Factors controlling atmospheric DMS and its oxidation products (MSA and nssSO₄²⁻) in the aerosol at Terra Nova Bay, Antarctica
This paper presents the results of simultaneous high time-resolution measurements of biogenic aerosol (methane sulfonic acid (MSA), non-sea salt sulfate nssSO₄²⁻) with its gaseous precursor dimethylsulfide (DMS), performed at the Italian coastal base Mario Zucchelli Station (MZS) in Terra Nova Bay (...
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Online Access: | http://hdl.handle.net/2067/48369 https://doi.org/10.5194/acp-22-9245-2022 https://acp.copernicus.org/articles/22/9245/2022/ |
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ftunivtuscia:oai:dspace.unitus.it:2067/48369 2023-05-15T13:43:45+02:00 Factors controlling atmospheric DMS and its oxidation products (MSA and nssSO₄²⁻) in the aerosol at Terra Nova Bay, Antarctica Becagli, Silvia Barbaro, Elena Bonamano, Simone Caiazzo, Laura Di Sarra, Alcide Feltracco, Matteo Grigioni, Paolo Heintzenberg, Jost Lazzara, Luigi Legrand, Michel Madonia, Alice Marcelli, Marco Melillo, Chiara Meloni, Daniela Nuccio, Caterina Pace, Giandomenico Park, Ki Tae Preunkert, Suzanne Severi, Mirko Vecchiato, Marco Zangrando, Roberta Traversi, Rita ITA 2022 ELETTRONICO http://hdl.handle.net/2067/48369 https://doi.org/10.5194/acp-22-9245-2022 https://acp.copernicus.org/articles/22/9245/2022/ en eng ATMOSPHERIC CHEMISTRY AND PHYSICS 9245 9263 19 22 14 1680-7324 http://hdl.handle.net/2067/48369 doi:10.5194/acp-22-9245-2022 2-s2.0-85134564040 https://acp.copernicus.org/articles/22/9245/2022/ restricted article 2022 ftunivtuscia https://doi.org/10.5194/acp-22-9245-2022 2022-09-20T22:11:36Z This paper presents the results of simultaneous high time-resolution measurements of biogenic aerosol (methane sulfonic acid (MSA), non-sea salt sulfate nssSO₄²⁻) with its gaseous precursor dimethylsulfide (DMS), performed at the Italian coastal base Mario Zucchelli Station (MZS) in Terra Nova Bay (MZS) during two summer campaigns (2018-2019 and 2019-2020). Data on atmospheric DMS concentration are scarce, especially in Antarctica. The DMS maximum at MZS occurs in December, one month earlier than at other Antarctic stations. The maximum of DMS concentration is connected with the phytoplanktonic senescent phase following the bloom of Phaeocystis antarctica that occurs in the polynya when sea ice opens up. The second plankton bloom occurs in January and, despite the high dimethylsufoniopropionate (DMSP) concentration in seawater, atmospheric DMS remains low, probably due to its fast biological turnover in seawater in this period. The intensity and timing of the DMS evolution during the two years suggest that only the portion of the polynya close to the sampling site produces a discernible effect on the measured DMS. The closeness to the DMS source area and the occurrence of air masses containing DMS and freshly formed oxidation products allow us to study the kinetic of biogenic aerosol formation and the reliable derivation of the branch ratio between MSA and nssSO₄²⁻ from DMS oxidation that is estimated to be 0.84±0.06. Conversely, for aged air masses with low DMS content, an enrichment of nssSO₄²⁻ with respect to MSA, is observed. We estimate that the mean contribution of freshly formed biogenic aerosol to PM10 is 17% with a maximum of 56%. The high contribution of biogenic aerosol to the total PM10 mass in summer in this area highlights the dominant role of the polynya on biogenic aerosol formation. Finally, due to the regional and year-to-year variability of DMS and related biogenic aerosol formation, we stress the need for long-term measurements of seawater and atmospheric DMS and biogenic aerosol along the ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice Università degli studi della Tuscia: Unitus DSpace Antarctic Terra Nova Bay Mario Zucchelli ENVELOPE(164.123,164.123,-74.695,-74.695) Mario Zucchelli Station ENVELOPE(164.117,164.117,-74.700,-74.700) Atmospheric Chemistry and Physics 22 14 9245 9263 |
institution |
Open Polar |
collection |
Università degli studi della Tuscia: Unitus DSpace |
op_collection_id |
ftunivtuscia |
language |
English |
description |
This paper presents the results of simultaneous high time-resolution measurements of biogenic aerosol (methane sulfonic acid (MSA), non-sea salt sulfate nssSO₄²⁻) with its gaseous precursor dimethylsulfide (DMS), performed at the Italian coastal base Mario Zucchelli Station (MZS) in Terra Nova Bay (MZS) during two summer campaigns (2018-2019 and 2019-2020). Data on atmospheric DMS concentration are scarce, especially in Antarctica. The DMS maximum at MZS occurs in December, one month earlier than at other Antarctic stations. The maximum of DMS concentration is connected with the phytoplanktonic senescent phase following the bloom of Phaeocystis antarctica that occurs in the polynya when sea ice opens up. The second plankton bloom occurs in January and, despite the high dimethylsufoniopropionate (DMSP) concentration in seawater, atmospheric DMS remains low, probably due to its fast biological turnover in seawater in this period. The intensity and timing of the DMS evolution during the two years suggest that only the portion of the polynya close to the sampling site produces a discernible effect on the measured DMS. The closeness to the DMS source area and the occurrence of air masses containing DMS and freshly formed oxidation products allow us to study the kinetic of biogenic aerosol formation and the reliable derivation of the branch ratio between MSA and nssSO₄²⁻ from DMS oxidation that is estimated to be 0.84±0.06. Conversely, for aged air masses with low DMS content, an enrichment of nssSO₄²⁻ with respect to MSA, is observed. We estimate that the mean contribution of freshly formed biogenic aerosol to PM10 is 17% with a maximum of 56%. The high contribution of biogenic aerosol to the total PM10 mass in summer in this area highlights the dominant role of the polynya on biogenic aerosol formation. Finally, due to the regional and year-to-year variability of DMS and related biogenic aerosol formation, we stress the need for long-term measurements of seawater and atmospheric DMS and biogenic aerosol along the ... |
author2 |
ITA |
format |
Article in Journal/Newspaper |
author |
Becagli, Silvia Barbaro, Elena Bonamano, Simone Caiazzo, Laura Di Sarra, Alcide Feltracco, Matteo Grigioni, Paolo Heintzenberg, Jost Lazzara, Luigi Legrand, Michel Madonia, Alice Marcelli, Marco Melillo, Chiara Meloni, Daniela Nuccio, Caterina Pace, Giandomenico Park, Ki Tae Preunkert, Suzanne Severi, Mirko Vecchiato, Marco Zangrando, Roberta Traversi, Rita |
spellingShingle |
Becagli, Silvia Barbaro, Elena Bonamano, Simone Caiazzo, Laura Di Sarra, Alcide Feltracco, Matteo Grigioni, Paolo Heintzenberg, Jost Lazzara, Luigi Legrand, Michel Madonia, Alice Marcelli, Marco Melillo, Chiara Meloni, Daniela Nuccio, Caterina Pace, Giandomenico Park, Ki Tae Preunkert, Suzanne Severi, Mirko Vecchiato, Marco Zangrando, Roberta Traversi, Rita Factors controlling atmospheric DMS and its oxidation products (MSA and nssSO₄²⁻) in the aerosol at Terra Nova Bay, Antarctica |
author_facet |
Becagli, Silvia Barbaro, Elena Bonamano, Simone Caiazzo, Laura Di Sarra, Alcide Feltracco, Matteo Grigioni, Paolo Heintzenberg, Jost Lazzara, Luigi Legrand, Michel Madonia, Alice Marcelli, Marco Melillo, Chiara Meloni, Daniela Nuccio, Caterina Pace, Giandomenico Park, Ki Tae Preunkert, Suzanne Severi, Mirko Vecchiato, Marco Zangrando, Roberta Traversi, Rita |
author_sort |
Becagli, Silvia |
title |
Factors controlling atmospheric DMS and its oxidation products (MSA and nssSO₄²⁻) in the aerosol at Terra Nova Bay, Antarctica |
title_short |
Factors controlling atmospheric DMS and its oxidation products (MSA and nssSO₄²⁻) in the aerosol at Terra Nova Bay, Antarctica |
title_full |
Factors controlling atmospheric DMS and its oxidation products (MSA and nssSO₄²⁻) in the aerosol at Terra Nova Bay, Antarctica |
title_fullStr |
Factors controlling atmospheric DMS and its oxidation products (MSA and nssSO₄²⁻) in the aerosol at Terra Nova Bay, Antarctica |
title_full_unstemmed |
Factors controlling atmospheric DMS and its oxidation products (MSA and nssSO₄²⁻) in the aerosol at Terra Nova Bay, Antarctica |
title_sort |
factors controlling atmospheric dms and its oxidation products (msa and nssso₄²⁻) in the aerosol at terra nova bay, antarctica |
publishDate |
2022 |
url |
http://hdl.handle.net/2067/48369 https://doi.org/10.5194/acp-22-9245-2022 https://acp.copernicus.org/articles/22/9245/2022/ |
long_lat |
ENVELOPE(164.123,164.123,-74.695,-74.695) ENVELOPE(164.117,164.117,-74.700,-74.700) |
geographic |
Antarctic Terra Nova Bay Mario Zucchelli Mario Zucchelli Station |
geographic_facet |
Antarctic Terra Nova Bay Mario Zucchelli Mario Zucchelli Station |
genre |
Antarc* Antarctic Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Sea ice |
op_relation |
ATMOSPHERIC CHEMISTRY AND PHYSICS 9245 9263 19 22 14 1680-7324 http://hdl.handle.net/2067/48369 doi:10.5194/acp-22-9245-2022 2-s2.0-85134564040 https://acp.copernicus.org/articles/22/9245/2022/ |
op_rights |
restricted |
op_doi |
https://doi.org/10.5194/acp-22-9245-2022 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
22 |
container_issue |
14 |
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9245 |
op_container_end_page |
9263 |
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1766192703514607616 |