Rapid response of greenhouse gas emission to early spring thaw in a subarctic mire as shown by micrometeorological techniques
Drivhusgas Most studies of soil/atmosphere greenhouse gas exchange in Arctic and Sub-Arctic wetlands have been conducted by the use of small scale chamber techniques during the growing season. To improve the knowledge about the processes in the transition period from winter to growth season, an expe...
Published in: | Geophysical Research Letters |
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1997
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Online Access: | https://curis.ku.dk/portal/da/publications/rapid-response-of-greenhouse-gas-emission-to-early-spring-thaw-in-a-subarctic-mire-as-shown-by-micrometeorological-techniques(6a7cf9c0-74cb-11db-bee9-02004c4f4f50).html https://doi.org/10.1029/97GL03024 |
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ftcopenhagenunip:oai:pure.atira.dk:publications/6a7cf9c0-74cb-11db-bee9-02004c4f4f50 2023-08-27T04:03:25+02:00 Rapid response of greenhouse gas emission to early spring thaw in a subarctic mire as shown by micrometeorological techniques Friborg, Thomas Christensen, T.R. Søgaard, Henrik 1997 https://curis.ku.dk/portal/da/publications/rapid-response-of-greenhouse-gas-emission-to-early-spring-thaw-in-a-subarctic-mire-as-shown-by-micrometeorological-techniques(6a7cf9c0-74cb-11db-bee9-02004c4f4f50).html https://doi.org/10.1029/97GL03024 eng eng info:eu-repo/semantics/closedAccess Friborg , T , Christensen , T R & Søgaard , H 1997 , ' Rapid response of greenhouse gas emission to early spring thaw in a subarctic mire as shown by micrometeorological techniques ' , Geophysical Research Letters , vol. 24 , no. 23 , 97GL03024 , pp. 3061-3064 . https://doi.org/10.1029/97GL03024 article 1997 ftcopenhagenunip https://doi.org/10.1029/97GL03024 2023-08-09T22:57:37Z Drivhusgas Most studies of soil/atmosphere greenhouse gas exchange in Arctic and Sub-Arctic wetlands have been conducted by the use of small scale chamber techniques during the growing season. To improve the knowledge about the processes in the transition period from winter to growth season, an experiment is presented here showing measurements of CH4, CO2 and H2O using both chambers (only CH4) and eddy correlation technique from the thaw period in early spring and during mid summer. The emphasis is on a comparison between eddy correlation and chamber measurements of methane fluxes during spring thawing in a subarctic mire near Abisko, northern Sweden. Methane exchange as measured by the two techniques is compared and evaluated in relation to temperature variations and atmospheric conductance. During the thaw period, integrated daily net fluxes of CH4 flux showed emission rates increasing from 2.6 mg m−2 d−1 to 22.5 mg m−2 d−1 within four days; the later rate corresponding to approximately 25% of the mid-summer flux. A profound diurnal cycle was observed in the release of methane, emphasising the importance of continuous measurements when calculating integrated fluxes. Article in Journal/Newspaper Abisko Arctic Northern Sweden Subarctic University of Copenhagen: Research Arctic Abisko ENVELOPE(18.829,18.829,68.349,68.349) Geophysical Research Letters 24 23 3061 3064 |
institution |
Open Polar |
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University of Copenhagen: Research |
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ftcopenhagenunip |
language |
English |
description |
Drivhusgas Most studies of soil/atmosphere greenhouse gas exchange in Arctic and Sub-Arctic wetlands have been conducted by the use of small scale chamber techniques during the growing season. To improve the knowledge about the processes in the transition period from winter to growth season, an experiment is presented here showing measurements of CH4, CO2 and H2O using both chambers (only CH4) and eddy correlation technique from the thaw period in early spring and during mid summer. The emphasis is on a comparison between eddy correlation and chamber measurements of methane fluxes during spring thawing in a subarctic mire near Abisko, northern Sweden. Methane exchange as measured by the two techniques is compared and evaluated in relation to temperature variations and atmospheric conductance. During the thaw period, integrated daily net fluxes of CH4 flux showed emission rates increasing from 2.6 mg m−2 d−1 to 22.5 mg m−2 d−1 within four days; the later rate corresponding to approximately 25% of the mid-summer flux. A profound diurnal cycle was observed in the release of methane, emphasising the importance of continuous measurements when calculating integrated fluxes. |
format |
Article in Journal/Newspaper |
author |
Friborg, Thomas Christensen, T.R. Søgaard, Henrik |
spellingShingle |
Friborg, Thomas Christensen, T.R. Søgaard, Henrik Rapid response of greenhouse gas emission to early spring thaw in a subarctic mire as shown by micrometeorological techniques |
author_facet |
Friborg, Thomas Christensen, T.R. Søgaard, Henrik |
author_sort |
Friborg, Thomas |
title |
Rapid response of greenhouse gas emission to early spring thaw in a subarctic mire as shown by micrometeorological techniques |
title_short |
Rapid response of greenhouse gas emission to early spring thaw in a subarctic mire as shown by micrometeorological techniques |
title_full |
Rapid response of greenhouse gas emission to early spring thaw in a subarctic mire as shown by micrometeorological techniques |
title_fullStr |
Rapid response of greenhouse gas emission to early spring thaw in a subarctic mire as shown by micrometeorological techniques |
title_full_unstemmed |
Rapid response of greenhouse gas emission to early spring thaw in a subarctic mire as shown by micrometeorological techniques |
title_sort |
rapid response of greenhouse gas emission to early spring thaw in a subarctic mire as shown by micrometeorological techniques |
publishDate |
1997 |
url |
https://curis.ku.dk/portal/da/publications/rapid-response-of-greenhouse-gas-emission-to-early-spring-thaw-in-a-subarctic-mire-as-shown-by-micrometeorological-techniques(6a7cf9c0-74cb-11db-bee9-02004c4f4f50).html https://doi.org/10.1029/97GL03024 |
long_lat |
ENVELOPE(18.829,18.829,68.349,68.349) |
geographic |
Arctic Abisko |
geographic_facet |
Arctic Abisko |
genre |
Abisko Arctic Northern Sweden Subarctic |
genre_facet |
Abisko Arctic Northern Sweden Subarctic |
op_source |
Friborg , T , Christensen , T R & Søgaard , H 1997 , ' Rapid response of greenhouse gas emission to early spring thaw in a subarctic mire as shown by micrometeorological techniques ' , Geophysical Research Letters , vol. 24 , no. 23 , 97GL03024 , pp. 3061-3064 . https://doi.org/10.1029/97GL03024 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1029/97GL03024 |
container_title |
Geophysical Research Letters |
container_volume |
24 |
container_issue |
23 |
container_start_page |
3061 |
op_container_end_page |
3064 |
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1775350577075585024 |