The northern European shelf as an increasing net sink for CO 2
We developed a simple method to refine existing open-ocean maps and extend them towards different coastal seas. Using a multi-linear regression we produced monthly maps of surface ocean f CO 2 in the northern European coastal seas (the North Sea, the Baltic Sea, the Norwegian Coast and the Barents S...
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ftdoajarticles:oai:doaj.org/article:4914831d8d954b568652d6ff314bff0a 2023-05-15T15:38:48+02:00 The northern European shelf as an increasing net sink for CO 2 M. Becker A. Olsen P. Landschützer A. Omar G. Rehder C. Rödenbeck I. Skjelvan 2021-02-01T00:00:00Z https://doi.org/10.5194/bg-18-1127-2021 https://doaj.org/article/4914831d8d954b568652d6ff314bff0a EN eng Copernicus Publications https://bg.copernicus.org/articles/18/1127/2021/bg-18-1127-2021.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-18-1127-2021 1726-4170 1726-4189 https://doaj.org/article/4914831d8d954b568652d6ff314bff0a Biogeosciences, Vol 18, Pp 1127-1147 (2021) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2021 ftdoajarticles https://doi.org/10.5194/bg-18-1127-2021 2022-12-31T15:30:22Z We developed a simple method to refine existing open-ocean maps and extend them towards different coastal seas. Using a multi-linear regression we produced monthly maps of surface ocean f CO 2 in the northern European coastal seas (the North Sea, the Baltic Sea, the Norwegian Coast and the Barents Sea) covering a time period from 1998 to 2016. A comparison with gridded Surface Ocean CO 2 Atlas (SOCAT) v5 data revealed mean biases and standard deviations of 0 ± 26 µatm in the North Sea, 0 ± 16 µatm along the Norwegian Coast, 0 ± 19 µatm in the Barents Sea and 2 ± 42 µatm in the Baltic Sea. We used these maps to investigate trends in f CO 2 , pH and air–sea CO 2 flux. The surface ocean f CO 2 trends are smaller than the atmospheric trend in most of the studied regions. The only exception to this is the western part of the North Sea, where sea surface f CO 2 increases by 2 µatm yr −1 , which is similar to the atmospheric trend. The Baltic Sea does not show a significant trend. Here, the variability was much larger than the expected trends. Consistently, the pH trends were smaller than expected for an increase in f CO 2 in pace with the rise of atmospheric CO 2 levels. The calculated air–sea CO 2 fluxes revealed that most regions were net sinks for CO 2 . Only the southern North Sea and the Baltic Sea emitted CO 2 to the atmosphere. Especially in the northern regions the sink strength increased during the studied period. Article in Journal/Newspaper Barents Sea Directory of Open Access Journals: DOAJ Articles Barents Sea Biogeosciences 18 3 1127 1147 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 M. Becker A. Olsen P. Landschützer A. Omar G. Rehder C. Rödenbeck I. Skjelvan The northern European shelf as an increasing net sink for CO 2 |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
We developed a simple method to refine existing open-ocean maps and extend them towards different coastal seas. Using a multi-linear regression we produced monthly maps of surface ocean f CO 2 in the northern European coastal seas (the North Sea, the Baltic Sea, the Norwegian Coast and the Barents Sea) covering a time period from 1998 to 2016. A comparison with gridded Surface Ocean CO 2 Atlas (SOCAT) v5 data revealed mean biases and standard deviations of 0 ± 26 µatm in the North Sea, 0 ± 16 µatm along the Norwegian Coast, 0 ± 19 µatm in the Barents Sea and 2 ± 42 µatm in the Baltic Sea. We used these maps to investigate trends in f CO 2 , pH and air–sea CO 2 flux. The surface ocean f CO 2 trends are smaller than the atmospheric trend in most of the studied regions. The only exception to this is the western part of the North Sea, where sea surface f CO 2 increases by 2 µatm yr −1 , which is similar to the atmospheric trend. The Baltic Sea does not show a significant trend. Here, the variability was much larger than the expected trends. Consistently, the pH trends were smaller than expected for an increase in f CO 2 in pace with the rise of atmospheric CO 2 levels. The calculated air–sea CO 2 fluxes revealed that most regions were net sinks for CO 2 . Only the southern North Sea and the Baltic Sea emitted CO 2 to the atmosphere. Especially in the northern regions the sink strength increased during the studied period. |
format |
Article in Journal/Newspaper |
author |
M. Becker A. Olsen P. Landschützer A. Omar G. Rehder C. Rödenbeck I. Skjelvan |
author_facet |
M. Becker A. Olsen P. Landschützer A. Omar G. Rehder C. Rödenbeck I. Skjelvan |
author_sort |
M. Becker |
title |
The northern European shelf as an increasing net sink for CO 2 |
title_short |
The northern European shelf as an increasing net sink for CO 2 |
title_full |
The northern European shelf as an increasing net sink for CO 2 |
title_fullStr |
The northern European shelf as an increasing net sink for CO 2 |
title_full_unstemmed |
The northern European shelf as an increasing net sink for CO 2 |
title_sort |
northern european shelf as an increasing net sink for co 2 |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/bg-18-1127-2021 https://doaj.org/article/4914831d8d954b568652d6ff314bff0a |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_source |
Biogeosciences, Vol 18, Pp 1127-1147 (2021) |
op_relation |
https://bg.copernicus.org/articles/18/1127/2021/bg-18-1127-2021.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-18-1127-2021 1726-4170 1726-4189 https://doaj.org/article/4914831d8d954b568652d6ff314bff0a |
op_doi |
https://doi.org/10.5194/bg-18-1127-2021 |
container_title |
Biogeosciences |
container_volume |
18 |
container_issue |
3 |
container_start_page |
1127 |
op_container_end_page |
1147 |
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