Marine productivity response to Heinrich events: a model-data comparison
International audience Marine sediments records suggest large changes in marine productivity during glacial periods, with abrupt variations especially during the Heinrich events. Here, we study the response of marine biogeochemistry to such an event by using a biogeochemical model of the global ocea...
Published in: | Climate of the Past |
---|---|
Main Authors: | , , , , |
Other Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2012
|
Subjects: | |
Online Access: | https://hal.science/hal-02931502 https://hal.science/hal-02931502/document https://hal.science/hal-02931502/file/cp-8-1581-2012.pdf https://doi.org/10.5194/cp-8-1581-2012 |
id |
ftuniversailles:oai:HAL:hal-02931502v1 |
---|---|
record_format |
openpolar |
spelling |
ftuniversailles:oai:HAL:hal-02931502v1 2024-04-28T08:30:17+00:00 Marine productivity response to Heinrich events: a model-data comparison Mariotti, V. Bopp, L. Tagliabue, A. Kageyama, M. Swingedouw, D. Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) University of Cape Town Council for Scientific and Industrial Research Cape Town (CSIR) Ministery of Science and Technology Modélisation du climat (CLIM) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) 2012 https://hal.science/hal-02931502 https://hal.science/hal-02931502/document https://hal.science/hal-02931502/file/cp-8-1581-2012.pdf https://doi.org/10.5194/cp-8-1581-2012 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-8-1581-2012 hal-02931502 https://hal.science/hal-02931502 https://hal.science/hal-02931502/document https://hal.science/hal-02931502/file/cp-8-1581-2012.pdf doi:10.5194/cp-8-1581-2012 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-02931502 Climate of the Past, 2012, 8 (5), pp.1581-1598. ⟨10.5194/cp-8-1581-2012⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2012 ftuniversailles https://doi.org/10.5194/cp-8-1581-2012 2024-04-04T17:36:17Z International audience Marine sediments records suggest large changes in marine productivity during glacial periods, with abrupt variations especially during the Heinrich events. Here, we study the response of marine biogeochemistry to such an event by using a biogeochemical model of the global ocean (PISCES) coupled to an ocean-atmosphere general circulation model (IPSL-CM4). We conduct a 400-yr-long transient simulation under glacial climate conditions with a freshwater forcing of 0.1 Sv applied to the North Atlantic to mimic a Hein-rich event, alongside a glacial control simulation. To evaluate our numerical results, we have compiled the available marine productivity records covering Heinrich events. We find that simulated primary productivity and organic carbon export decrease globally (by 16 % for both) during a Hein-rich event, albeit with large regional variations. In our experiments , the North Atlantic displays a significant decrease, whereas the Southern Ocean shows an increase, in agreement with paleo-productivity reconstructions. In the Equatorial Pacific , the model simulates an increase in organic matter export production but decreased biogenic silica export. This antagonistic behaviour results from changes in relative uptake of carbon and silicic acid by diatoms. Reasonable agreement between model and data for the large-scale response to Hein-rich events gives confidence in models used to predict future centennial changes in marine production. In addition, our model allows us to investigate the mechanisms behind the observed changes in the response to Heinrich events. Article in Journal/Newspaper North Atlantic Southern Ocean Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Climate of the Past 8 5 1581 1598 |
institution |
Open Polar |
collection |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Mariotti, V. Bopp, L. Tagliabue, A. Kageyama, M. Swingedouw, D. Marine productivity response to Heinrich events: a model-data comparison |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Marine sediments records suggest large changes in marine productivity during glacial periods, with abrupt variations especially during the Heinrich events. Here, we study the response of marine biogeochemistry to such an event by using a biogeochemical model of the global ocean (PISCES) coupled to an ocean-atmosphere general circulation model (IPSL-CM4). We conduct a 400-yr-long transient simulation under glacial climate conditions with a freshwater forcing of 0.1 Sv applied to the North Atlantic to mimic a Hein-rich event, alongside a glacial control simulation. To evaluate our numerical results, we have compiled the available marine productivity records covering Heinrich events. We find that simulated primary productivity and organic carbon export decrease globally (by 16 % for both) during a Hein-rich event, albeit with large regional variations. In our experiments , the North Atlantic displays a significant decrease, whereas the Southern Ocean shows an increase, in agreement with paleo-productivity reconstructions. In the Equatorial Pacific , the model simulates an increase in organic matter export production but decreased biogenic silica export. This antagonistic behaviour results from changes in relative uptake of carbon and silicic acid by diatoms. Reasonable agreement between model and data for the large-scale response to Hein-rich events gives confidence in models used to predict future centennial changes in marine production. In addition, our model allows us to investigate the mechanisms behind the observed changes in the response to Heinrich events. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) University of Cape Town Council for Scientific and Industrial Research Cape Town (CSIR) Ministery of Science and Technology Modélisation du climat (CLIM) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) |
format |
Article in Journal/Newspaper |
author |
Mariotti, V. Bopp, L. Tagliabue, A. Kageyama, M. Swingedouw, D. |
author_facet |
Mariotti, V. Bopp, L. Tagliabue, A. Kageyama, M. Swingedouw, D. |
author_sort |
Mariotti, V. |
title |
Marine productivity response to Heinrich events: a model-data comparison |
title_short |
Marine productivity response to Heinrich events: a model-data comparison |
title_full |
Marine productivity response to Heinrich events: a model-data comparison |
title_fullStr |
Marine productivity response to Heinrich events: a model-data comparison |
title_full_unstemmed |
Marine productivity response to Heinrich events: a model-data comparison |
title_sort |
marine productivity response to heinrich events: a model-data comparison |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://hal.science/hal-02931502 https://hal.science/hal-02931502/document https://hal.science/hal-02931502/file/cp-8-1581-2012.pdf https://doi.org/10.5194/cp-8-1581-2012 |
genre |
North Atlantic Southern Ocean |
genre_facet |
North Atlantic Southern Ocean |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-02931502 Climate of the Past, 2012, 8 (5), pp.1581-1598. ⟨10.5194/cp-8-1581-2012⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-8-1581-2012 hal-02931502 https://hal.science/hal-02931502 https://hal.science/hal-02931502/document https://hal.science/hal-02931502/file/cp-8-1581-2012.pdf doi:10.5194/cp-8-1581-2012 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cp-8-1581-2012 |
container_title |
Climate of the Past |
container_volume |
8 |
container_issue |
5 |
container_start_page |
1581 |
op_container_end_page |
1598 |
_version_ |
1797588210623184896 |