A catchment-scale carbon and greenhouse gas budget of a subarctic landscape
This is the first attempt to budget average current annual carbon (C) and associated greenhouse gas (GHG) exchanges and transfers in a subarctic landscape, the Lake Torneträsk catchment in northern Sweden. This is a heterogeneous area consisting of almost 4000km 2 of mixed heath, birch and pine fore...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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Language: | English |
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2007
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Online Access: | https://curis.ku.dk/portal/da/publications/a-catchmentscale-carbon-and-greenhouse-gas-budget-of-a-subarctic-landscape(845147e0-c815-11dc-bee9-02004c4f4f50).html https://doi.org/10.1098/rsta.2007.2035 |
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ftcopenhagenunip:oai:pure.atira.dk:publications/845147e0-c815-11dc-bee9-02004c4f4f50 2023-06-18T03:42:19+02:00 A catchment-scale carbon and greenhouse gas budget of a subarctic landscape Christensen, Torben R. Johansson, Paul Torbjörn Olsrud, Maria Ström, Lena Lindroth, Anders Mastepanov, Makhail Malmer, N. Friborg, Thomas Crill, Patrick Callaghan, Terry 2007 https://curis.ku.dk/portal/da/publications/a-catchmentscale-carbon-and-greenhouse-gas-budget-of-a-subarctic-landscape(845147e0-c815-11dc-bee9-02004c4f4f50).html https://doi.org/10.1098/rsta.2007.2035 eng eng info:eu-repo/semantics/restrictedAccess Christensen , T R , Johansson , P T , Olsrud , M , Ström , L , Lindroth , A , Mastepanov , M , Malmer , N , Friborg , T , Crill , P & Callaghan , T 2007 , ' A catchment-scale carbon and greenhouse gas budget of a subarctic landscape ' , Philosophical Transactions of the Royal Society, Series A , vol. 365 , no. 1856 , pp. 1643-1656 . https://doi.org/10.1098/rsta.2007.2035 article 2007 ftcopenhagenunip https://doi.org/10.1098/rsta.2007.2035 2023-06-07T23:31:33Z This is the first attempt to budget average current annual carbon (C) and associated greenhouse gas (GHG) exchanges and transfers in a subarctic landscape, the Lake Torneträsk catchment in northern Sweden. This is a heterogeneous area consisting of almost 4000km 2 of mixed heath, birch and pine forest, and mires, lakes and alpine ecosystems. The magnitudes of atmospheric exchange of carbon in the form of the GHGs, CO 2 and CH 4 in these various ecosystems differ significantly, ranging from little or no flux in barren ecosystems over a small CO 2 sink function and low rates of CH 4 exchange in the heaths to significant CO 2 uptake in the forests and also large emissions of CH 4 from the mires and small lakes. The overall catchment budget, given the size distribution of the individual ecosystem types and a first approximation of run-off as dissolved organic carbon, reveals a landscape currently with a significant sink capacity for atmospheric CO 2 . This sink capacity is, however, extremely sensitive to environmental changes, particularly those that affect the birch forest ecosystem. Climatic drying or wetting and episodic events such as insect outbreaks may cause significant changes in the sink function. Changes in the sources of CH 4 through increased permafrost melting may also easily change the sign of the current radiative forcing, due to the stronger impact per gram of CH 4 relative to CO 2 . Hence, to access impacts on climate, the atmospheric C balance alone has to be weighed in a radiative forcing perspective. When considering the emissions of CH 4 from the mires and lakes as CO 2 equivalents, the Torneträsk catchment is currently a smaller sink of radiative forcing, but it can still be estimated as representing the equivalent of approximately 14000 average Swedish inhabitants' emissions of CO 2 . This can be compared with the carbon emissions of less than 200 people who live permanently in the catchment, although this comparison disregards substantial emissions from the non-Swedish tourism and ... Article in Journal/Newspaper Northern Sweden permafrost Subarctic University of Copenhagen: Research Torneträsk ENVELOPE(18.861,18.861,68.392,68.392) Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 365 1856 1643 1656 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
This is the first attempt to budget average current annual carbon (C) and associated greenhouse gas (GHG) exchanges and transfers in a subarctic landscape, the Lake Torneträsk catchment in northern Sweden. This is a heterogeneous area consisting of almost 4000km 2 of mixed heath, birch and pine forest, and mires, lakes and alpine ecosystems. The magnitudes of atmospheric exchange of carbon in the form of the GHGs, CO 2 and CH 4 in these various ecosystems differ significantly, ranging from little or no flux in barren ecosystems over a small CO 2 sink function and low rates of CH 4 exchange in the heaths to significant CO 2 uptake in the forests and also large emissions of CH 4 from the mires and small lakes. The overall catchment budget, given the size distribution of the individual ecosystem types and a first approximation of run-off as dissolved organic carbon, reveals a landscape currently with a significant sink capacity for atmospheric CO 2 . This sink capacity is, however, extremely sensitive to environmental changes, particularly those that affect the birch forest ecosystem. Climatic drying or wetting and episodic events such as insect outbreaks may cause significant changes in the sink function. Changes in the sources of CH 4 through increased permafrost melting may also easily change the sign of the current radiative forcing, due to the stronger impact per gram of CH 4 relative to CO 2 . Hence, to access impacts on climate, the atmospheric C balance alone has to be weighed in a radiative forcing perspective. When considering the emissions of CH 4 from the mires and lakes as CO 2 equivalents, the Torneträsk catchment is currently a smaller sink of radiative forcing, but it can still be estimated as representing the equivalent of approximately 14000 average Swedish inhabitants' emissions of CO 2 . This can be compared with the carbon emissions of less than 200 people who live permanently in the catchment, although this comparison disregards substantial emissions from the non-Swedish tourism and ... |
format |
Article in Journal/Newspaper |
author |
Christensen, Torben R. Johansson, Paul Torbjörn Olsrud, Maria Ström, Lena Lindroth, Anders Mastepanov, Makhail Malmer, N. Friborg, Thomas Crill, Patrick Callaghan, Terry |
spellingShingle |
Christensen, Torben R. Johansson, Paul Torbjörn Olsrud, Maria Ström, Lena Lindroth, Anders Mastepanov, Makhail Malmer, N. Friborg, Thomas Crill, Patrick Callaghan, Terry A catchment-scale carbon and greenhouse gas budget of a subarctic landscape |
author_facet |
Christensen, Torben R. Johansson, Paul Torbjörn Olsrud, Maria Ström, Lena Lindroth, Anders Mastepanov, Makhail Malmer, N. Friborg, Thomas Crill, Patrick Callaghan, Terry |
author_sort |
Christensen, Torben R. |
title |
A catchment-scale carbon and greenhouse gas budget of a subarctic landscape |
title_short |
A catchment-scale carbon and greenhouse gas budget of a subarctic landscape |
title_full |
A catchment-scale carbon and greenhouse gas budget of a subarctic landscape |
title_fullStr |
A catchment-scale carbon and greenhouse gas budget of a subarctic landscape |
title_full_unstemmed |
A catchment-scale carbon and greenhouse gas budget of a subarctic landscape |
title_sort |
catchment-scale carbon and greenhouse gas budget of a subarctic landscape |
publishDate |
2007 |
url |
https://curis.ku.dk/portal/da/publications/a-catchmentscale-carbon-and-greenhouse-gas-budget-of-a-subarctic-landscape(845147e0-c815-11dc-bee9-02004c4f4f50).html https://doi.org/10.1098/rsta.2007.2035 |
long_lat |
ENVELOPE(18.861,18.861,68.392,68.392) |
geographic |
Torneträsk |
geographic_facet |
Torneträsk |
genre |
Northern Sweden permafrost Subarctic |
genre_facet |
Northern Sweden permafrost Subarctic |
op_source |
Christensen , T R , Johansson , P T , Olsrud , M , Ström , L , Lindroth , A , Mastepanov , M , Malmer , N , Friborg , T , Crill , P & Callaghan , T 2007 , ' A catchment-scale carbon and greenhouse gas budget of a subarctic landscape ' , Philosophical Transactions of the Royal Society, Series A , vol. 365 , no. 1856 , pp. 1643-1656 . https://doi.org/10.1098/rsta.2007.2035 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1098/rsta.2007.2035 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
365 |
container_issue |
1856 |
container_start_page |
1643 |
op_container_end_page |
1656 |
_version_ |
1769008207951298560 |