A model sensitivity study for the seaair 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 seaair exchange of methane is to increasing/decreasing sinks and sources as well as changes of di...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.664.7807 2023-05-15T14:53:36+02:00 A model sensitivity study for the seaair exchange of methane in the Laptev Sea, Arctic Ocean H. E. Markus Meier The Pennsylvania State University CiteSeerX Archives 2014 http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.7807 http://www.tellusb.net/index.php/tellusb/article/download/24174/pdf_1/ en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.7807 http://www.tellusb.net/index.php/tellusb/article/download/24174/pdf_1/ Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.tellusb.net/index.php/tellusb/article/download/24174/pdf_1/ Arctic Ocean Laptev Sea methane carbon seaair exchange modelling text 2014 ftciteseerx 2016-01-08T17:02:49Z 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 seaair 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 seaair 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. Text Arctic Arctic Ocean Climate change laptev Laptev Sea lena river Unknown Arctic Arctic Ocean Laptev Sea |
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ftciteseerx |
language |
English |
topic |
Arctic Ocean Laptev Sea methane carbon seaair exchange modelling |
spellingShingle |
Arctic Ocean Laptev Sea methane carbon seaair exchange modelling H. E. Markus Meier A model sensitivity study for the seaair exchange of methane in the Laptev Sea, Arctic Ocean |
topic_facet |
Arctic Ocean Laptev Sea methane carbon seaair exchange modelling |
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 seaair 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 seaair 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. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
H. E. Markus Meier |
author_facet |
H. E. Markus Meier |
author_sort |
H. E. Markus Meier |
title |
A model sensitivity study for the seaair exchange of methane in the Laptev Sea, Arctic Ocean |
title_short |
A model sensitivity study for the seaair exchange of methane in the Laptev Sea, Arctic Ocean |
title_full |
A model sensitivity study for the seaair exchange of methane in the Laptev Sea, Arctic Ocean |
title_fullStr |
A model sensitivity study for the seaair exchange of methane in the Laptev Sea, Arctic Ocean |
title_full_unstemmed |
A model sensitivity study for the seaair exchange of methane in the Laptev Sea, Arctic Ocean |
title_sort |
model sensitivity study for the seaair exchange of methane in the laptev sea, arctic ocean |
publishDate |
2014 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.7807 http://www.tellusb.net/index.php/tellusb/article/download/24174/pdf_1/ |
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 |
http://www.tellusb.net/index.php/tellusb/article/download/24174/pdf_1/ |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.7807 http://www.tellusb.net/index.php/tellusb/article/download/24174/pdf_1/ |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766325214084333568 |