Carbon and oxygen fluxes in the Barents and Norwegian Seas : production, air-sea exchange and budget calculations
This thesis focus on the carbon and oxygen fluxes in the Barents and Norwegian Seas and presents four studies where the main topics are variability of biological production, air-sea exchange and budget calculations. The world ocean is the largest short term reservoir of carbon on Earth, consequently...
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Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
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The University of Bergen
2007
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Online Access: | https://hdl.handle.net/1956/2602 |
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ftunivbergen:oai:bora.uib.no:1956/2602 2023-05-15T15:03:43+02:00 Carbon and oxygen fluxes in the Barents and Norwegian Seas : production, air-sea exchange and budget calculations Kivimäe, Caroline 2007-08-17 application/pdf https://hdl.handle.net/1956/2602 eng eng The University of Bergen urn:isbn:978-82-308-0414-8 (print version) https://hdl.handle.net/1956/2602 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 Doctoral thesis 2007 ftunivbergen 2023-03-14T17:41:47Z This thesis focus on the carbon and oxygen fluxes in the Barents and Norwegian Seas and presents four studies where the main topics are variability of biological production, air-sea exchange and budget calculations. The world ocean is the largest short term reservoir of carbon on Earth, consequently it has the potential to control the atmospheric concentrations of carbon dioxide (CO2) and has already taken up ~50 % of the antropogenically emitted CO2. It is thus important to study carbon related processes in the ocean to understand their changes in the past, present, and future perspectives. The main function of the Arctic Mediterranean, within which the study area lies, in the global carbon cycle is to take up CO2 from the atmosphere and, as part of the northern limb of the global thermohaline circulation, to convey surface water to the ocean interior. A carbon budget is constructed for the Barents Sea to study the carbon fluxes into and out of the area. The budget includes advection, air-sea exchange, river runoff, land sources and sedimentation. The results reviel that ~5.6 Gt C annually is exchanged through the boundaries of the Barents Sea mainly due to advection, and that the carbon sources within the Barents Sea itself are larger than the sinks. The change in carbon content of the Atlantic Water as it passes through the Barents Sea is investigated, revieling that ~0.030 Gt C is taken up from the atmosphere and exported to the Arctic Ocean during one year. The main part of the increased carbon content is channelled through biological production. Spatial and interannual variability of biological production and air-sea exchange is investigated in the north-western Barents Sea during the spring-summer season, interannual variability of oxygen and carbon fluxes due to biological production is also studied at Ocean Weather Station M in the Norwegian Sea. Both the spatial and interannual variability in the Barents Sea depend on the distribution of water masses and sea ice cover while the causes behind the ... Doctoral or Postdoctoral Thesis Arctic Arctic Ocean Barents Sea Norwegian Sea Sea ice University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Arctic Ocean Barents Sea Norwegian Sea |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 |
spellingShingle |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 Kivimäe, Caroline Carbon and oxygen fluxes in the Barents and Norwegian Seas : production, air-sea exchange and budget calculations |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 |
description |
This thesis focus on the carbon and oxygen fluxes in the Barents and Norwegian Seas and presents four studies where the main topics are variability of biological production, air-sea exchange and budget calculations. The world ocean is the largest short term reservoir of carbon on Earth, consequently it has the potential to control the atmospheric concentrations of carbon dioxide (CO2) and has already taken up ~50 % of the antropogenically emitted CO2. It is thus important to study carbon related processes in the ocean to understand their changes in the past, present, and future perspectives. The main function of the Arctic Mediterranean, within which the study area lies, in the global carbon cycle is to take up CO2 from the atmosphere and, as part of the northern limb of the global thermohaline circulation, to convey surface water to the ocean interior. A carbon budget is constructed for the Barents Sea to study the carbon fluxes into and out of the area. The budget includes advection, air-sea exchange, river runoff, land sources and sedimentation. The results reviel that ~5.6 Gt C annually is exchanged through the boundaries of the Barents Sea mainly due to advection, and that the carbon sources within the Barents Sea itself are larger than the sinks. The change in carbon content of the Atlantic Water as it passes through the Barents Sea is investigated, revieling that ~0.030 Gt C is taken up from the atmosphere and exported to the Arctic Ocean during one year. The main part of the increased carbon content is channelled through biological production. Spatial and interannual variability of biological production and air-sea exchange is investigated in the north-western Barents Sea during the spring-summer season, interannual variability of oxygen and carbon fluxes due to biological production is also studied at Ocean Weather Station M in the Norwegian Sea. Both the spatial and interannual variability in the Barents Sea depend on the distribution of water masses and sea ice cover while the causes behind the ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Kivimäe, Caroline |
author_facet |
Kivimäe, Caroline |
author_sort |
Kivimäe, Caroline |
title |
Carbon and oxygen fluxes in the Barents and Norwegian Seas : production, air-sea exchange and budget calculations |
title_short |
Carbon and oxygen fluxes in the Barents and Norwegian Seas : production, air-sea exchange and budget calculations |
title_full |
Carbon and oxygen fluxes in the Barents and Norwegian Seas : production, air-sea exchange and budget calculations |
title_fullStr |
Carbon and oxygen fluxes in the Barents and Norwegian Seas : production, air-sea exchange and budget calculations |
title_full_unstemmed |
Carbon and oxygen fluxes in the Barents and Norwegian Seas : production, air-sea exchange and budget calculations |
title_sort |
carbon and oxygen fluxes in the barents and norwegian seas : production, air-sea exchange and budget calculations |
publisher |
The University of Bergen |
publishDate |
2007 |
url |
https://hdl.handle.net/1956/2602 |
geographic |
Arctic Arctic Ocean Barents Sea Norwegian Sea |
geographic_facet |
Arctic Arctic Ocean Barents Sea Norwegian Sea |
genre |
Arctic Arctic Ocean Barents Sea Norwegian Sea Sea ice |
genre_facet |
Arctic Arctic Ocean Barents Sea Norwegian Sea Sea ice |
op_relation |
urn:isbn:978-82-308-0414-8 (print version) https://hdl.handle.net/1956/2602 |
_version_ |
1766335577967296512 |