Evaluation of ocean dimethylsulfide concentration and emission in CMIP6 models
International audience Abstract. Characteristics and trends of surface ocean dimethylsulfide (DMS) concentrations and fluxes into the atmosphere of four Earth system models (ESMs: CNRM-ESM2-1, MIROC-ES2L, NorESM2-LM, and UKESM1-0-LL) are analysed over the recent past (1980–2009) and into the future,...
Published in: | Biogeosciences |
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Main Authors: | , , , , , , , , , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2021
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Subjects: | |
Online Access: | https://hal.science/hal-03975296 https://hal.science/hal-03975296/document https://hal.science/hal-03975296/file/bg-18-3823-2021.pdf https://doi.org/10.5194/bg-18-3823-2021 |
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ftinsu:oai:HAL:hal-03975296v1 |
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openpolar |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Bock, Josué Michou, Martine Nabat, Pierre Abe, Manabu Mulcahy, Jane Olivié, Dirk Schwinger, Jörg Suntharalingam, Parvadha Tjiputra, Jerry van Hulten, Marco Watanabe, Michio Yool, Andrew Séférian, Roland Evaluation of ocean dimethylsulfide concentration and emission in CMIP6 models |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Abstract. Characteristics and trends of surface ocean dimethylsulfide (DMS) concentrations and fluxes into the atmosphere of four Earth system models (ESMs: CNRM-ESM2-1, MIROC-ES2L, NorESM2-LM, and UKESM1-0-LL) are analysed over the recent past (1980–2009) and into the future, using Coupled Model Intercomparison Project 6 (CMIP6) simulations. The DMS concentrations in historical simulations systematically underestimate the most widely used observed climatology but compare more favourably against two recent observation-based datasets. The models better reproduce observations in mid to high latitudes, as well as in polar and westerlies marine biomes. The resulting multi-model estimate of contemporary global ocean DMS emissions is 16–24 Tg S yr−1, which is narrower than the observational-derived range of 16 to 28 Tg S yr−1. The four models disagree on the sign of the trend of the global DMS flux from 1980 onwards, with two models showing an increase and two models a decrease. At the global scale, these trends are dominated by changes in surface DMS concentrations in all models, irrespective of the air–sea flux parameterisation used. In turn, three models consistently show that changes in DMS concentrations are correlated with changes in marine productivity; however, marine productivity is poorly constrained in the current generation of ESMs, thus limiting the predictive ability of this relationship. In contrast, a consensus is found among all models over polar latitudes where an increasing trend is predominantly driven by the retreating sea-ice extent. However, the magnitude of this trend between models differs by a factor of 3, from 2.9 to 9.2 Gg S decade−1 over the period 1980–2014, which is at the low end of a recent satellite-derived analysis. Similar increasing trends are found in climate projections over the 21st century. |
author2 |
Groupe de Météorologie de Grande Échelle et Climat (GMGEC) Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Bock, Josué Michou, Martine Nabat, Pierre Abe, Manabu Mulcahy, Jane Olivié, Dirk Schwinger, Jörg Suntharalingam, Parvadha Tjiputra, Jerry van Hulten, Marco Watanabe, Michio Yool, Andrew Séférian, Roland |
author_facet |
Bock, Josué Michou, Martine Nabat, Pierre Abe, Manabu Mulcahy, Jane Olivié, Dirk Schwinger, Jörg Suntharalingam, Parvadha Tjiputra, Jerry van Hulten, Marco Watanabe, Michio Yool, Andrew Séférian, Roland |
author_sort |
Bock, Josué |
title |
Evaluation of ocean dimethylsulfide concentration and emission in CMIP6 models |
title_short |
Evaluation of ocean dimethylsulfide concentration and emission in CMIP6 models |
title_full |
Evaluation of ocean dimethylsulfide concentration and emission in CMIP6 models |
title_fullStr |
Evaluation of ocean dimethylsulfide concentration and emission in CMIP6 models |
title_full_unstemmed |
Evaluation of ocean dimethylsulfide concentration and emission in CMIP6 models |
title_sort |
evaluation of ocean dimethylsulfide concentration and emission in cmip6 models |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03975296 https://hal.science/hal-03975296/document https://hal.science/hal-03975296/file/bg-18-3823-2021.pdf https://doi.org/10.5194/bg-18-3823-2021 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.science/hal-03975296 Biogeosciences, 2021, 18 (12), pp.3823-3860. ⟨10.5194/bg-18-3823-2021⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-18-3823-2021 hal-03975296 https://hal.science/hal-03975296 https://hal.science/hal-03975296/document https://hal.science/hal-03975296/file/bg-18-3823-2021.pdf doi:10.5194/bg-18-3823-2021 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/bg-18-3823-2021 |
container_title |
Biogeosciences |
container_volume |
18 |
container_issue |
12 |
container_start_page |
3823 |
op_container_end_page |
3860 |
_version_ |
1785574539578572800 |
spelling |
ftinsu:oai:HAL:hal-03975296v1 2023-12-17T10:49:56+01:00 Evaluation of ocean dimethylsulfide concentration and emission in CMIP6 models Bock, Josué Michou, Martine Nabat, Pierre Abe, Manabu Mulcahy, Jane Olivié, Dirk Schwinger, Jörg Suntharalingam, Parvadha Tjiputra, Jerry van Hulten, Marco Watanabe, Michio Yool, Andrew Séférian, Roland Groupe de Météorologie de Grande Échelle et Climat (GMGEC) Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) 2021 https://hal.science/hal-03975296 https://hal.science/hal-03975296/document https://hal.science/hal-03975296/file/bg-18-3823-2021.pdf https://doi.org/10.5194/bg-18-3823-2021 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-18-3823-2021 hal-03975296 https://hal.science/hal-03975296 https://hal.science/hal-03975296/document https://hal.science/hal-03975296/file/bg-18-3823-2021.pdf doi:10.5194/bg-18-3823-2021 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.science/hal-03975296 Biogeosciences, 2021, 18 (12), pp.3823-3860. ⟨10.5194/bg-18-3823-2021⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2021 ftinsu https://doi.org/10.5194/bg-18-3823-2021 2023-11-22T17:28:38Z International audience Abstract. Characteristics and trends of surface ocean dimethylsulfide (DMS) concentrations and fluxes into the atmosphere of four Earth system models (ESMs: CNRM-ESM2-1, MIROC-ES2L, NorESM2-LM, and UKESM1-0-LL) are analysed over the recent past (1980–2009) and into the future, using Coupled Model Intercomparison Project 6 (CMIP6) simulations. The DMS concentrations in historical simulations systematically underestimate the most widely used observed climatology but compare more favourably against two recent observation-based datasets. The models better reproduce observations in mid to high latitudes, as well as in polar and westerlies marine biomes. The resulting multi-model estimate of contemporary global ocean DMS emissions is 16–24 Tg S yr−1, which is narrower than the observational-derived range of 16 to 28 Tg S yr−1. The four models disagree on the sign of the trend of the global DMS flux from 1980 onwards, with two models showing an increase and two models a decrease. At the global scale, these trends are dominated by changes in surface DMS concentrations in all models, irrespective of the air–sea flux parameterisation used. In turn, three models consistently show that changes in DMS concentrations are correlated with changes in marine productivity; however, marine productivity is poorly constrained in the current generation of ESMs, thus limiting the predictive ability of this relationship. In contrast, a consensus is found among all models over polar latitudes where an increasing trend is predominantly driven by the retreating sea-ice extent. However, the magnitude of this trend between models differs by a factor of 3, from 2.9 to 9.2 Gg S decade−1 over the period 1980–2014, which is at the low end of a recent satellite-derived analysis. Similar increasing trends are found in climate projections over the 21st century. Article in Journal/Newspaper Sea ice Institut national des sciences de l'Univers: HAL-INSU Biogeosciences 18 12 3823 3860 |