Drivers of Marine CO 2 ‐Carbonate Chemistry in the Northern Antarctic Peninsula
International audience The Bransfield Strait is a climate change hotspot at the tip of the northern Antarctic Peninsula (NAP). The region is marked by a mixture of relatively warm waters from the Bellingshausen Sea with cold shelf waters from the Weddell Sea. Additionally, its deep central basin (&g...
Published in: | Global Biogeochemical Cycles |
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2023
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Online Access: | https://univ-perp.hal.science/hal-04050313 https://univ-perp.hal.science/hal-04050313/document https://univ-perp.hal.science/hal-04050313/file/Goyet,%20Santos-Andrade%20et%20al%202023_CO2%20carbonate%20system%20NAP.pdf https://doi.org/10.1029/2022GB007518 |
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ftunivperpignan:oai:HAL:hal-04050313v1 2023-12-17T10:21:55+01:00 Drivers of Marine CO 2 ‐Carbonate Chemistry in the Northern Antarctic Peninsula Santos‐andrade, Maurício Kerr, Rodrigo Orselli, Iole, B M Monteiro, Thiago Mata, Mauricio, M Goyet, Catherine UMR 228 Espace-Dev, Espace pour le développement Institut de Recherche pour le Développement (IRD)-Université de Perpignan Via Domitia (UPVD)-Avignon Université (AU)-Université de La Réunion (UR)-Université de Guyane (UG)-Université des Antilles (UA)-Université de Montpellier (UM) 2023-03 https://univ-perp.hal.science/hal-04050313 https://univ-perp.hal.science/hal-04050313/document https://univ-perp.hal.science/hal-04050313/file/Goyet,%20Santos-Andrade%20et%20al%202023_CO2%20carbonate%20system%20NAP.pdf https://doi.org/10.1029/2022GB007518 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2022GB007518 hal-04050313 https://univ-perp.hal.science/hal-04050313 https://univ-perp.hal.science/hal-04050313/document https://univ-perp.hal.science/hal-04050313/file/Goyet,%20Santos-Andrade%20et%20al%202023_CO2%20carbonate%20system%20NAP.pdf doi:10.1029/2022GB007518 info:eu-repo/semantics/OpenAccess ISSN: 0886-6236 EISSN: 1944-8224 Global Biogeochemical Cycles https://univ-perp.hal.science/hal-04050313 Global Biogeochemical Cycles, 2023, 37 (3), ⟨10.1029/2022GB007518⟩ CO2 NORTHERN ANTARTIC PENINSULA [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2023 ftunivperpignan https://doi.org/10.1029/2022GB007518 2023-11-21T23:42:02Z International audience The Bransfield Strait is a climate change hotspot at the tip of the northern Antarctic Peninsula (NAP). The region is marked by a mixture of relatively warm waters from the Bellingshausen Sea with cold shelf waters from the Weddell Sea. Additionally, its deep central basin (>800 m) preserves seawater properties from the north-western Weddell Sea continental shelf. This study assessed long-term changes in carbonate chemistry in the Bransfield Strait and found that the hydrographic setting (i.e., a mixture between modified-Circumpolar Deep Water with Dense Shelf Water [DSW]) drives temporal variability of carbonate parameters. The western basin has experienced decreases in pH (seawater scale) over the last three decades (1996–2019), varying from −0.003 to −0.017 pH units yr −1, while Ωar decreased from −0.01 to −0.07 yr −1 throughout the water column. The central basin was characterized by a high contribution of DSW with high carbon dioxide (CO2) content and the decomposition of organic matter produced and transported into its deep layer. With lower variability for all carbonate system variables, the eastern basin was likely regulated by internal mixing. Overall, the entire strait is almost reaching a CO2-saturated condition, highlighting how sensitive subpolar regions are to the effects of human-induced climate change. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula antartic* Bellingshausen Sea Bransfield Strait Weddell Sea Université de Perpignan: HAL Antarctic Antarctic Peninsula Bellingshausen Sea Bransfield Strait Central Basin ENVELOPE(178.000,178.000,-72.300,-72.300) Weddell Weddell Sea Western Basin Global Biogeochemical Cycles 37 3 |
institution |
Open Polar |
collection |
Université de Perpignan: HAL |
op_collection_id |
ftunivperpignan |
language |
English |
topic |
CO2 NORTHERN ANTARTIC PENINSULA [SDE]Environmental Sciences |
spellingShingle |
CO2 NORTHERN ANTARTIC PENINSULA [SDE]Environmental Sciences Santos‐andrade, Maurício Kerr, Rodrigo Orselli, Iole, B M Monteiro, Thiago Mata, Mauricio, M Goyet, Catherine Drivers of Marine CO 2 ‐Carbonate Chemistry in the Northern Antarctic Peninsula |
topic_facet |
CO2 NORTHERN ANTARTIC PENINSULA [SDE]Environmental Sciences |
description |
International audience The Bransfield Strait is a climate change hotspot at the tip of the northern Antarctic Peninsula (NAP). The region is marked by a mixture of relatively warm waters from the Bellingshausen Sea with cold shelf waters from the Weddell Sea. Additionally, its deep central basin (>800 m) preserves seawater properties from the north-western Weddell Sea continental shelf. This study assessed long-term changes in carbonate chemistry in the Bransfield Strait and found that the hydrographic setting (i.e., a mixture between modified-Circumpolar Deep Water with Dense Shelf Water [DSW]) drives temporal variability of carbonate parameters. The western basin has experienced decreases in pH (seawater scale) over the last three decades (1996–2019), varying from −0.003 to −0.017 pH units yr −1, while Ωar decreased from −0.01 to −0.07 yr −1 throughout the water column. The central basin was characterized by a high contribution of DSW with high carbon dioxide (CO2) content and the decomposition of organic matter produced and transported into its deep layer. With lower variability for all carbonate system variables, the eastern basin was likely regulated by internal mixing. Overall, the entire strait is almost reaching a CO2-saturated condition, highlighting how sensitive subpolar regions are to the effects of human-induced climate change. |
author2 |
UMR 228 Espace-Dev, Espace pour le développement Institut de Recherche pour le Développement (IRD)-Université de Perpignan Via Domitia (UPVD)-Avignon Université (AU)-Université de La Réunion (UR)-Université de Guyane (UG)-Université des Antilles (UA)-Université de Montpellier (UM) |
format |
Article in Journal/Newspaper |
author |
Santos‐andrade, Maurício Kerr, Rodrigo Orselli, Iole, B M Monteiro, Thiago Mata, Mauricio, M Goyet, Catherine |
author_facet |
Santos‐andrade, Maurício Kerr, Rodrigo Orselli, Iole, B M Monteiro, Thiago Mata, Mauricio, M Goyet, Catherine |
author_sort |
Santos‐andrade, Maurício |
title |
Drivers of Marine CO 2 ‐Carbonate Chemistry in the Northern Antarctic Peninsula |
title_short |
Drivers of Marine CO 2 ‐Carbonate Chemistry in the Northern Antarctic Peninsula |
title_full |
Drivers of Marine CO 2 ‐Carbonate Chemistry in the Northern Antarctic Peninsula |
title_fullStr |
Drivers of Marine CO 2 ‐Carbonate Chemistry in the Northern Antarctic Peninsula |
title_full_unstemmed |
Drivers of Marine CO 2 ‐Carbonate Chemistry in the Northern Antarctic Peninsula |
title_sort |
drivers of marine co 2 ‐carbonate chemistry in the northern antarctic peninsula |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://univ-perp.hal.science/hal-04050313 https://univ-perp.hal.science/hal-04050313/document https://univ-perp.hal.science/hal-04050313/file/Goyet,%20Santos-Andrade%20et%20al%202023_CO2%20carbonate%20system%20NAP.pdf https://doi.org/10.1029/2022GB007518 |
long_lat |
ENVELOPE(178.000,178.000,-72.300,-72.300) |
geographic |
Antarctic Antarctic Peninsula Bellingshausen Sea Bransfield Strait Central Basin Weddell Weddell Sea Western Basin |
geographic_facet |
Antarctic Antarctic Peninsula Bellingshausen Sea Bransfield Strait Central Basin Weddell Weddell Sea Western Basin |
genre |
Antarc* Antarctic Antarctic Peninsula antartic* Bellingshausen Sea Bransfield Strait Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula antartic* Bellingshausen Sea Bransfield Strait Weddell Sea |
op_source |
ISSN: 0886-6236 EISSN: 1944-8224 Global Biogeochemical Cycles https://univ-perp.hal.science/hal-04050313 Global Biogeochemical Cycles, 2023, 37 (3), ⟨10.1029/2022GB007518⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2022GB007518 hal-04050313 https://univ-perp.hal.science/hal-04050313 https://univ-perp.hal.science/hal-04050313/document https://univ-perp.hal.science/hal-04050313/file/Goyet,%20Santos-Andrade%20et%20al%202023_CO2%20carbonate%20system%20NAP.pdf doi:10.1029/2022GB007518 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2022GB007518 |
container_title |
Global Biogeochemical Cycles |
container_volume |
37 |
container_issue |
3 |
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1785540521811247104 |