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...
Published in: | Tellus B: Chemical and Physical Meteorology |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Oceanografi
2014
|
Subjects: | |
Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:smhi:diva-140 https://doi.org/10.3402/tellusb.v66.24174 |
id |
ftsmhi:oai:DiVA.org:smhi-140 |
---|---|
record_format |
openpolar |
spelling |
ftsmhi:oai:DiVA.org:smhi-140 2023-05-15T14:54:20+02:00 A model sensitivity study for the sea-air exchange of methane in the Laptev Sea, Arctic Ocean Wåhlstrom, Irene Meier, Markus 2014 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:smhi:diva-140 https://doi.org/10.3402/tellusb.v66.24174 eng eng Oceanografi Tellus. Series B, Chemical and physical meteorology, 0280-6509, 2014, 66, http://urn.kb.se/resolve?urn=urn:nbn:se:smhi:diva-140 doi:10.3402/tellusb.v66.24174 ISI:000343869400001 info:eu-repo/semantics/openAccess Arctic Ocean Laptev Sea methane carbon sea-air exchange modelling Oceanography Hydrology and Water Resources Oceanografi hydrologi och vattenresurser Article in journal info:eu-repo/semantics/article text 2014 ftsmhi https://doi.org/10.3402/tellusb.v66.24174 2022-12-09T10:06:10Z 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 SMHI (Swedish Meteorological and Hydrological Institute): Vetenskapliga Publikationer (DiVA) Arctic Arctic Ocean Laptev Sea Tellus B: Chemical and Physical Meteorology 66 1 24174 |
institution |
Open Polar |
collection |
SMHI (Swedish Meteorological and Hydrological Institute): Vetenskapliga Publikationer (DiVA) |
op_collection_id |
ftsmhi |
language |
English |
topic |
Arctic Ocean Laptev Sea methane carbon sea-air exchange modelling Oceanography Hydrology and Water Resources Oceanografi hydrologi och vattenresurser |
spellingShingle |
Arctic Ocean Laptev Sea methane carbon sea-air exchange modelling Oceanography Hydrology and Water Resources Oceanografi hydrologi och vattenresurser Wåhlstrom, Irene Meier, Markus 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 Oceanography Hydrology and Water Resources Oceanografi hydrologi och vattenresurser |
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 |
Wåhlstrom, Irene Meier, Markus |
author_facet |
Wåhlstrom, Irene Meier, Markus |
author_sort |
Wåhlstrom, Irene |
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 |
Oceanografi |
publishDate |
2014 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:smhi:diva-140 https://doi.org/10.3402/tellusb.v66.24174 |
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_relation |
Tellus. Series B, Chemical and physical meteorology, 0280-6509, 2014, 66, http://urn.kb.se/resolve?urn=urn:nbn:se:smhi:diva-140 doi:10.3402/tellusb.v66.24174 ISI:000343869400001 |
op_rights |
info:eu-repo/semantics/openAccess |
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 |
_version_ |
1766326041358368768 |