part 2: Effects on cloud properties and radiative forcing |
title_full |
Global distribution and climate forcing of marine organic aerosol-Part 2: Effects on cloud properties and radiative forcing |
title_fullStr |
Global distribution and climate forcing of marine organic aerosol-Part 2: Effects on cloud properties and radiative forcing |
title_full_unstemmed |
Global distribution and climate forcing of marine organic aerosol-Part 2: Effects on cloud properties and radiative forcing |
title_sort |
global distribution and climate forcing of marine organic aerosol-part 2: effects on cloud properties and radiative forcing |
publishDate |
2018 |
url |
http://infoscience.epfl.ch/record/257443 https://doi.org/10.5194/acp-12-6555-2012 https://infoscience.epfl.ch/record/257443/files/12-6555-2012-acp-12-6555-2012.pdf |
geographic |
Pacific Southern Ocean |
geographic_facet |
Pacific Southern Ocean |
genre |
North Atlantic Southern Ocean |
genre_facet |
North Atlantic Southern Ocean |
op_source |
http://infoscience.epfl.ch/record/257443 |
op_relation |
http://infoscience.epfl.ch/record/257443 doi:10.5194/acp-12-6555-2012 https://infoscience.epfl.ch/record/257443/files/12-6555-2012-acp-12-6555-2012.pdf |
op_doi |
https://doi.org/10.5194/acp-12-6555-2012 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
12 |
container_issue |
14 |
container_start_page |
6555 |
op_container_end_page |
6563 |
_version_ |
1792051512201969664 |