Cloud condensation nuclei as a modulator of ice processes in Arctic mixed-phase clouds
We propose that cloud condensation nuclei (CCN) concentrations are important for modulating ice formation of Arctic mixed-phase clouds, through modification of the droplet size distribution. Aircraft observations from the Aerosol, Radiation, and Cloud Processes affecting Arctic Climate (ARCPAC) stud...
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ftdoajarticles:oai:doaj.org/article:49e5638ef3894caf82ce69334900fb2e 2023-05-15T14:51:42+02:00 Cloud condensation nuclei as a modulator of ice processes in Arctic mixed-phase clouds S. Lance M. D. Shupe G. Feingold C. A. Brock J. Cozic J. S. Holloway R. H. Moore A. Nenes J. P. Schwarz J. R. Spackman K. D. Froyd D. M. Murphy J. Brioude O. R. Cooper A. Stohl J. F. Burkhart 2011-08-01T00:00:00Z https://doi.org/10.5194/acp-11-8003-2011 https://doaj.org/article/49e5638ef3894caf82ce69334900fb2e EN eng Copernicus Publications http://www.atmos-chem-phys.net/11/8003/2011/acp-11-8003-2011.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-11-8003-2011 1680-7316 1680-7324 https://doaj.org/article/49e5638ef3894caf82ce69334900fb2e Atmospheric Chemistry and Physics, Vol 11, Iss 15, Pp 8003-8015 (2011) Physics QC1-999 Chemistry QD1-999 article 2011 ftdoajarticles https://doi.org/10.5194/acp-11-8003-2011 2022-12-31T13:44:26Z We propose that cloud condensation nuclei (CCN) concentrations are important for modulating ice formation of Arctic mixed-phase clouds, through modification of the droplet size distribution. Aircraft observations from the Aerosol, Radiation, and Cloud Processes affecting Arctic Climate (ARCPAC) study in northern Alaska in April 2008 allow for identification and characterization of both aerosol and trace gas pollutants, which are then compared with cloud microphysical properties. Consistent with previous studies, we find that the concentration of precipitating ice particles (>400 μm) is correlated with the concentration of large droplets (>30 μm). We are further able to link the observed microphysical conditions to aerosol pollution, originating mainly from long range transport of biomass burning emissions. The case studies demonstrate that polluted mixed-phase clouds have narrower droplet size distributions and contain 1–2 orders of magnitude fewer precipitating ice particles than clean clouds at the same temperature. This suggests an aerosol indirect effect leading to greater cloud lifetime, greater cloud emissivity, and reduced precipitation. This result is opposite to the glaciation indirect effect, whereby polluted clouds are expected to precipitate more readily due to an increase in the concentration of particles acting as ice nuclei. Article in Journal/Newspaper Arctic Alaska Directory of Open Access Journals: DOAJ Articles Arctic Atmospheric Chemistry and Physics 11 15 8003 8015 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 S. Lance M. D. Shupe G. Feingold C. A. Brock J. Cozic J. S. Holloway R. H. Moore A. Nenes J. P. Schwarz J. R. Spackman K. D. Froyd D. M. Murphy J. Brioude O. R. Cooper A. Stohl J. F. Burkhart Cloud condensation nuclei as a modulator of ice processes in Arctic mixed-phase clouds |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
We propose that cloud condensation nuclei (CCN) concentrations are important for modulating ice formation of Arctic mixed-phase clouds, through modification of the droplet size distribution. Aircraft observations from the Aerosol, Radiation, and Cloud Processes affecting Arctic Climate (ARCPAC) study in northern Alaska in April 2008 allow for identification and characterization of both aerosol and trace gas pollutants, which are then compared with cloud microphysical properties. Consistent with previous studies, we find that the concentration of precipitating ice particles (>400 μm) is correlated with the concentration of large droplets (>30 μm). We are further able to link the observed microphysical conditions to aerosol pollution, originating mainly from long range transport of biomass burning emissions. The case studies demonstrate that polluted mixed-phase clouds have narrower droplet size distributions and contain 1–2 orders of magnitude fewer precipitating ice particles than clean clouds at the same temperature. This suggests an aerosol indirect effect leading to greater cloud lifetime, greater cloud emissivity, and reduced precipitation. This result is opposite to the glaciation indirect effect, whereby polluted clouds are expected to precipitate more readily due to an increase in the concentration of particles acting as ice nuclei. |
format |
Article in Journal/Newspaper |
author |
S. Lance M. D. Shupe G. Feingold C. A. Brock J. Cozic J. S. Holloway R. H. Moore A. Nenes J. P. Schwarz J. R. Spackman K. D. Froyd D. M. Murphy J. Brioude O. R. Cooper A. Stohl J. F. Burkhart |
author_facet |
S. Lance M. D. Shupe G. Feingold C. A. Brock J. Cozic J. S. Holloway R. H. Moore A. Nenes J. P. Schwarz J. R. Spackman K. D. Froyd D. M. Murphy J. Brioude O. R. Cooper A. Stohl J. F. Burkhart |
author_sort |
S. Lance |
title |
Cloud condensation nuclei as a modulator of ice processes in Arctic mixed-phase clouds |
title_short |
Cloud condensation nuclei as a modulator of ice processes in Arctic mixed-phase clouds |
title_full |
Cloud condensation nuclei as a modulator of ice processes in Arctic mixed-phase clouds |
title_fullStr |
Cloud condensation nuclei as a modulator of ice processes in Arctic mixed-phase clouds |
title_full_unstemmed |
Cloud condensation nuclei as a modulator of ice processes in Arctic mixed-phase clouds |
title_sort |
cloud condensation nuclei as a modulator of ice processes in arctic mixed-phase clouds |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://doi.org/10.5194/acp-11-8003-2011 https://doaj.org/article/49e5638ef3894caf82ce69334900fb2e |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Alaska |
genre_facet |
Arctic Alaska |
op_source |
Atmospheric Chemistry and Physics, Vol 11, Iss 15, Pp 8003-8015 (2011) |
op_relation |
http://www.atmos-chem-phys.net/11/8003/2011/acp-11-8003-2011.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-11-8003-2011 1680-7316 1680-7324 https://doaj.org/article/49e5638ef3894caf82ce69334900fb2e |
op_doi |
https://doi.org/10.5194/acp-11-8003-2011 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
11 |
container_issue |
15 |
container_start_page |
8003 |
op_container_end_page |
8015 |
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1766322819341221888 |