Carbon Dynamics in Northern Marginal Seas
The marginal seas have, despite their relatively small area, an important role in the global carboncycle. They are largely influenced by carbon and nutrient fluxes from land and a large part of the biological production occurs in the marginal seas. The carbon dynamic in two shelf areas – The Baltic...
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ftunivgoeteborg:oai:gupea.ub.gu.se:2077/21245 2023-10-29T02:33:01+01:00 Carbon Dynamics in Northern Marginal Seas Hjalmarsson, Sofia 2009-11-27T12:39:51Z application/pdf http://hdl.handle.net/2077/21245 eng eng I. Hjalmarsson, S., Wesslander, K., Anderson, L.G., Omstedt, A., Perttilä, M., Mintrop, L. (2008). Distribution, long-term development and mass balance calculation of total alkalinity in the Baltic Sea. Continental Shelf Research, vol. 28, 593-601.::doi::10.1016/j.csr.2007.11.010 II. Hjalmarsson, S., Anderson, L.G., She, J. (2009). The exchange of dissolved inorganic carbon between the Baltic Sea and the North Sea in 2006 based on measured data and water transport estimates from a 3D model. resubmitted after revision to Marine Chemistry III. Hjalmarsson, S., Chierici, M., Anderson, L.G. (2009). Carbon dynamics in a productive coastal region – Skagerrak. submitted to Journal of Marine Systems IV. Anderson, L.G., Jutterström, S., Hjalmarsson, S., Wåhlström, I., Semiletov, I. (2009). Out-gassing of CO2 from Siberian Shelf seas by terrestrial organic matter composition. Geophysical Research Letters, vol. 36, L20601.::doi::10.1029/2009GL040046 V. Anderson, L.G., Tanhua, T., Björk, G., Hjalmarsson, S., Jones, E.P., Jutterström, S., Rudels, B., Swift, J.H., Wåhlström, I. (2009) Arctic Ocean Shelf – basin interaction, an active continental shelf CO2 pump and its impact on degree of calcium carbonate solubility. submitted to Deep Sea Research 978-91-628-7985-3 http://hdl.handle.net/2077/21245 dissolved inorganic carbon total alkalinity continental shelf pump marginal seas Baltic Sea Skagerrak Laptev Sea East Siberian Sea Chukchi Sea Text Doctoral thesis Doctor of Philosophy 2009 ftunivgoeteborg 2023-10-04T21:07:08Z The marginal seas have, despite their relatively small area, an important role in the global carboncycle. They are largely influenced by carbon and nutrient fluxes from land and a large part of the biological production occurs in the marginal seas. The carbon dynamic in two shelf areas – The Baltic Sea System (the Baltic Sea, the Kattegat and the Skagerrak) and the Siberian Shelf Seas (the Laptev Sea, the East Siberian Sea and the Chukchi Sea) has been studied in this thesis. Results from a study using historical data on Total Alkalinity (TA) from the Baltic Sea shows that there has been a change in the riverine TA concentrations. TA has increased in rivers draining areas where limestone dominates the bedrock while there has been a decrease in TA concentrations in granite dominated areas. We give two explanations to this change; acid precipitation and increased concentrations of CO2 from decay of organic matter. The Baltic Sea has high DIC concentration relative to its salinity (also due to river input) and as the surface water leaves the Baltic Sea also the DIC is exported and will in the end add to the North Sea carbon budget. We estimated the net carbon export from the Baltic Sea to 5.5 ± 0.3 Tg C/year. Furthermore, the carbon dynamics in the Skagerrak during 2006 has been studied and we found it to be a sink of carbon with a sea-air flux of 1.3 · 10^12 mol/m2/year. We also found Skagerrak to be a reasonable source of carbon to the North Sea by a continental shelf pump. In the Arctic and especially in the Laptev Sea, the large amounts of organic carbon transported by the major Russian rivers as well as from coastal erosion will decay in the shelf seas. This will result in a net efflux of CO2 to the atmosphere. However, in the eastern part of the East Siberian Sea and in the Chukchi Sea, the river discharge is much less and the biological activity is high. This will instead cause under-saturated surface waters in respect to CO2. The particulate organic carbon produced in the surface will sediment and starts to ... Doctoral or Postdoctoral Thesis Arctic Arctic Chukchi Chukchi Sea East Siberian Sea laptev Laptev Sea University of Gothenburg: GUPEA (Gothenburg University Publications Electronic Archive) |
institution |
Open Polar |
collection |
University of Gothenburg: GUPEA (Gothenburg University Publications Electronic Archive) |
op_collection_id |
ftunivgoeteborg |
language |
English |
topic |
dissolved inorganic carbon total alkalinity continental shelf pump marginal seas Baltic Sea Skagerrak Laptev Sea East Siberian Sea Chukchi Sea |
spellingShingle |
dissolved inorganic carbon total alkalinity continental shelf pump marginal seas Baltic Sea Skagerrak Laptev Sea East Siberian Sea Chukchi Sea Hjalmarsson, Sofia Carbon Dynamics in Northern Marginal Seas |
topic_facet |
dissolved inorganic carbon total alkalinity continental shelf pump marginal seas Baltic Sea Skagerrak Laptev Sea East Siberian Sea Chukchi Sea |
description |
The marginal seas have, despite their relatively small area, an important role in the global carboncycle. They are largely influenced by carbon and nutrient fluxes from land and a large part of the biological production occurs in the marginal seas. The carbon dynamic in two shelf areas – The Baltic Sea System (the Baltic Sea, the Kattegat and the Skagerrak) and the Siberian Shelf Seas (the Laptev Sea, the East Siberian Sea and the Chukchi Sea) has been studied in this thesis. Results from a study using historical data on Total Alkalinity (TA) from the Baltic Sea shows that there has been a change in the riverine TA concentrations. TA has increased in rivers draining areas where limestone dominates the bedrock while there has been a decrease in TA concentrations in granite dominated areas. We give two explanations to this change; acid precipitation and increased concentrations of CO2 from decay of organic matter. The Baltic Sea has high DIC concentration relative to its salinity (also due to river input) and as the surface water leaves the Baltic Sea also the DIC is exported and will in the end add to the North Sea carbon budget. We estimated the net carbon export from the Baltic Sea to 5.5 ± 0.3 Tg C/year. Furthermore, the carbon dynamics in the Skagerrak during 2006 has been studied and we found it to be a sink of carbon with a sea-air flux of 1.3 · 10^12 mol/m2/year. We also found Skagerrak to be a reasonable source of carbon to the North Sea by a continental shelf pump. In the Arctic and especially in the Laptev Sea, the large amounts of organic carbon transported by the major Russian rivers as well as from coastal erosion will decay in the shelf seas. This will result in a net efflux of CO2 to the atmosphere. However, in the eastern part of the East Siberian Sea and in the Chukchi Sea, the river discharge is much less and the biological activity is high. This will instead cause under-saturated surface waters in respect to CO2. The particulate organic carbon produced in the surface will sediment and starts to ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Hjalmarsson, Sofia |
author_facet |
Hjalmarsson, Sofia |
author_sort |
Hjalmarsson, Sofia |
title |
Carbon Dynamics in Northern Marginal Seas |
title_short |
Carbon Dynamics in Northern Marginal Seas |
title_full |
Carbon Dynamics in Northern Marginal Seas |
title_fullStr |
Carbon Dynamics in Northern Marginal Seas |
title_full_unstemmed |
Carbon Dynamics in Northern Marginal Seas |
title_sort |
carbon dynamics in northern marginal seas |
publishDate |
2009 |
url |
http://hdl.handle.net/2077/21245 |
genre |
Arctic Arctic Chukchi Chukchi Sea East Siberian Sea laptev Laptev Sea |
genre_facet |
Arctic Arctic Chukchi Chukchi Sea East Siberian Sea laptev Laptev Sea |
op_relation |
I. Hjalmarsson, S., Wesslander, K., Anderson, L.G., Omstedt, A., Perttilä, M., Mintrop, L. (2008). Distribution, long-term development and mass balance calculation of total alkalinity in the Baltic Sea. Continental Shelf Research, vol. 28, 593-601.::doi::10.1016/j.csr.2007.11.010 II. Hjalmarsson, S., Anderson, L.G., She, J. (2009). The exchange of dissolved inorganic carbon between the Baltic Sea and the North Sea in 2006 based on measured data and water transport estimates from a 3D model. resubmitted after revision to Marine Chemistry III. Hjalmarsson, S., Chierici, M., Anderson, L.G. (2009). Carbon dynamics in a productive coastal region – Skagerrak. submitted to Journal of Marine Systems IV. Anderson, L.G., Jutterström, S., Hjalmarsson, S., Wåhlström, I., Semiletov, I. (2009). Out-gassing of CO2 from Siberian Shelf seas by terrestrial organic matter composition. Geophysical Research Letters, vol. 36, L20601.::doi::10.1029/2009GL040046 V. Anderson, L.G., Tanhua, T., Björk, G., Hjalmarsson, S., Jones, E.P., Jutterström, S., Rudels, B., Swift, J.H., Wåhlström, I. (2009) Arctic Ocean Shelf – basin interaction, an active continental shelf CO2 pump and its impact on degree of calcium carbonate solubility. submitted to Deep Sea Research 978-91-628-7985-3 http://hdl.handle.net/2077/21245 |
_version_ |
1781054953531375616 |