Carbon and nutrient mixed layer dynamics in the Norwegian Sea
International audience A coupled carbon-ecosystem model is compared to recent data from Ocean Weather Ship M (66° N, 02° E) and used to investigate nutrient and carbon processes within the Norwegian Sea. Nitrate is consumed by phytoplankton in the surface layers over the summer; however the data sho...
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ftinsu:oai:HAL:hal-00297920v1 2023-11-12T04:23:31+01:00 Carbon and nutrient mixed layer dynamics in the Norwegian Sea Findlay, H. S. Tyrrell, T. Bellerby, R. G. J. Merico, A. Skjelvan, I. National Oceanography Centre Southampton (NOC) University of Southampton Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) University of Bergen (UiB) Institute for Coastal Research 2007-09-14 https://hal.science/hal-00297920 https://hal.science/hal-00297920/document https://hal.science/hal-00297920/file/bgd-4-3229-2007.pdf en eng HAL CCSD European Geosciences Union hal-00297920 https://hal.science/hal-00297920 https://hal.science/hal-00297920/document https://hal.science/hal-00297920/file/bgd-4-3229-2007.pdf info:eu-repo/semantics/OpenAccess ISSN: 1810-6277 EISSN: 1810-6285 Biogeosciences Discussions https://hal.science/hal-00297920 Biogeosciences Discussions, 2007, 4 (5), pp.3229-3265 [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2007 ftinsu 2023-10-25T16:28:21Z International audience A coupled carbon-ecosystem model is compared to recent data from Ocean Weather Ship M (66° N, 02° E) and used to investigate nutrient and carbon processes within the Norwegian Sea. Nitrate is consumed by phytoplankton in the surface layers over the summer; however the data show that silicate does not become rapidly limiting for diatoms, in contrast to the model prediction and in contrast to data from other temperate locations. The model estimates atmosphere-ocean CO 2 flux to be 37 g C m ?2 yr ?1 . A detailed comparison of the carbonate system at other ocean locations reveals that although coccolithophore blooms occur at OWS M, they are not as prevalent here as other areas. The seasonal cycles of calcite saturation state and [CO 3 2? ] are similar in the model and in data: values range from ~3 and ~120 ?mol kg ?1 respectively in winter, to ~4 and ~170 ?mol kg ?1 respectively in summer. The timing of coccolithophore blooms within the year therefore coincides with a time of high calcite saturation state, as predicted by previous modelling work. Article in Journal/Newspaper Norwegian Sea Institut national des sciences de l'Univers: HAL-INSU Norwegian Sea |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Findlay, H. S. Tyrrell, T. Bellerby, R. G. J. Merico, A. Skjelvan, I. Carbon and nutrient mixed layer dynamics in the Norwegian Sea |
topic_facet |
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience A coupled carbon-ecosystem model is compared to recent data from Ocean Weather Ship M (66° N, 02° E) and used to investigate nutrient and carbon processes within the Norwegian Sea. Nitrate is consumed by phytoplankton in the surface layers over the summer; however the data show that silicate does not become rapidly limiting for diatoms, in contrast to the model prediction and in contrast to data from other temperate locations. The model estimates atmosphere-ocean CO 2 flux to be 37 g C m ?2 yr ?1 . A detailed comparison of the carbonate system at other ocean locations reveals that although coccolithophore blooms occur at OWS M, they are not as prevalent here as other areas. The seasonal cycles of calcite saturation state and [CO 3 2? ] are similar in the model and in data: values range from ~3 and ~120 ?mol kg ?1 respectively in winter, to ~4 and ~170 ?mol kg ?1 respectively in summer. The timing of coccolithophore blooms within the year therefore coincides with a time of high calcite saturation state, as predicted by previous modelling work. |
author2 |
National Oceanography Centre Southampton (NOC) University of Southampton Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) University of Bergen (UiB) Institute for Coastal Research |
format |
Article in Journal/Newspaper |
author |
Findlay, H. S. Tyrrell, T. Bellerby, R. G. J. Merico, A. Skjelvan, I. |
author_facet |
Findlay, H. S. Tyrrell, T. Bellerby, R. G. J. Merico, A. Skjelvan, I. |
author_sort |
Findlay, H. S. |
title |
Carbon and nutrient mixed layer dynamics in the Norwegian Sea |
title_short |
Carbon and nutrient mixed layer dynamics in the Norwegian Sea |
title_full |
Carbon and nutrient mixed layer dynamics in the Norwegian Sea |
title_fullStr |
Carbon and nutrient mixed layer dynamics in the Norwegian Sea |
title_full_unstemmed |
Carbon and nutrient mixed layer dynamics in the Norwegian Sea |
title_sort |
carbon and nutrient mixed layer dynamics in the norwegian sea |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00297920 https://hal.science/hal-00297920/document https://hal.science/hal-00297920/file/bgd-4-3229-2007.pdf |
geographic |
Norwegian Sea |
geographic_facet |
Norwegian Sea |
genre |
Norwegian Sea |
genre_facet |
Norwegian Sea |
op_source |
ISSN: 1810-6277 EISSN: 1810-6285 Biogeosciences Discussions https://hal.science/hal-00297920 Biogeosciences Discussions, 2007, 4 (5), pp.3229-3265 |
op_relation |
hal-00297920 https://hal.science/hal-00297920 https://hal.science/hal-00297920/document https://hal.science/hal-00297920/file/bgd-4-3229-2007.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782338259458719744 |