Properties of cloud condensation nuclei (CCN) in the trade wind marine boundary layer of the western North Atlantic
Cloud optical properties in the trade winds over the eastern Caribbean Sea have been shown to be sensitive to cloud condensation nuclei (CCN) concentrations. The objective of the current study was to investigate the CCN properties in the marine boundary layer (MBL) in the tropical western North Atla...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00043881 2023-05-15T17:31:23+02:00 Properties of cloud condensation nuclei (CCN) in the trade wind marine boundary layer of the western North Atlantic Kristensen, Thomas B. Müller, Thomas Kandler, Konrad Benker, Nathalie Hartmann, Markus Prospero, Joseph M. Wiedensohler, Alfred Stratmann, Frank 2016-03 electronic https://doi.org/10.5194/acp-16-2675-2016 https://noa.gwlb.de/receive/cop_mods_00043881 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00043501/acp-16-2675-2016.pdf https://acp.copernicus.org/articles/16/2675/2016/acp-16-2675-2016.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-16-2675-2016 https://noa.gwlb.de/receive/cop_mods_00043881 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00043501/acp-16-2675-2016.pdf https://acp.copernicus.org/articles/16/2675/2016/acp-16-2675-2016.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2016 ftnonlinearchiv https://doi.org/10.5194/acp-16-2675-2016 2022-02-08T22:40:22Z Cloud optical properties in the trade winds over the eastern Caribbean Sea have been shown to be sensitive to cloud condensation nuclei (CCN) concentrations. The objective of the current study was to investigate the CCN properties in the marine boundary layer (MBL) in the tropical western North Atlantic, in order to assess the respective roles of inorganic sulfate, organic species, long-range transported mineral dust and sea-salt particles. Measurements were carried out in June–July 2013, on the east coast of Barbados, and included CCN number concentrations, particle number size distributions and offline analysis of sampled particulate matter (PM) and sampled accumulation mode particles for an investigation of composition and mixing state with transmission electron microscopy (TEM) in combination with energy-dispersive X-ray spectroscopy (EDX). During most of the campaign, significant mass concentrations of long-range transported mineral dust was present in the PM, and influence from local island sources can be ruled out. The CCN and particle number concentrations were similar to what can be expected in pristine marine environments. The hygroscopicity parameter κ was inferred, and values in the range 0.2–0.5 were found during most of the campaign, with similar values for the Aitken and the accumulation mode. The accumulation mode particles studied with TEM were dominated by non-refractory material, and concentrations of mineral dust, sea salt and soot were too small to influence the CCN properties. It is highly likely that the CCN were dominated by a mixture of sulfate species and organic compounds. Article in Journal/Newspaper North Atlantic Niedersächsisches Online-Archiv NOA Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) Atmospheric Chemistry and Physics 16 4 2675 2688 |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Kristensen, Thomas B. Müller, Thomas Kandler, Konrad Benker, Nathalie Hartmann, Markus Prospero, Joseph M. Wiedensohler, Alfred Stratmann, Frank Properties of cloud condensation nuclei (CCN) in the trade wind marine boundary layer of the western North Atlantic |
topic_facet |
article Verlagsveröffentlichung |
description |
Cloud optical properties in the trade winds over the eastern Caribbean Sea have been shown to be sensitive to cloud condensation nuclei (CCN) concentrations. The objective of the current study was to investigate the CCN properties in the marine boundary layer (MBL) in the tropical western North Atlantic, in order to assess the respective roles of inorganic sulfate, organic species, long-range transported mineral dust and sea-salt particles. Measurements were carried out in June–July 2013, on the east coast of Barbados, and included CCN number concentrations, particle number size distributions and offline analysis of sampled particulate matter (PM) and sampled accumulation mode particles for an investigation of composition and mixing state with transmission electron microscopy (TEM) in combination with energy-dispersive X-ray spectroscopy (EDX). During most of the campaign, significant mass concentrations of long-range transported mineral dust was present in the PM, and influence from local island sources can be ruled out. The CCN and particle number concentrations were similar to what can be expected in pristine marine environments. The hygroscopicity parameter κ was inferred, and values in the range 0.2–0.5 were found during most of the campaign, with similar values for the Aitken and the accumulation mode. The accumulation mode particles studied with TEM were dominated by non-refractory material, and concentrations of mineral dust, sea salt and soot were too small to influence the CCN properties. It is highly likely that the CCN were dominated by a mixture of sulfate species and organic compounds. |
format |
Article in Journal/Newspaper |
author |
Kristensen, Thomas B. Müller, Thomas Kandler, Konrad Benker, Nathalie Hartmann, Markus Prospero, Joseph M. Wiedensohler, Alfred Stratmann, Frank |
author_facet |
Kristensen, Thomas B. Müller, Thomas Kandler, Konrad Benker, Nathalie Hartmann, Markus Prospero, Joseph M. Wiedensohler, Alfred Stratmann, Frank |
author_sort |
Kristensen, Thomas B. |
title |
Properties of cloud condensation nuclei (CCN) in the trade wind marine boundary layer of the western North Atlantic |
title_short |
Properties of cloud condensation nuclei (CCN) in the trade wind marine boundary layer of the western North Atlantic |
title_full |
Properties of cloud condensation nuclei (CCN) in the trade wind marine boundary layer of the western North Atlantic |
title_fullStr |
Properties of cloud condensation nuclei (CCN) in the trade wind marine boundary layer of the western North Atlantic |
title_full_unstemmed |
Properties of cloud condensation nuclei (CCN) in the trade wind marine boundary layer of the western North Atlantic |
title_sort |
properties of cloud condensation nuclei (ccn) in the trade wind marine boundary layer of the western north atlantic |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/acp-16-2675-2016 https://noa.gwlb.de/receive/cop_mods_00043881 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00043501/acp-16-2675-2016.pdf https://acp.copernicus.org/articles/16/2675/2016/acp-16-2675-2016.pdf |
long_lat |
ENVELOPE(-44.516,-44.516,-60.733,-60.733) |
geographic |
Aitken |
geographic_facet |
Aitken |
genre |
North Atlantic |
genre_facet |
North Atlantic |
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-16-2675-2016 https://noa.gwlb.de/receive/cop_mods_00043881 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00043501/acp-16-2675-2016.pdf https://acp.copernicus.org/articles/16/2675/2016/acp-16-2675-2016.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-16-2675-2016 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
16 |
container_issue |
4 |
container_start_page |
2675 |
op_container_end_page |
2688 |
_version_ |
1766128909577879552 |