Low-Volatility Vapors and New Particle Formation Over the Southern Ocean During the Antarctic Circumnavigation Expedition
During summer, the Southern Ocean is largely unaffected by anthropogenic emissions, which makes this region an ideal place to investigate marine natural aerosol sources and processes. A better understanding of natural aerosol is key to constrain the preindustrial aerosol state and reduce the aerosol...
Published in: | Journal of Geophysical Research: Atmospheres |
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/337643 2024-01-07T09:39:57+01:00 Low-Volatility Vapors and New Particle Formation Over the Southern Ocean During the Antarctic Circumnavigation Expedition Baccarini, Andrea Dommen, Josef Lehtipalo, Katrianne Henning, Silvia Modini, Robin L. Gysel-Beer, Martin Baltensperger, Urs Schmale, Julia Institute for Atmospheric and Earth System Research (INAR) 2021-12-15T13:38:01Z 25 application/pdf http://hdl.handle.net/10138/337643 eng eng American Geophysical Union 10.1029/2021JD035126 The authors thank Christian Tatzelt for provid.ing the PM10 filter data, and Markus Hartmann and Andre Welti for operating instruments on leg 1 and 3, respectively. The authors are also grateful to Tuija Jokinen and Mikko Sipila for providing data from the Aboa station. The Antarctic Circumnavigation Expedition was funded by the Swiss Polar Institute and Ferring Pharmaceuticals. A. Baccarini was supported by the SNSF Grant No. 200021_169090. J. Schmale holds the Ingvar Kamprad Chair for Extreme Environments Research. Open access funding enabled and organized by Projekt DEAL. Baccarini , A , Dommen , J , Lehtipalo , K , Henning , S , Modini , R L , Gysel-Beer , M , Baltensperger , U & Schmale , J 2021 , ' Low-Volatility Vapors and New Particle Formation Over the Southern Ocean During the Antarctic Circumnavigation Expedition ' , Journal of Geophysical Research : Atmospheres , vol. 126 , no. 22 , e2021JD035126 . https://doi.org/10.1029/2021JD035126 ORCID: /0000-0002-1660-2706/work/104829276 85119881571 c767c273-b019-4157-b2c1-e727a7cc6c4a http://hdl.handle.net/10138/337643 000723100300024 cc_by_nc_nd openAccess info:eu-repo/semantics/openAccess 114 Physical sciences Article publishedVersion 2021 ftunivhelsihelda 2023-12-14T00:06:04Z During summer, the Southern Ocean is largely unaffected by anthropogenic emissions, which makes this region an ideal place to investigate marine natural aerosol sources and processes. A better understanding of natural aerosol is key to constrain the preindustrial aerosol state and reduce the aerosol radiative forcing uncertainty in global climate models. We report the concentrations of gaseous sulfuric acid, iodic acid, and methanesulfonic acid (MSA) together with a characterization of new particle formation (NPF) events over a large stretch of the Southern Ocean. Measurements were conducted on board the Russian icebreaker Akademik Tryoshnikov from January to March 2017. Iodic acid is characterized by a particular diurnal cycle with reduced concentration around noon, suggesting a lower formation yield when solar irradiance is higher. Gaseous MSA does not have a diurnal cycle and measured concentrations in gas and condensed phase are compatible with this species being primarily produced via heterogeneous oxidation of dimethyl sulfide and subsequent partitioning into the gas phase. We also found that NPF in the boundary layer is mainly driven by sulfuric acid but it occurred very rarely over the vast geographical area probed and did not contribute to the cloud condensation nuclei budget in a directly observable manner. Despite the near absence of NPF events in the boundary layer, Aitken mode particles were frequently measured, supporting the hypothesis of a free tropospheric source. Iodic acid and MSA were not found to participate in nucleation, however, MSA may contribute to aerosol growth via heterogeneous formation in the aqueous phase. Peer reviewed Article in Journal/Newspaper Antarc* Antarctic Southern Ocean HELDA – University of Helsinki Open Repository Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) Antarctic Southern Ocean The Antarctic Journal of Geophysical Research: Atmospheres 126 22 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
114 Physical sciences |
spellingShingle |
114 Physical sciences Baccarini, Andrea Dommen, Josef Lehtipalo, Katrianne Henning, Silvia Modini, Robin L. Gysel-Beer, Martin Baltensperger, Urs Schmale, Julia Low-Volatility Vapors and New Particle Formation Over the Southern Ocean During the Antarctic Circumnavigation Expedition |
topic_facet |
114 Physical sciences |
description |
During summer, the Southern Ocean is largely unaffected by anthropogenic emissions, which makes this region an ideal place to investigate marine natural aerosol sources and processes. A better understanding of natural aerosol is key to constrain the preindustrial aerosol state and reduce the aerosol radiative forcing uncertainty in global climate models. We report the concentrations of gaseous sulfuric acid, iodic acid, and methanesulfonic acid (MSA) together with a characterization of new particle formation (NPF) events over a large stretch of the Southern Ocean. Measurements were conducted on board the Russian icebreaker Akademik Tryoshnikov from January to March 2017. Iodic acid is characterized by a particular diurnal cycle with reduced concentration around noon, suggesting a lower formation yield when solar irradiance is higher. Gaseous MSA does not have a diurnal cycle and measured concentrations in gas and condensed phase are compatible with this species being primarily produced via heterogeneous oxidation of dimethyl sulfide and subsequent partitioning into the gas phase. We also found that NPF in the boundary layer is mainly driven by sulfuric acid but it occurred very rarely over the vast geographical area probed and did not contribute to the cloud condensation nuclei budget in a directly observable manner. Despite the near absence of NPF events in the boundary layer, Aitken mode particles were frequently measured, supporting the hypothesis of a free tropospheric source. Iodic acid and MSA were not found to participate in nucleation, however, MSA may contribute to aerosol growth via heterogeneous formation in the aqueous phase. Peer reviewed |
author2 |
Institute for Atmospheric and Earth System Research (INAR) |
format |
Article in Journal/Newspaper |
author |
Baccarini, Andrea Dommen, Josef Lehtipalo, Katrianne Henning, Silvia Modini, Robin L. Gysel-Beer, Martin Baltensperger, Urs Schmale, Julia |
author_facet |
Baccarini, Andrea Dommen, Josef Lehtipalo, Katrianne Henning, Silvia Modini, Robin L. Gysel-Beer, Martin Baltensperger, Urs Schmale, Julia |
author_sort |
Baccarini, Andrea |
title |
Low-Volatility Vapors and New Particle Formation Over the Southern Ocean During the Antarctic Circumnavigation Expedition |
title_short |
Low-Volatility Vapors and New Particle Formation Over the Southern Ocean During the Antarctic Circumnavigation Expedition |
title_full |
Low-Volatility Vapors and New Particle Formation Over the Southern Ocean During the Antarctic Circumnavigation Expedition |
title_fullStr |
Low-Volatility Vapors and New Particle Formation Over the Southern Ocean During the Antarctic Circumnavigation Expedition |
title_full_unstemmed |
Low-Volatility Vapors and New Particle Formation Over the Southern Ocean During the Antarctic Circumnavigation Expedition |
title_sort |
low-volatility vapors and new particle formation over the southern ocean during the antarctic circumnavigation expedition |
publisher |
American Geophysical Union |
publishDate |
2021 |
url |
http://hdl.handle.net/10138/337643 |
long_lat |
ENVELOPE(-44.516,-44.516,-60.733,-60.733) |
geographic |
Aitken Antarctic Southern Ocean The Antarctic |
geographic_facet |
Aitken Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
10.1029/2021JD035126 The authors thank Christian Tatzelt for provid.ing the PM10 filter data, and Markus Hartmann and Andre Welti for operating instruments on leg 1 and 3, respectively. The authors are also grateful to Tuija Jokinen and Mikko Sipila for providing data from the Aboa station. The Antarctic Circumnavigation Expedition was funded by the Swiss Polar Institute and Ferring Pharmaceuticals. A. Baccarini was supported by the SNSF Grant No. 200021_169090. J. Schmale holds the Ingvar Kamprad Chair for Extreme Environments Research. Open access funding enabled and organized by Projekt DEAL. Baccarini , A , Dommen , J , Lehtipalo , K , Henning , S , Modini , R L , Gysel-Beer , M , Baltensperger , U & Schmale , J 2021 , ' Low-Volatility Vapors and New Particle Formation Over the Southern Ocean During the Antarctic Circumnavigation Expedition ' , Journal of Geophysical Research : Atmospheres , vol. 126 , no. 22 , e2021JD035126 . https://doi.org/10.1029/2021JD035126 ORCID: /0000-0002-1660-2706/work/104829276 85119881571 c767c273-b019-4157-b2c1-e727a7cc6c4a http://hdl.handle.net/10138/337643 000723100300024 |
op_rights |
cc_by_nc_nd openAccess info:eu-repo/semantics/openAccess |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
126 |
container_issue |
22 |
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1787430260650803200 |