Influence of Arctic Microlayers and Algal Cultures on Sea Spray Hygroscopicity and the Possible Implications for Mixed‐Phase Clouds
As Arctic sea ice cover diminishes, sea spray aerosols (SSA) have a larger potential to be emitted into the Arctic atmosphere. Emitted SSA can contain organic material, but how it affects the ability of particles to act as cloud condensation nuclei (CCN) is still not well understood. Here we measure...
Published in: | Journal of Geophysical Research: Atmospheres |
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Main Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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American Geophysical Union
2020
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Online Access: | https://publikationen.bibliothek.kit.edu/1000125504 https://publikationen.bibliothek.kit.edu/1000125504/133263745 https://doi.org/10.5445/IR/1000125504 |
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ftubkarlsruhe:oai:EVASTAR-Karlsruhe.de:1000125504 2023-05-15T14:43:17+02:00 Influence of Arctic Microlayers and Algal Cultures on Sea Spray Hygroscopicity and the Possible Implications for Mixed‐Phase Clouds Christiansen, Sigurd Ickes, Luisa Bulatovic, Ines Leck, Caroline Murray, Benjamin J. Bertram, Allan K. Wagner, Robert Gorokhova, Elena Salter, Matthew E. Ekman, Annica M. L. Bilde, Merete 2020-10-30 application/pdf https://publikationen.bibliothek.kit.edu/1000125504 https://publikationen.bibliothek.kit.edu/1000125504/133263745 https://doi.org/10.5445/IR/1000125504 eng eng American Geophysical Union info:eu-repo/semantics/altIdentifier/wos/000582482800009 info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JD032808 info:eu-repo/semantics/altIdentifier/issn/2169-897X info:eu-repo/semantics/altIdentifier/issn/2169-8996 https://publikationen.bibliothek.kit.edu/1000125504 https://publikationen.bibliothek.kit.edu/1000125504/133263745 https://doi.org/10.5445/IR/1000125504 https://creativecommons.org/licenses/by/4.0/deed.de info:eu-repo/semantics/openAccess CC-BY Journal of geophysical research / D, 125 (19), e2020JD032808 ISSN: 2169-897X, 2169-8996 ddc:550 Earth sciences info:eu-repo/classification/ddc/550 doc-type:article Text info:eu-repo/semantics/article article info:eu-repo/semantics/publishedVersion 2020 ftubkarlsruhe https://doi.org/10.5445/IR/1000125504 https://doi.org/10.1029/2020JD032808 2022-03-23T17:14:37Z As Arctic sea ice cover diminishes, sea spray aerosols (SSA) have a larger potential to be emitted into the Arctic atmosphere. Emitted SSA can contain organic material, but how it affects the ability of particles to act as cloud condensation nuclei (CCN) is still not well understood. Here we measure the CCN‐derived hygroscopicity of three different types of aerosol particles: (1) Sea salt aerosols made from artificial seawater, (2) aerosol generated from artificial seawater spiked with diatom species cultured in the laboratory, and (3) aerosols made from samples of sea surface microlayer (SML) collected during field campaigns in the North Atlantic and Arctic Ocean. Samples are aerosolized using a sea spray simulation tank (plunging jet) or an atomizer. We show that SSA containing diatom and microlayer exhibit similar CCN activity to inorganic sea salt with a κ value of ∼1.0. Large‐eddy simulation (LES) is then used to evaluate the general role of aerosol hygroscopicity in governing mixed‐phase low‐level cloud properties in the high Arctic. For accumulation mode aerosol, the simulated mixed‐phase cloud properties do not depend strongly on κ, unless the values are lower than 0.4. For Aitken mode aerosol, the hygroscopicity is more important; the particles can sustain the cloud if the hygroscopicity is equal to or higher than 0.4, but not otherwise. The experimental and model results combined suggest that the internal mixing of biogenic organic components in SSA does not have a substantial impact on the cloud droplet activation process and the cloud lifetime in Arctic mixed‐phase ... Article in Journal/Newspaper Arctic Arctic Ocean North Atlantic Sea ice KITopen (Karlsruhe Institute of Technologie) Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) Arctic Arctic Ocean Journal of Geophysical Research: Atmospheres 125 19 |
institution |
Open Polar |
collection |
KITopen (Karlsruhe Institute of Technologie) |
op_collection_id |
ftubkarlsruhe |
language |
English |
topic |
ddc:550 Earth sciences info:eu-repo/classification/ddc/550 |
spellingShingle |
ddc:550 Earth sciences info:eu-repo/classification/ddc/550 Christiansen, Sigurd Ickes, Luisa Bulatovic, Ines Leck, Caroline Murray, Benjamin J. Bertram, Allan K. Wagner, Robert Gorokhova, Elena Salter, Matthew E. Ekman, Annica M. L. Bilde, Merete Influence of Arctic Microlayers and Algal Cultures on Sea Spray Hygroscopicity and the Possible Implications for Mixed‐Phase Clouds |
topic_facet |
ddc:550 Earth sciences info:eu-repo/classification/ddc/550 |
description |
As Arctic sea ice cover diminishes, sea spray aerosols (SSA) have a larger potential to be emitted into the Arctic atmosphere. Emitted SSA can contain organic material, but how it affects the ability of particles to act as cloud condensation nuclei (CCN) is still not well understood. Here we measure the CCN‐derived hygroscopicity of three different types of aerosol particles: (1) Sea salt aerosols made from artificial seawater, (2) aerosol generated from artificial seawater spiked with diatom species cultured in the laboratory, and (3) aerosols made from samples of sea surface microlayer (SML) collected during field campaigns in the North Atlantic and Arctic Ocean. Samples are aerosolized using a sea spray simulation tank (plunging jet) or an atomizer. We show that SSA containing diatom and microlayer exhibit similar CCN activity to inorganic sea salt with a κ value of ∼1.0. Large‐eddy simulation (LES) is then used to evaluate the general role of aerosol hygroscopicity in governing mixed‐phase low‐level cloud properties in the high Arctic. For accumulation mode aerosol, the simulated mixed‐phase cloud properties do not depend strongly on κ, unless the values are lower than 0.4. For Aitken mode aerosol, the hygroscopicity is more important; the particles can sustain the cloud if the hygroscopicity is equal to or higher than 0.4, but not otherwise. The experimental and model results combined suggest that the internal mixing of biogenic organic components in SSA does not have a substantial impact on the cloud droplet activation process and the cloud lifetime in Arctic mixed‐phase ... |
format |
Article in Journal/Newspaper |
author |
Christiansen, Sigurd Ickes, Luisa Bulatovic, Ines Leck, Caroline Murray, Benjamin J. Bertram, Allan K. Wagner, Robert Gorokhova, Elena Salter, Matthew E. Ekman, Annica M. L. Bilde, Merete |
author_facet |
Christiansen, Sigurd Ickes, Luisa Bulatovic, Ines Leck, Caroline Murray, Benjamin J. Bertram, Allan K. Wagner, Robert Gorokhova, Elena Salter, Matthew E. Ekman, Annica M. L. Bilde, Merete |
author_sort |
Christiansen, Sigurd |
title |
Influence of Arctic Microlayers and Algal Cultures on Sea Spray Hygroscopicity and the Possible Implications for Mixed‐Phase Clouds |
title_short |
Influence of Arctic Microlayers and Algal Cultures on Sea Spray Hygroscopicity and the Possible Implications for Mixed‐Phase Clouds |
title_full |
Influence of Arctic Microlayers and Algal Cultures on Sea Spray Hygroscopicity and the Possible Implications for Mixed‐Phase Clouds |
title_fullStr |
Influence of Arctic Microlayers and Algal Cultures on Sea Spray Hygroscopicity and the Possible Implications for Mixed‐Phase Clouds |
title_full_unstemmed |
Influence of Arctic Microlayers and Algal Cultures on Sea Spray Hygroscopicity and the Possible Implications for Mixed‐Phase Clouds |
title_sort |
influence of arctic microlayers and algal cultures on sea spray hygroscopicity and the possible implications for mixed‐phase clouds |
publisher |
American Geophysical Union |
publishDate |
2020 |
url |
https://publikationen.bibliothek.kit.edu/1000125504 https://publikationen.bibliothek.kit.edu/1000125504/133263745 https://doi.org/10.5445/IR/1000125504 |
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 North Atlantic Sea ice |
genre_facet |
Arctic Arctic Ocean North Atlantic Sea ice |
op_source |
Journal of geophysical research / D, 125 (19), e2020JD032808 ISSN: 2169-897X, 2169-8996 |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000582482800009 info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JD032808 info:eu-repo/semantics/altIdentifier/issn/2169-897X info:eu-repo/semantics/altIdentifier/issn/2169-8996 https://publikationen.bibliothek.kit.edu/1000125504 https://publikationen.bibliothek.kit.edu/1000125504/133263745 https://doi.org/10.5445/IR/1000125504 |
op_rights |
https://creativecommons.org/licenses/by/4.0/deed.de info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5445/IR/1000125504 https://doi.org/10.1029/2020JD032808 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
125 |
container_issue |
19 |
_version_ |
1766314963639468032 |