A model sensitivity study for the sea–air exchange of methane in the Laptev Sea, Arctic Ocean
The ocean's sinks and sources determine the concentration of methane in the water column and by that regulating the emission of methane to the atmosphere. In this study, we investigate how sensitive the sea–air exchange of methane is to increasing/decreasing sinks and sources as well as changes...
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Stockholm University Press
2014
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ftdoajarticles:oai:doaj.org/article:5b66c87c73c642e9ad2acd97bc88b509 2023-05-15T14:54:13+02:00 A model sensitivity study for the sea–air exchange of methane in the Laptev Sea, Arctic Ocean Iréne Wåhlström H. E. Markus Meier 2014-10-01T00:00:00Z https://doi.org/10.3402/tellusb.v66.24174 https://doaj.org/article/5b66c87c73c642e9ad2acd97bc88b509 EN eng Stockholm University Press http://www.tellusb.net/index.php/tellusb/article/download/24174/pdf_1 https://doaj.org/toc/1600-0889 1600-0889 doi:10.3402/tellusb.v66.24174 https://doaj.org/article/5b66c87c73c642e9ad2acd97bc88b509 Tellus: Series B, Chemical and Physical Meteorology, Vol 66, Iss 0, Pp 1-16 (2014) Arctic Ocean Laptev Sea methane carbon sea–air exchange modelling Meteorology. Climatology QC851-999 article 2014 ftdoajarticles https://doi.org/10.3402/tellusb.v66.24174 2022-12-30T23:53:48Z The ocean's sinks and sources determine the concentration of methane in the water column and by that regulating the emission of methane to the atmosphere. In this study, we investigate how sensitive the sea–air exchange of methane is to increasing/decreasing sinks and sources as well as changes of different drivers with a time-dependent biogeochemical budget model for one of the shallow shelf sea in the Siberian Arctic, the Laptev Sea. The applied changes are: increased air temperature, river discharge, wind, atmospheric methane, concentration of nutrients in the river runoff or flux of methane from the sediment. Furthermore, simulations are performed to examine how the large range in observations for methane concentration in the Lena River as well as the rate of oxidation affects the net sea–air exchange. In addition, a simulation with five of these changes applied together was carried out to simulate expected climate change at the end of this century. The result indicates that none of the simulations changed the seawater to becoming a net sink for atmospheric methane and all simulations except three increased the outgassing to the atmosphere. The three exceptions were: doubling the atmospheric methane, decreasing the rivers’ concentration of methane and increasing the oxidation rate where the latter is one of the key mechanisms controlling emission of methane to the atmosphere. Article in Journal/Newspaper Arctic Arctic Ocean Climate change laptev Laptev Sea lena river Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Laptev Sea Tellus B: Chemical and Physical Meteorology 66 1 24174 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic Ocean Laptev Sea methane carbon sea–air exchange modelling Meteorology. Climatology QC851-999 |
spellingShingle |
Arctic Ocean Laptev Sea methane carbon sea–air exchange modelling Meteorology. Climatology QC851-999 Iréne Wåhlström H. E. Markus Meier A model sensitivity study for the sea–air exchange of methane in the Laptev Sea, Arctic Ocean |
topic_facet |
Arctic Ocean Laptev Sea methane carbon sea–air exchange modelling Meteorology. Climatology QC851-999 |
description |
The ocean's sinks and sources determine the concentration of methane in the water column and by that regulating the emission of methane to the atmosphere. In this study, we investigate how sensitive the sea–air exchange of methane is to increasing/decreasing sinks and sources as well as changes of different drivers with a time-dependent biogeochemical budget model for one of the shallow shelf sea in the Siberian Arctic, the Laptev Sea. The applied changes are: increased air temperature, river discharge, wind, atmospheric methane, concentration of nutrients in the river runoff or flux of methane from the sediment. Furthermore, simulations are performed to examine how the large range in observations for methane concentration in the Lena River as well as the rate of oxidation affects the net sea–air exchange. In addition, a simulation with five of these changes applied together was carried out to simulate expected climate change at the end of this century. The result indicates that none of the simulations changed the seawater to becoming a net sink for atmospheric methane and all simulations except three increased the outgassing to the atmosphere. The three exceptions were: doubling the atmospheric methane, decreasing the rivers’ concentration of methane and increasing the oxidation rate where the latter is one of the key mechanisms controlling emission of methane to the atmosphere. |
format |
Article in Journal/Newspaper |
author |
Iréne Wåhlström H. E. Markus Meier |
author_facet |
Iréne Wåhlström H. E. Markus Meier |
author_sort |
Iréne Wåhlström |
title |
A model sensitivity study for the sea–air exchange of methane in the Laptev Sea, Arctic Ocean |
title_short |
A model sensitivity study for the sea–air exchange of methane in the Laptev Sea, Arctic Ocean |
title_full |
A model sensitivity study for the sea–air exchange of methane in the Laptev Sea, Arctic Ocean |
title_fullStr |
A model sensitivity study for the sea–air exchange of methane in the Laptev Sea, Arctic Ocean |
title_full_unstemmed |
A model sensitivity study for the sea–air exchange of methane in the Laptev Sea, Arctic Ocean |
title_sort |
model sensitivity study for the sea–air exchange of methane in the laptev sea, arctic ocean |
publisher |
Stockholm University Press |
publishDate |
2014 |
url |
https://doi.org/10.3402/tellusb.v66.24174 https://doaj.org/article/5b66c87c73c642e9ad2acd97bc88b509 |
geographic |
Arctic Arctic Ocean Laptev Sea |
geographic_facet |
Arctic Arctic Ocean Laptev Sea |
genre |
Arctic Arctic Ocean Climate change laptev Laptev Sea lena river |
genre_facet |
Arctic Arctic Ocean Climate change laptev Laptev Sea lena river |
op_source |
Tellus: Series B, Chemical and Physical Meteorology, Vol 66, Iss 0, Pp 1-16 (2014) |
op_relation |
http://www.tellusb.net/index.php/tellusb/article/download/24174/pdf_1 https://doaj.org/toc/1600-0889 1600-0889 doi:10.3402/tellusb.v66.24174 https://doaj.org/article/5b66c87c73c642e9ad2acd97bc88b509 |
op_doi |
https://doi.org/10.3402/tellusb.v66.24174 |
container_title |
Tellus B: Chemical and Physical Meteorology |
container_volume |
66 |
container_issue |
1 |
container_start_page |
24174 |
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1766325943038640128 |