Effects of 20–100 nm particles on liquid clouds in the clean summertime Arctic
Observations addressing effects of aerosol particles on summertime Arctic clouds are limited. An airborne study, carried out during July 2014 from Resolute Bay, Nunavut, Canada, as part of the Canadian NETCARE project, provides a comprehensive in situ look into some effects of aerosol particles on l...
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2016
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00043363 2023-05-15T13:11:33+02:00 Effects of 20–100 nm particles on liquid clouds in the clean summertime Arctic Leaitch, W. Richard Korolev, Alexei Aliabadi, Amir A. Burkart, Julia Willis, Megan D. Abbatt, Jonathan P. D. Bozem, Heiko Hoor, Peter Köllner, Franziska Schneider, Johannes Herber, Andreas Konrad, Christian Brauner, Ralf 2016-09 electronic https://doi.org/10.5194/acp-16-11107-2016 https://noa.gwlb.de/receive/cop_mods_00043363 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00042983/acp-16-11107-2016.pdf https://acp.copernicus.org/articles/16/11107/2016/acp-16-11107-2016.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-16-11107-2016 https://noa.gwlb.de/receive/cop_mods_00043363 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00042983/acp-16-11107-2016.pdf https://acp.copernicus.org/articles/16/11107/2016/acp-16-11107-2016.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2016 ftnonlinearchiv https://doi.org/10.5194/acp-16-11107-2016 2022-02-08T22:40:36Z Observations addressing effects of aerosol particles on summertime Arctic clouds are limited. An airborne study, carried out during July 2014 from Resolute Bay, Nunavut, Canada, as part of the Canadian NETCARE project, provides a comprehensive in situ look into some effects of aerosol particles on liquid clouds in the clean environment of the Arctic summer. Median cloud droplet number concentrations (CDNC) from 62 cloud samples are 10 cm−3 for low-altitude cloud (clouds topped below 200 m) and 101 cm−3 for higher-altitude cloud (clouds based above 200 m). The lower activation size of aerosol particles is ≤ 50 nm diameter in about 40 % of the cases. Particles as small as 20 nm activated in the higher-altitude clouds consistent with higher supersaturations (S) for those clouds inferred from comparison of the CDNC with cloud condensation nucleus (CCN) measurements. Over 60 % of the low-altitude cloud samples fall into the CCN-limited regime of Mauritsen et al. (2011), within which increases in CDNC may increase liquid water and warm the surface. These first observations of that CCN-limited regime indicate a positive association of the liquid water content (LWC) and CDNC, but no association of either the CDNC or LWC with aerosol variations. Above the Mauritsen limit, where aerosol indirect cooling may result, changes in particles with diameters from 20 to 100 nm exert a relatively strong influence on the CDNC. Within this exceedingly clean environment, as defined by low carbon monoxide and low concentrations of larger particles, the background CDNC are estimated to range between 16 and 160 cm−3, where higher values are due to activation of particles ≤ 50 nm that likely derive from natural sources. These observations offer the first wide-ranging reference for the aerosol cloud albedo effect in the summertime Arctic. Article in Journal/Newspaper albedo Arctic Nunavut Resolute Bay Niedersächsisches Online-Archiv NOA Arctic Canada Nunavut Resolute Bay ENVELOPE(-94.842,-94.842,74.677,74.677) Atmospheric Chemistry and Physics 16 17 11107 11124 |
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Niedersächsisches Online-Archiv NOA |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Leaitch, W. Richard Korolev, Alexei Aliabadi, Amir A. Burkart, Julia Willis, Megan D. Abbatt, Jonathan P. D. Bozem, Heiko Hoor, Peter Köllner, Franziska Schneider, Johannes Herber, Andreas Konrad, Christian Brauner, Ralf Effects of 20–100 nm particles on liquid clouds in the clean summertime Arctic |
topic_facet |
article Verlagsveröffentlichung |
description |
Observations addressing effects of aerosol particles on summertime Arctic clouds are limited. An airborne study, carried out during July 2014 from Resolute Bay, Nunavut, Canada, as part of the Canadian NETCARE project, provides a comprehensive in situ look into some effects of aerosol particles on liquid clouds in the clean environment of the Arctic summer. Median cloud droplet number concentrations (CDNC) from 62 cloud samples are 10 cm−3 for low-altitude cloud (clouds topped below 200 m) and 101 cm−3 for higher-altitude cloud (clouds based above 200 m). The lower activation size of aerosol particles is ≤ 50 nm diameter in about 40 % of the cases. Particles as small as 20 nm activated in the higher-altitude clouds consistent with higher supersaturations (S) for those clouds inferred from comparison of the CDNC with cloud condensation nucleus (CCN) measurements. Over 60 % of the low-altitude cloud samples fall into the CCN-limited regime of Mauritsen et al. (2011), within which increases in CDNC may increase liquid water and warm the surface. These first observations of that CCN-limited regime indicate a positive association of the liquid water content (LWC) and CDNC, but no association of either the CDNC or LWC with aerosol variations. Above the Mauritsen limit, where aerosol indirect cooling may result, changes in particles with diameters from 20 to 100 nm exert a relatively strong influence on the CDNC. Within this exceedingly clean environment, as defined by low carbon monoxide and low concentrations of larger particles, the background CDNC are estimated to range between 16 and 160 cm−3, where higher values are due to activation of particles ≤ 50 nm that likely derive from natural sources. These observations offer the first wide-ranging reference for the aerosol cloud albedo effect in the summertime Arctic. |
format |
Article in Journal/Newspaper |
author |
Leaitch, W. Richard Korolev, Alexei Aliabadi, Amir A. Burkart, Julia Willis, Megan D. Abbatt, Jonathan P. D. Bozem, Heiko Hoor, Peter Köllner, Franziska Schneider, Johannes Herber, Andreas Konrad, Christian Brauner, Ralf |
author_facet |
Leaitch, W. Richard Korolev, Alexei Aliabadi, Amir A. Burkart, Julia Willis, Megan D. Abbatt, Jonathan P. D. Bozem, Heiko Hoor, Peter Köllner, Franziska Schneider, Johannes Herber, Andreas Konrad, Christian Brauner, Ralf |
author_sort |
Leaitch, W. Richard |
title |
Effects of 20–100 nm particles on liquid clouds in the clean summertime Arctic |
title_short |
Effects of 20–100 nm particles on liquid clouds in the clean summertime Arctic |
title_full |
Effects of 20–100 nm particles on liquid clouds in the clean summertime Arctic |
title_fullStr |
Effects of 20–100 nm particles on liquid clouds in the clean summertime Arctic |
title_full_unstemmed |
Effects of 20–100 nm particles on liquid clouds in the clean summertime Arctic |
title_sort |
effects of 20–100 nm particles on liquid clouds in the clean summertime arctic |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/acp-16-11107-2016 https://noa.gwlb.de/receive/cop_mods_00043363 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00042983/acp-16-11107-2016.pdf https://acp.copernicus.org/articles/16/11107/2016/acp-16-11107-2016.pdf |
long_lat |
ENVELOPE(-94.842,-94.842,74.677,74.677) |
geographic |
Arctic Canada Nunavut Resolute Bay |
geographic_facet |
Arctic Canada Nunavut Resolute Bay |
genre |
albedo Arctic Nunavut Resolute Bay |
genre_facet |
albedo Arctic Nunavut Resolute Bay |
op_relation |
Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-16-11107-2016 https://noa.gwlb.de/receive/cop_mods_00043363 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00042983/acp-16-11107-2016.pdf https://acp.copernicus.org/articles/16/11107/2016/acp-16-11107-2016.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-16-11107-2016 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
16 |
container_issue |
17 |
container_start_page |
11107 |
op_container_end_page |
11124 |
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1766247896592678912 |