Spatiotemporal Variability in Modeled Bottom Ice and Sea Surface Dimethylsulfide Concentrations and Fluxes in the Arctic During 1979–2015
Field observations suggest that oceanic emissions of dimethylsulfide (DMS) may play a dominant role in the production of Arctic aerosols and clouds and therefore modulate the surface irradiance, during spring and summer. DMS is produced not only in the water column but also in various sea ice habita...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/313878 2023-05-15T14:37:39+02:00 Spatiotemporal Variability in Modeled Bottom Ice and Sea Surface Dimethylsulfide Concentrations and Fluxes in the Arctic During 1979–2015 Hayashida, Hakase Carnat, Gauthier Galí, Martí Monahan, Adam Hugh Mortenson, Eric Sou, Tessa Steiner, Nadja 2020-10 No full-text files http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/313878 en eng uri/info:doi/10.1029/2019GB006456 uri/info:scp/85093986305 http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/313878 Global biogeochemical cycles, 34 (10 Environnement et pollution Technologie de l'environnement contrôle de la pollution Phénomènes atmosphériques Arctic Ocean dimethylsulfide emission ice algae numerical model simulation sea ice biogeochemistry info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2020 ftunivbruxelles 2022-06-12T21:59:25Z Field observations suggest that oceanic emissions of dimethylsulfide (DMS) may play a dominant role in the production of Arctic aerosols and clouds and therefore modulate the surface irradiance, during spring and summer. DMS is produced not only in the water column but also in various sea ice habitats. The ongoing recession of Arctic sea ice is expected to enhance DMS emissions, but the magnitude of this increase is highly uncertain. Here we investigate the spatiotemporal variability in bottom ice and sea surface DMS concentrations and fluxes using a regional sea ice-ocean physical-biogeochemical model. Model results indicate that the observed accelerated decline of Arctic sea ice extent since the beginning of the 21st century is associated with upward trends in May–August pan-Arctic-averaged sea surface DMS concentration and sea-to-air DMS flux. On the other hand, strong interannual variability and statistically insignificant trends are found for bottom ice DMS concentration and ice-to-sea DMS flux, owing to the counteracting effects of the shrinking horizontal extent and the vertical thinning of sea ice on ice algal production. The pan-Arctic DMS climatology products based on model simulation and satellite algorithms provide dynamically based spatial details that are absent in the in situ measurement-based climatology due to limited spatiotemporal data coverage and inevitable extrapolation bias. Lastly, model results indicate that the bottom ice DMS and its precursor dimethylsulfoniopropionate production can be the only local source of oceanic DMS emissions into the atmosphere during May prior to pelagic blooms, suggesting that it may be a key component of the biological control on Arctic climate at that time. SCOPUS: ar.j DecretOANoAutActif info:eu-repo/semantics/published Article in Journal/Newspaper Arctic Arctic Ocean ice algae Sea ice DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) Arctic Arctic Ocean |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Environnement et pollution Technologie de l'environnement contrôle de la pollution Phénomènes atmosphériques Arctic Ocean dimethylsulfide emission ice algae numerical model simulation sea ice biogeochemistry |
spellingShingle |
Environnement et pollution Technologie de l'environnement contrôle de la pollution Phénomènes atmosphériques Arctic Ocean dimethylsulfide emission ice algae numerical model simulation sea ice biogeochemistry Hayashida, Hakase Carnat, Gauthier Galí, Martí Monahan, Adam Hugh Mortenson, Eric Sou, Tessa Steiner, Nadja Spatiotemporal Variability in Modeled Bottom Ice and Sea Surface Dimethylsulfide Concentrations and Fluxes in the Arctic During 1979–2015 |
topic_facet |
Environnement et pollution Technologie de l'environnement contrôle de la pollution Phénomènes atmosphériques Arctic Ocean dimethylsulfide emission ice algae numerical model simulation sea ice biogeochemistry |
description |
Field observations suggest that oceanic emissions of dimethylsulfide (DMS) may play a dominant role in the production of Arctic aerosols and clouds and therefore modulate the surface irradiance, during spring and summer. DMS is produced not only in the water column but also in various sea ice habitats. The ongoing recession of Arctic sea ice is expected to enhance DMS emissions, but the magnitude of this increase is highly uncertain. Here we investigate the spatiotemporal variability in bottom ice and sea surface DMS concentrations and fluxes using a regional sea ice-ocean physical-biogeochemical model. Model results indicate that the observed accelerated decline of Arctic sea ice extent since the beginning of the 21st century is associated with upward trends in May–August pan-Arctic-averaged sea surface DMS concentration and sea-to-air DMS flux. On the other hand, strong interannual variability and statistically insignificant trends are found for bottom ice DMS concentration and ice-to-sea DMS flux, owing to the counteracting effects of the shrinking horizontal extent and the vertical thinning of sea ice on ice algal production. The pan-Arctic DMS climatology products based on model simulation and satellite algorithms provide dynamically based spatial details that are absent in the in situ measurement-based climatology due to limited spatiotemporal data coverage and inevitable extrapolation bias. Lastly, model results indicate that the bottom ice DMS and its precursor dimethylsulfoniopropionate production can be the only local source of oceanic DMS emissions into the atmosphere during May prior to pelagic blooms, suggesting that it may be a key component of the biological control on Arctic climate at that time. SCOPUS: ar.j DecretOANoAutActif info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Hayashida, Hakase Carnat, Gauthier Galí, Martí Monahan, Adam Hugh Mortenson, Eric Sou, Tessa Steiner, Nadja |
author_facet |
Hayashida, Hakase Carnat, Gauthier Galí, Martí Monahan, Adam Hugh Mortenson, Eric Sou, Tessa Steiner, Nadja |
author_sort |
Hayashida, Hakase |
title |
Spatiotemporal Variability in Modeled Bottom Ice and Sea Surface Dimethylsulfide Concentrations and Fluxes in the Arctic During 1979–2015 |
title_short |
Spatiotemporal Variability in Modeled Bottom Ice and Sea Surface Dimethylsulfide Concentrations and Fluxes in the Arctic During 1979–2015 |
title_full |
Spatiotemporal Variability in Modeled Bottom Ice and Sea Surface Dimethylsulfide Concentrations and Fluxes in the Arctic During 1979–2015 |
title_fullStr |
Spatiotemporal Variability in Modeled Bottom Ice and Sea Surface Dimethylsulfide Concentrations and Fluxes in the Arctic During 1979–2015 |
title_full_unstemmed |
Spatiotemporal Variability in Modeled Bottom Ice and Sea Surface Dimethylsulfide Concentrations and Fluxes in the Arctic During 1979–2015 |
title_sort |
spatiotemporal variability in modeled bottom ice and sea surface dimethylsulfide concentrations and fluxes in the arctic during 1979–2015 |
publishDate |
2020 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/313878 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean ice algae Sea ice |
genre_facet |
Arctic Arctic Ocean ice algae Sea ice |
op_source |
Global biogeochemical cycles, 34 (10 |
op_relation |
uri/info:doi/10.1029/2019GB006456 uri/info:scp/85093986305 http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/313878 |
_version_ |
1766309860398333952 |