Summertime primary and secondary contributions to Southern Ocean cloud condensation nuclei
Atmospheric aerosols in clean remote oceanic regions contribute significantly to the global albedo through the formation of haze and cloud layers; however, the relative importance of ‘primary’ wind-produced sea-spray over secondary (gas-to-particle conversion) sulphate in forming marine clouds remai...
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Nature Research (part of Springer Nature)
2020
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Online Access: | http://hdl.handle.net/10379/16038 https://doi.org/10.13025/15713 https://doi.org/10.1038/s41598-019-46788-3 |
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ftnuigalway:oai:https://researchrepository.universityofgalway.ie:10379/16038 2024-09-30T14:26:22+00:00 Summertime primary and secondary contributions to Southern Ocean cloud condensation nuclei Fossum, Kirsten N. Ovadnevaite, Jurgita Ceburnis, Darius Dall'Osto, Manuel Marullo, Salvatore Bellacicco, Marco Simó, Rafel Liu, Dantong Flynn, Michael Zuend, Andreas O'Dowd, Colin Seventh Framework Programme Spanish Ministry of Economy and Competitiveness (MINECO) Science Foundation Ireland 2020-06-18T12:27:21Z application/pdf http://hdl.handle.net/10379/16038 https://doi.org/10.13025/15713 https://doi.org/10.1038/s41598-019-46788-3 en eng Nature Research (part of Springer Nature) Scientific Reports Fossum, Kirsten N., Ovadnevaite, Jurgita, Ceburnis, Darius, Dall’Osto, Manuel, Marullo, Salvatore, Bellacicco, Marco, Simó, Rafel Liu, Dantong, Flynn, Michael, Zuend, Andreas, O’Dowd, Colin. (2019). Summertime Primary and Secondary Contributions to Southern Ocean Cloud Condensation Nuclei. Scientific Reports, 9(1), 10613. doi:10.1038/s41598-019-46788-3 2045-2322 http://hdl.handle.net/10379/16038 https://doi.org/10.13025/15713 doi:10.1038/s41598-019-46788-3 Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ Peak Supersaturation Aerosol Population Cloud Droplets Scanning Scanning Mobility Particle Sizer (SMPS) Aitken Mode Article 2020 ftnuigalway https://doi.org/10.13025/1571310.1038/s41598-019-46788-3 2024-09-17T14:44:30Z Atmospheric aerosols in clean remote oceanic regions contribute significantly to the global albedo through the formation of haze and cloud layers; however, the relative importance of ‘primary’ wind-produced sea-spray over secondary (gas-to-particle conversion) sulphate in forming marine clouds remains unclear. Here we report on marine aerosols (PM1) over the Southern Ocean around Antarctica, in terms of their physical, chemical, and cloud droplet activation properties. Two predominant pristine air masses and aerosol populations were encountered: modified continental Antarctic (cAA) comprising predominantly sulphate with minimal sea-salt contribution and maritime Polar (mP) comprising sulphate plus sea-salt. We estimate that in cAA air, 75% of the CCN are activated into cloud droplets while in mP air, 37% are activated into droplets, for corresponding peak supersaturation ranges of 0.37–0.45% and 0.19–0.31%, respectively. When realistic marine boundary layer cloud supersaturations are considered (e.g. ~0.2–0.3%), sea-salt CCN contributed 2–13% of the activated nuclei in the cAA air and 8–51% for the marine air for surface-level wind speed < 16 m s−1. At higher wind speeds, primary marine aerosol can even contribute up to 100% of the activated CCN, for corresponding peak supersaturations as high as 0.32%. The research leading to these results has received funding from the European Union’s Seventh Framework Programme (FP7/2007-2013) project BACCHUS under grant agreement n_ 603445; Spanish Ministry of Economy and Competitiveness (MINECO) as part of the PEGASO (Ref.: CTM2012-37615) and BIO-NUC (Ref: CGL2013-49020-R) projects; HEA-PRTLI4 and SFI under MaREI. EPA Ireland is acknowledged for research support at Mace Head. M.B. received funding through the Italian RITMARE fellowship and is now funded by the postdoc fellowship of the Centre National d'Études Spatiales (CNES, Paris, France). A.Z. acknowledges support by the Natural Sciences and Engineering Research Council of Canada (NSERC), through grant ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Southern Ocean National University of Ireland (NUI), Galway: ARAN Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) Antarctic Canada Mace ENVELOPE(155.883,155.883,-81.417,-81.417) Southern Ocean |
institution |
Open Polar |
collection |
National University of Ireland (NUI), Galway: ARAN |
op_collection_id |
ftnuigalway |
language |
English |
topic |
Peak Supersaturation Aerosol Population Cloud Droplets Scanning Scanning Mobility Particle Sizer (SMPS) Aitken Mode |
spellingShingle |
Peak Supersaturation Aerosol Population Cloud Droplets Scanning Scanning Mobility Particle Sizer (SMPS) Aitken Mode Fossum, Kirsten N. Ovadnevaite, Jurgita Ceburnis, Darius Dall'Osto, Manuel Marullo, Salvatore Bellacicco, Marco Simó, Rafel Liu, Dantong Flynn, Michael Zuend, Andreas O'Dowd, Colin Summertime primary and secondary contributions to Southern Ocean cloud condensation nuclei |
topic_facet |
Peak Supersaturation Aerosol Population Cloud Droplets Scanning Scanning Mobility Particle Sizer (SMPS) Aitken Mode |
description |
Atmospheric aerosols in clean remote oceanic regions contribute significantly to the global albedo through the formation of haze and cloud layers; however, the relative importance of ‘primary’ wind-produced sea-spray over secondary (gas-to-particle conversion) sulphate in forming marine clouds remains unclear. Here we report on marine aerosols (PM1) over the Southern Ocean around Antarctica, in terms of their physical, chemical, and cloud droplet activation properties. Two predominant pristine air masses and aerosol populations were encountered: modified continental Antarctic (cAA) comprising predominantly sulphate with minimal sea-salt contribution and maritime Polar (mP) comprising sulphate plus sea-salt. We estimate that in cAA air, 75% of the CCN are activated into cloud droplets while in mP air, 37% are activated into droplets, for corresponding peak supersaturation ranges of 0.37–0.45% and 0.19–0.31%, respectively. When realistic marine boundary layer cloud supersaturations are considered (e.g. ~0.2–0.3%), sea-salt CCN contributed 2–13% of the activated nuclei in the cAA air and 8–51% for the marine air for surface-level wind speed < 16 m s−1. At higher wind speeds, primary marine aerosol can even contribute up to 100% of the activated CCN, for corresponding peak supersaturations as high as 0.32%. The research leading to these results has received funding from the European Union’s Seventh Framework Programme (FP7/2007-2013) project BACCHUS under grant agreement n_ 603445; Spanish Ministry of Economy and Competitiveness (MINECO) as part of the PEGASO (Ref.: CTM2012-37615) and BIO-NUC (Ref: CGL2013-49020-R) projects; HEA-PRTLI4 and SFI under MaREI. EPA Ireland is acknowledged for research support at Mace Head. M.B. received funding through the Italian RITMARE fellowship and is now funded by the postdoc fellowship of the Centre National d'Études Spatiales (CNES, Paris, France). A.Z. acknowledges support by the Natural Sciences and Engineering Research Council of Canada (NSERC), through grant ... |
author2 |
Seventh Framework Programme Spanish Ministry of Economy and Competitiveness (MINECO) Science Foundation Ireland |
format |
Article in Journal/Newspaper |
author |
Fossum, Kirsten N. Ovadnevaite, Jurgita Ceburnis, Darius Dall'Osto, Manuel Marullo, Salvatore Bellacicco, Marco Simó, Rafel Liu, Dantong Flynn, Michael Zuend, Andreas O'Dowd, Colin |
author_facet |
Fossum, Kirsten N. Ovadnevaite, Jurgita Ceburnis, Darius Dall'Osto, Manuel Marullo, Salvatore Bellacicco, Marco Simó, Rafel Liu, Dantong Flynn, Michael Zuend, Andreas O'Dowd, Colin |
author_sort |
Fossum, Kirsten N. |
title |
Summertime primary and secondary contributions to Southern Ocean cloud condensation nuclei |
title_short |
Summertime primary and secondary contributions to Southern Ocean cloud condensation nuclei |
title_full |
Summertime primary and secondary contributions to Southern Ocean cloud condensation nuclei |
title_fullStr |
Summertime primary and secondary contributions to Southern Ocean cloud condensation nuclei |
title_full_unstemmed |
Summertime primary and secondary contributions to Southern Ocean cloud condensation nuclei |
title_sort |
summertime primary and secondary contributions to southern ocean cloud condensation nuclei |
publisher |
Nature Research (part of Springer Nature) |
publishDate |
2020 |
url |
http://hdl.handle.net/10379/16038 https://doi.org/10.13025/15713 https://doi.org/10.1038/s41598-019-46788-3 |
long_lat |
ENVELOPE(-44.516,-44.516,-60.733,-60.733) ENVELOPE(155.883,155.883,-81.417,-81.417) |
geographic |
Aitken Antarctic Canada Mace Southern Ocean |
geographic_facet |
Aitken Antarctic Canada Mace Southern Ocean |
genre |
Antarc* Antarctic Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean |
op_relation |
Scientific Reports Fossum, Kirsten N., Ovadnevaite, Jurgita, Ceburnis, Darius, Dall’Osto, Manuel, Marullo, Salvatore, Bellacicco, Marco, Simó, Rafel Liu, Dantong, Flynn, Michael, Zuend, Andreas, O’Dowd, Colin. (2019). Summertime Primary and Secondary Contributions to Southern Ocean Cloud Condensation Nuclei. Scientific Reports, 9(1), 10613. doi:10.1038/s41598-019-46788-3 2045-2322 http://hdl.handle.net/10379/16038 https://doi.org/10.13025/15713 doi:10.1038/s41598-019-46788-3 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ |
op_doi |
https://doi.org/10.13025/1571310.1038/s41598-019-46788-3 |
_version_ |
1811646735923019776 |