Physical and Chemical Properties of Cloud Droplet Residuals and Aerosol Particles During the Arctic Ocean 2018 Expedition
Detailed knowledge of the physical and chemical properties and sources of particles that form clouds is especially important in pristine areas like the Arctic, where particle concentrations are often low and observations are sparse. Here, we present in situ cloud and aerosol measurements from the ce...
Published in: | Journal of Geophysical Research: Atmospheres |
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Online Access: | https://doi.org/10.1029/2021JD036383 https://infoscience.epfl.ch/record/294384/files/JGR%20Atmospheres%20-%202022%20-%20Karlsson%20-%20Physical%20and%20Chemical%20Properties%20of%20Cloud%20Droplet%20Residuals%20and%20Aerosol%20Particles.pdf http://infoscience.epfl.ch/record/294384 |
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ftinfoscience:oai:infoscience.epfl.ch:294384 2023-05-15T14:49:19+02:00 Physical and Chemical Properties of Cloud Droplet Residuals and Aerosol Particles During the Arctic Ocean 2018 Expedition Karlsson, Linn Baccarini, Andrea Duplessis, Patrick Baumgardner, Darrel Brooks, Ian M. Chang, Rachel Y.‐W. Dada, Lubna Dällenbach, Kaspar R. Heikkinen, Liine Krejci, Radovan Leaitch, W. Richard Leck, Caroline Partridge, Daniel G. Salter, Matthew E. Wernli, Heini Wheeler, Michael J. Schmale, Julia Zieger, Paul 2022-06-02T19:34:31Z https://doi.org/10.1029/2021JD036383 https://infoscience.epfl.ch/record/294384/files/JGR%20Atmospheres%20-%202022%20-%20Karlsson%20-%20Physical%20and%20Chemical%20Properties%20of%20Cloud%20Droplet%20Residuals%20and%20Aerosol%20Particles.pdf http://infoscience.epfl.ch/record/294384 unknown doi:10.1029/2021JD036383 https://infoscience.epfl.ch/record/294384/files/JGR%20Atmospheres%20-%202022%20-%20Karlsson%20-%20Physical%20and%20Chemical%20Properties%20of%20Cloud%20Droplet%20Residuals%20and%20Aerosol%20Particles.pdf http://infoscience.epfl.ch/record/294384 http://infoscience.epfl.ch/record/294384 Text 2022 ftinfoscience https://doi.org/10.1029/2021JD036383 2023-02-13T23:10:13Z Detailed knowledge of the physical and chemical properties and sources of particles that form clouds is especially important in pristine areas like the Arctic, where particle concentrations are often low and observations are sparse. Here, we present in situ cloud and aerosol measurements from the central Arctic Ocean in August–September 2018 combined with air parcel source analysis. We provide direct experimental evidence that Aitken mode particles (particles with diameters ≲70 nm) significantly contribute to cloud condensation nuclei (CCN) or cloud droplet residuals, especially after the freeze-up of the sea ice in the transition toward fall. These Aitken mode particles were associated with air that spent more time over the pack ice, while size distributions dominated by accumulation mode particles (particles with diameters ≳70 nm) showed a stronger contribution of oceanic air and slightly different source regions. This was accompanied by changes in the average chemical composition of the accumulation mode aerosol with an increased relative contribution of organic material toward fall. Addition of aerosol mass due to aqueous-phase chemistry during in-cloud processing was probably small over the pack ice given the fact that we observed very similar particle size distributions in both the whole-air and cloud droplet residual data. These aerosol–cloud interaction observations provide valuable insight into the origin and physical and chemical properties of CCN over the pristine central Arctic Ocean. Text Arctic Arctic Ocean Sea ice EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) Arctic Arctic Ocean Journal of Geophysical Research: Atmospheres 127 11 |
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EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) |
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ftinfoscience |
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description |
Detailed knowledge of the physical and chemical properties and sources of particles that form clouds is especially important in pristine areas like the Arctic, where particle concentrations are often low and observations are sparse. Here, we present in situ cloud and aerosol measurements from the central Arctic Ocean in August–September 2018 combined with air parcel source analysis. We provide direct experimental evidence that Aitken mode particles (particles with diameters ≲70 nm) significantly contribute to cloud condensation nuclei (CCN) or cloud droplet residuals, especially after the freeze-up of the sea ice in the transition toward fall. These Aitken mode particles were associated with air that spent more time over the pack ice, while size distributions dominated by accumulation mode particles (particles with diameters ≳70 nm) showed a stronger contribution of oceanic air and slightly different source regions. This was accompanied by changes in the average chemical composition of the accumulation mode aerosol with an increased relative contribution of organic material toward fall. Addition of aerosol mass due to aqueous-phase chemistry during in-cloud processing was probably small over the pack ice given the fact that we observed very similar particle size distributions in both the whole-air and cloud droplet residual data. These aerosol–cloud interaction observations provide valuable insight into the origin and physical and chemical properties of CCN over the pristine central Arctic Ocean. |
format |
Text |
author |
Karlsson, Linn Baccarini, Andrea Duplessis, Patrick Baumgardner, Darrel Brooks, Ian M. Chang, Rachel Y.‐W. Dada, Lubna Dällenbach, Kaspar R. Heikkinen, Liine Krejci, Radovan Leaitch, W. Richard Leck, Caroline Partridge, Daniel G. Salter, Matthew E. Wernli, Heini Wheeler, Michael J. Schmale, Julia Zieger, Paul |
spellingShingle |
Karlsson, Linn Baccarini, Andrea Duplessis, Patrick Baumgardner, Darrel Brooks, Ian M. Chang, Rachel Y.‐W. Dada, Lubna Dällenbach, Kaspar R. Heikkinen, Liine Krejci, Radovan Leaitch, W. Richard Leck, Caroline Partridge, Daniel G. Salter, Matthew E. Wernli, Heini Wheeler, Michael J. Schmale, Julia Zieger, Paul Physical and Chemical Properties of Cloud Droplet Residuals and Aerosol Particles During the Arctic Ocean 2018 Expedition |
author_facet |
Karlsson, Linn Baccarini, Andrea Duplessis, Patrick Baumgardner, Darrel Brooks, Ian M. Chang, Rachel Y.‐W. Dada, Lubna Dällenbach, Kaspar R. Heikkinen, Liine Krejci, Radovan Leaitch, W. Richard Leck, Caroline Partridge, Daniel G. Salter, Matthew E. Wernli, Heini Wheeler, Michael J. Schmale, Julia Zieger, Paul |
author_sort |
Karlsson, Linn |
title |
Physical and Chemical Properties of Cloud Droplet Residuals and Aerosol Particles During the Arctic Ocean 2018 Expedition |
title_short |
Physical and Chemical Properties of Cloud Droplet Residuals and Aerosol Particles During the Arctic Ocean 2018 Expedition |
title_full |
Physical and Chemical Properties of Cloud Droplet Residuals and Aerosol Particles During the Arctic Ocean 2018 Expedition |
title_fullStr |
Physical and Chemical Properties of Cloud Droplet Residuals and Aerosol Particles During the Arctic Ocean 2018 Expedition |
title_full_unstemmed |
Physical and Chemical Properties of Cloud Droplet Residuals and Aerosol Particles During the Arctic Ocean 2018 Expedition |
title_sort |
physical and chemical properties of cloud droplet residuals and aerosol particles during the arctic ocean 2018 expedition |
publishDate |
2022 |
url |
https://doi.org/10.1029/2021JD036383 https://infoscience.epfl.ch/record/294384/files/JGR%20Atmospheres%20-%202022%20-%20Karlsson%20-%20Physical%20and%20Chemical%20Properties%20of%20Cloud%20Droplet%20Residuals%20and%20Aerosol%20Particles.pdf http://infoscience.epfl.ch/record/294384 |
long_lat |
ENVELOPE(-44.516,-44.516,-60.733,-60.733) |
geographic |
Aitken Arctic Arctic Ocean |
geographic_facet |
Aitken Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Ocean Sea ice |
op_source |
http://infoscience.epfl.ch/record/294384 |
op_relation |
doi:10.1029/2021JD036383 https://infoscience.epfl.ch/record/294384/files/JGR%20Atmospheres%20-%202022%20-%20Karlsson%20-%20Physical%20and%20Chemical%20Properties%20of%20Cloud%20Droplet%20Residuals%20and%20Aerosol%20Particles.pdf http://infoscience.epfl.ch/record/294384 |
op_doi |
https://doi.org/10.1029/2021JD036383 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
127 |
container_issue |
11 |
_version_ |
1766320380039921664 |