Inorganic carbon time series at Ocean Weather Station M in the Norwegian Sea
International audience Dissolved inorganic carbon ( C T ) has been collected at Ocean Weather Station M (OWSM) in the Norwegian Sea since 2001. Seasonal variations in C T are confined to the upper 50 m, where the biology is active, and below this layer no clear seasonal signal is seen. From winter t...
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ftinsu:oai:HAL:hal-00297915v1 2023-11-12T04:13:30+01:00 Inorganic carbon time series at Ocean Weather Station M in the Norwegian Sea Skjelvan, I. Falck, E. Rey, F. Kringstad, S. B. Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) Geophysical Institute Bergen (GFI / BiU) University of Bergen (UiB) Institute of Marine Research Bergen (IMR) 2007-08-27 https://hal.science/hal-00297915 https://hal.science/hal-00297915/document https://hal.science/hal-00297915/file/bgd-4-2929-2007.pdf en eng HAL CCSD European Geosciences Union hal-00297915 https://hal.science/hal-00297915 https://hal.science/hal-00297915/document https://hal.science/hal-00297915/file/bgd-4-2929-2007.pdf info:eu-repo/semantics/OpenAccess ISSN: 1810-6277 EISSN: 1810-6285 Biogeosciences Discussions https://hal.science/hal-00297915 Biogeosciences Discussions, 2007, 4 (4), pp.2929-2958 [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 Dissolved inorganic carbon ( C T ) has been collected at Ocean Weather Station M (OWSM) in the Norwegian Sea since 2001. Seasonal variations in C T are confined to the upper 50 m, where the biology is active, and below this layer no clear seasonal signal is seen. From winter to summer the surface C T concentration typical drops from 2140 to about 2040 ?mol kg ?1 , while a deep water C T concentration of about 2163 ?mol kg ?1 is measured throughout the year. Observations show an annual increase in salinity normalized carbon concentration (n C T ) of 1.3±0.7 ?mol kg ?1 in the surface layer, which is equivalent to a pCO 2 increase of 2.6±1.2 ?atm yr ?1 , i.e. larger than the atmospheric increase in this area. Observations also show an annual increase in the deep water n C T of 0.57± 0.24 ?mol kg ?1 , of which about a tenth is due to inflow of old Arctic water with larger amounts of remineralised matter. The remaining part has an anthropogenic origin and sources for this might be Greenland Sea surface water, Iceland Sea surface water, and/or recirculated Atlantic Water. By using an extended multi linear regression method (eMLR) it is verified that anthropogenic carbon has entered the whole water column at OWSM. Article in Journal/Newspaper Arctic Greenland Greenland Sea Iceland Norwegian Sea Institut national des sciences de l'Univers: HAL-INSU Arctic Norwegian Sea Greenland |
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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 Skjelvan, I. Falck, E. Rey, F. Kringstad, S. B. Inorganic carbon time series at Ocean Weather Station M 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 Dissolved inorganic carbon ( C T ) has been collected at Ocean Weather Station M (OWSM) in the Norwegian Sea since 2001. Seasonal variations in C T are confined to the upper 50 m, where the biology is active, and below this layer no clear seasonal signal is seen. From winter to summer the surface C T concentration typical drops from 2140 to about 2040 ?mol kg ?1 , while a deep water C T concentration of about 2163 ?mol kg ?1 is measured throughout the year. Observations show an annual increase in salinity normalized carbon concentration (n C T ) of 1.3±0.7 ?mol kg ?1 in the surface layer, which is equivalent to a pCO 2 increase of 2.6±1.2 ?atm yr ?1 , i.e. larger than the atmospheric increase in this area. Observations also show an annual increase in the deep water n C T of 0.57± 0.24 ?mol kg ?1 , of which about a tenth is due to inflow of old Arctic water with larger amounts of remineralised matter. The remaining part has an anthropogenic origin and sources for this might be Greenland Sea surface water, Iceland Sea surface water, and/or recirculated Atlantic Water. By using an extended multi linear regression method (eMLR) it is verified that anthropogenic carbon has entered the whole water column at OWSM. |
author2 |
Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) Geophysical Institute Bergen (GFI / BiU) University of Bergen (UiB) Institute of Marine Research Bergen (IMR) |
format |
Article in Journal/Newspaper |
author |
Skjelvan, I. Falck, E. Rey, F. Kringstad, S. B. |
author_facet |
Skjelvan, I. Falck, E. Rey, F. Kringstad, S. B. |
author_sort |
Skjelvan, I. |
title |
Inorganic carbon time series at Ocean Weather Station M in the Norwegian Sea |
title_short |
Inorganic carbon time series at Ocean Weather Station M in the Norwegian Sea |
title_full |
Inorganic carbon time series at Ocean Weather Station M in the Norwegian Sea |
title_fullStr |
Inorganic carbon time series at Ocean Weather Station M in the Norwegian Sea |
title_full_unstemmed |
Inorganic carbon time series at Ocean Weather Station M in the Norwegian Sea |
title_sort |
inorganic carbon time series at ocean weather station m in the norwegian sea |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00297915 https://hal.science/hal-00297915/document https://hal.science/hal-00297915/file/bgd-4-2929-2007.pdf |
geographic |
Arctic Norwegian Sea Greenland |
geographic_facet |
Arctic Norwegian Sea Greenland |
genre |
Arctic Greenland Greenland Sea Iceland Norwegian Sea |
genre_facet |
Arctic Greenland Greenland Sea Iceland Norwegian Sea |
op_source |
ISSN: 1810-6277 EISSN: 1810-6285 Biogeosciences Discussions https://hal.science/hal-00297915 Biogeosciences Discussions, 2007, 4 (4), pp.2929-2958 |
op_relation |
hal-00297915 https://hal.science/hal-00297915 https://hal.science/hal-00297915/document https://hal.science/hal-00297915/file/bgd-4-2929-2007.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782331467946262528 |