Sources of Dimethyl Sulfide in the Canadian Arctic Archipelago and Baffin Bay
International audience Dimethyl sulfide plays a major role in the global sulfur cycle, meaning that it is important to the formation of sulfate aerosol and thus to cloud condensation nuclei populations and cloud formation. The summertime Arctic atmosphere sometimes resides in a cloud condensation nu...
Main Authors: | , , , , , , , , , |
---|---|
Other Authors: | , , , , , , , , , |
Format: | Conference Object |
Language: | English |
Published: |
HAL CCSD
2015
|
Subjects: | |
Online Access: | https://hal-insu.archives-ouvertes.fr/insu-01247383 |
id |
ftinsu:oai:HAL:insu-01247383v1 |
---|---|
record_format |
openpolar |
spelling |
ftinsu:oai:HAL:insu-01247383v1 2023-06-18T03:38:40+02:00 Sources of Dimethyl Sulfide in the Canadian Arctic Archipelago and Baffin Bay Mungall, Emma Croft, Betty Lizotte, Martine Thomas, Jennie L. Murphy, Jennifer G. Levasseur, Maurice Martin, Randall Wentzell, Jeremy Liggio, John Abbatt, Jonathan P. D. University of Toronto Department of Physics and Atmospheric Science Halifax Dalhousie University Halifax Université Laval Québec (ULaval) TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Department of Chemistry University of Toronto Department of Biology Québec Environment and Climate Change Canada San Francisco, United States 2015-12-14 https://hal-insu.archives-ouvertes.fr/insu-01247383 en eng HAL CCSD insu-01247383 https://hal-insu.archives-ouvertes.fr/insu-01247383 AGU Fall Meeting 2015 https://hal-insu.archives-ouvertes.fr/insu-01247383 AGU Fall Meeting 2015, Dec 2015, San Francisco, United States. pp.A231-03 [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/conferenceObject Conference papers 2015 ftinsu 2023-06-06T01:12:10Z International audience Dimethyl sulfide plays a major role in the global sulfur cycle, meaning that it is important to the formation of sulfate aerosol and thus to cloud condensation nuclei populations and cloud formation. The summertime Arctic atmosphere sometimes resides in a cloud condensation nuclei limited regime, making it very susceptible to changes in their number. Despite the interest generated by this situation, dimethyl sulfide has only rarely been measured in the summertime Arctic. This work presents the first high time resolution (10 Hz) DMS mixing ratio measurements for the Eastern Canadian Archipelago and Baffin Bay in summer performed on an icebreaker cruise as one component of the Network on Climate and Aerosols: Addressing Key Uncertainties in Remote Canadian Environments (NETCARE). Measured mixing ratios ranged from below the detection limit of 4 pptv to 1155 pptv with a median value of 186 pptv. We used transfer velocity parameterizations from the literature to generate the first flux estimates for this region in summer, which ranged from 0.02-12 μmol m-2 d-1. DMS has a lifetime against OH oxidation of 1-2 days, allowing both local sources and transport to play roles in its atmospheric mixing ratio. Through air mass trajectory analysis using FLEXPART-WRF and chemical transport modeling using GEOS-Chem, we have identified the relative contributions of local sources (Lancaster Sound and Baffin Bay) as well as transport from further afield (the Hudson Bay System and the Beaufort Sea) and find that the local sources dominate. GEOS-Chem is able to reproduce the major features of the measured time series, but is biased low overall (median 72 pptv). We discuss non-marine sources that could account for this low bias and estimate the possible contributions to DMS mixing ratios from lakes, biomass burning, melt ponds and coastal tundra. Our results show that local marine sources of DMS dominate the summer Arctic atmosphere, but that non-local and possibly non-marine contributions have a detectable ... Conference Object Arctic Archipelago Arctic Baffin Bay Baffin Bay Baffin Beaufort Sea Canadian Archipelago Canadian Arctic Archipelago Hudson Bay Lancaster Sound Tundra Institut national des sciences de l'Univers: HAL-INSU Arctic Baffin Bay Canadian Arctic Archipelago Hudson Hudson Bay Lancaster Sound ENVELOPE(-83.999,-83.999,74.218,74.218) |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
spellingShingle |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] Mungall, Emma Croft, Betty Lizotte, Martine Thomas, Jennie L. Murphy, Jennifer G. Levasseur, Maurice Martin, Randall Wentzell, Jeremy Liggio, John Abbatt, Jonathan P. D. Sources of Dimethyl Sulfide in the Canadian Arctic Archipelago and Baffin Bay |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
International audience Dimethyl sulfide plays a major role in the global sulfur cycle, meaning that it is important to the formation of sulfate aerosol and thus to cloud condensation nuclei populations and cloud formation. The summertime Arctic atmosphere sometimes resides in a cloud condensation nuclei limited regime, making it very susceptible to changes in their number. Despite the interest generated by this situation, dimethyl sulfide has only rarely been measured in the summertime Arctic. This work presents the first high time resolution (10 Hz) DMS mixing ratio measurements for the Eastern Canadian Archipelago and Baffin Bay in summer performed on an icebreaker cruise as one component of the Network on Climate and Aerosols: Addressing Key Uncertainties in Remote Canadian Environments (NETCARE). Measured mixing ratios ranged from below the detection limit of 4 pptv to 1155 pptv with a median value of 186 pptv. We used transfer velocity parameterizations from the literature to generate the first flux estimates for this region in summer, which ranged from 0.02-12 μmol m-2 d-1. DMS has a lifetime against OH oxidation of 1-2 days, allowing both local sources and transport to play roles in its atmospheric mixing ratio. Through air mass trajectory analysis using FLEXPART-WRF and chemical transport modeling using GEOS-Chem, we have identified the relative contributions of local sources (Lancaster Sound and Baffin Bay) as well as transport from further afield (the Hudson Bay System and the Beaufort Sea) and find that the local sources dominate. GEOS-Chem is able to reproduce the major features of the measured time series, but is biased low overall (median 72 pptv). We discuss non-marine sources that could account for this low bias and estimate the possible contributions to DMS mixing ratios from lakes, biomass burning, melt ponds and coastal tundra. Our results show that local marine sources of DMS dominate the summer Arctic atmosphere, but that non-local and possibly non-marine contributions have a detectable ... |
author2 |
University of Toronto Department of Physics and Atmospheric Science Halifax Dalhousie University Halifax Université Laval Québec (ULaval) TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Department of Chemistry University of Toronto Department of Biology Québec Environment and Climate Change Canada |
format |
Conference Object |
author |
Mungall, Emma Croft, Betty Lizotte, Martine Thomas, Jennie L. Murphy, Jennifer G. Levasseur, Maurice Martin, Randall Wentzell, Jeremy Liggio, John Abbatt, Jonathan P. D. |
author_facet |
Mungall, Emma Croft, Betty Lizotte, Martine Thomas, Jennie L. Murphy, Jennifer G. Levasseur, Maurice Martin, Randall Wentzell, Jeremy Liggio, John Abbatt, Jonathan P. D. |
author_sort |
Mungall, Emma |
title |
Sources of Dimethyl Sulfide in the Canadian Arctic Archipelago and Baffin Bay |
title_short |
Sources of Dimethyl Sulfide in the Canadian Arctic Archipelago and Baffin Bay |
title_full |
Sources of Dimethyl Sulfide in the Canadian Arctic Archipelago and Baffin Bay |
title_fullStr |
Sources of Dimethyl Sulfide in the Canadian Arctic Archipelago and Baffin Bay |
title_full_unstemmed |
Sources of Dimethyl Sulfide in the Canadian Arctic Archipelago and Baffin Bay |
title_sort |
sources of dimethyl sulfide in the canadian arctic archipelago and baffin bay |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal-insu.archives-ouvertes.fr/insu-01247383 |
op_coverage |
San Francisco, United States |
long_lat |
ENVELOPE(-83.999,-83.999,74.218,74.218) |
geographic |
Arctic Baffin Bay Canadian Arctic Archipelago Hudson Hudson Bay Lancaster Sound |
geographic_facet |
Arctic Baffin Bay Canadian Arctic Archipelago Hudson Hudson Bay Lancaster Sound |
genre |
Arctic Archipelago Arctic Baffin Bay Baffin Bay Baffin Beaufort Sea Canadian Archipelago Canadian Arctic Archipelago Hudson Bay Lancaster Sound Tundra |
genre_facet |
Arctic Archipelago Arctic Baffin Bay Baffin Bay Baffin Beaufort Sea Canadian Archipelago Canadian Arctic Archipelago Hudson Bay Lancaster Sound Tundra |
op_source |
AGU Fall Meeting 2015 https://hal-insu.archives-ouvertes.fr/insu-01247383 AGU Fall Meeting 2015, Dec 2015, San Francisco, United States. pp.A231-03 |
op_relation |
insu-01247383 https://hal-insu.archives-ouvertes.fr/insu-01247383 |
_version_ |
1769003567733014528 |