A new numerical model for understanding free and dissolved gasprogression toward the atmosphere in aquatic methane seepage systems
Source at https://doi.org/10.1002/lom3.10307 . We present a marine two‐phase gas model in one dimension (M2PG1) resolving interaction between the free and dissolved gas phases and the gas propagation toward the atmosphere in aquatic environments. The motivation for the model development was to impro...
Published in: | Limnology and Oceanography: Methods |
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Online Access: | https://hdl.handle.net/10037/15432 https://doi.org/10.1002/lom3.10307 |
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ftunivtroemsoe:oai:munin.uit.no:10037/15432 2023-05-15T14:27:59+02:00 A new numerical model for understanding free and dissolved gasprogression toward the atmosphere in aquatic methane seepage systems Jansson, Pär Ferré, Benedicte Silyakova, Anna Dølven, Knut Ola Omstedt, Anders 2019-01-16 https://hdl.handle.net/10037/15432 https://doi.org/10.1002/lom3.10307 eng eng Association for the Sciences of Limnology and Oceanography Jansson, P., Ferre, B., Silyakova, A., Dølven, K.O. & Omstedt, A. (2019). Replication Data for: A new numerical model for understanding free and dissolved gas progression towards the atmosphere in aquatic methane seepage systems. https://doi.org/10.18710/LS2KUX . DataverseNO, V2 Limnology and Oceanography : Methods info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Jansson, P., Ferré, B., Silyakova, A., Dølven, K.O. & Omstedt, A. (2019). A new numerical model for understanding free and dissolved gasprogression toward the atmosphere in aquatic methane seepagesystems. Limnology and Oceanography : Methods, 17 (3), 223-239. https://doi.org/10.1002/lom3.10307 FRIDAID 1659134 doi:10.1002/lom3.10307 1541-5856 https://hdl.handle.net/10037/15432 openAccess VDP::Mathematics and natural science: 400::Geosciences: 450::Mineralogy petrology geochemistry: 462 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Mineralogi petrologi geokjemi: 462 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 Journal article Tidsskriftartikkel Peer reviewed 2019 ftunivtroemsoe https://doi.org/10.1002/lom3.10307 2021-06-25T17:56:30Z Source at https://doi.org/10.1002/lom3.10307 . We present a marine two‐phase gas model in one dimension (M2PG1) resolving interaction between the free and dissolved gas phases and the gas propagation toward the atmosphere in aquatic environments. The motivation for the model development was to improve the understanding of benthic methane seepage impact on aquatic environments and its effect on atmospheric greenhouse gas composition. Rising, dissolution, and exsolution of a wide size‐range of bubbles comprising several gas species are modeled simultaneously with the evolution of the aqueous gas concentrations. A model sensitivity analysis elucidates the relative importance of process parameterizations and environmental effects on the gas behavior. The parameterization of transfer velocity across bubble rims has the greatest influence on the resulting gas distribution, and bubble sizes are critical for predicting the fate of emitted bubble gas. High salinity increases the rise height of bubbles; whereas temperature does not significantly alter it. Vertical mixing and aerobic oxidation play insignificant roles in environments where advection is important. The model, applied in an Arctic Ocean methane seepage location, showed good agreement with acoustically derived bubble rise heights and in situ sampled methane concentration profiles. Coupled with numerical ocean circulation and biogeochemical models, M2PG1 could predict the impact of benthic methane emissions on the marine environment and the atmosphere on long time scales and large spatial scales. Because of its flexibility, M2PG1 can be applied in a wide variety of environmental settings and future M2PG1 applications may include gas leakage from seafloor installations and bubble injection by wave action. Article in Journal/Newspaper Arctic Arctic Arctic Ocean University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Limnology and Oceanography: Methods 17 3 223 239 |
institution |
Open Polar |
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University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450::Mineralogy petrology geochemistry: 462 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Mineralogi petrologi geokjemi: 462 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450::Mineralogy petrology geochemistry: 462 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Mineralogi petrologi geokjemi: 462 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 Jansson, Pär Ferré, Benedicte Silyakova, Anna Dølven, Knut Ola Omstedt, Anders A new numerical model for understanding free and dissolved gasprogression toward the atmosphere in aquatic methane seepage systems |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450::Mineralogy petrology geochemistry: 462 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Mineralogi petrologi geokjemi: 462 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 |
description |
Source at https://doi.org/10.1002/lom3.10307 . We present a marine two‐phase gas model in one dimension (M2PG1) resolving interaction between the free and dissolved gas phases and the gas propagation toward the atmosphere in aquatic environments. The motivation for the model development was to improve the understanding of benthic methane seepage impact on aquatic environments and its effect on atmospheric greenhouse gas composition. Rising, dissolution, and exsolution of a wide size‐range of bubbles comprising several gas species are modeled simultaneously with the evolution of the aqueous gas concentrations. A model sensitivity analysis elucidates the relative importance of process parameterizations and environmental effects on the gas behavior. The parameterization of transfer velocity across bubble rims has the greatest influence on the resulting gas distribution, and bubble sizes are critical for predicting the fate of emitted bubble gas. High salinity increases the rise height of bubbles; whereas temperature does not significantly alter it. Vertical mixing and aerobic oxidation play insignificant roles in environments where advection is important. The model, applied in an Arctic Ocean methane seepage location, showed good agreement with acoustically derived bubble rise heights and in situ sampled methane concentration profiles. Coupled with numerical ocean circulation and biogeochemical models, M2PG1 could predict the impact of benthic methane emissions on the marine environment and the atmosphere on long time scales and large spatial scales. Because of its flexibility, M2PG1 can be applied in a wide variety of environmental settings and future M2PG1 applications may include gas leakage from seafloor installations and bubble injection by wave action. |
format |
Article in Journal/Newspaper |
author |
Jansson, Pär Ferré, Benedicte Silyakova, Anna Dølven, Knut Ola Omstedt, Anders |
author_facet |
Jansson, Pär Ferré, Benedicte Silyakova, Anna Dølven, Knut Ola Omstedt, Anders |
author_sort |
Jansson, Pär |
title |
A new numerical model for understanding free and dissolved gasprogression toward the atmosphere in aquatic methane seepage systems |
title_short |
A new numerical model for understanding free and dissolved gasprogression toward the atmosphere in aquatic methane seepage systems |
title_full |
A new numerical model for understanding free and dissolved gasprogression toward the atmosphere in aquatic methane seepage systems |
title_fullStr |
A new numerical model for understanding free and dissolved gasprogression toward the atmosphere in aquatic methane seepage systems |
title_full_unstemmed |
A new numerical model for understanding free and dissolved gasprogression toward the atmosphere in aquatic methane seepage systems |
title_sort |
new numerical model for understanding free and dissolved gasprogression toward the atmosphere in aquatic methane seepage systems |
publisher |
Association for the Sciences of Limnology and Oceanography |
publishDate |
2019 |
url |
https://hdl.handle.net/10037/15432 https://doi.org/10.1002/lom3.10307 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Arctic Ocean |
op_relation |
Jansson, P., Ferre, B., Silyakova, A., Dølven, K.O. & Omstedt, A. (2019). Replication Data for: A new numerical model for understanding free and dissolved gas progression towards the atmosphere in aquatic methane seepage systems. https://doi.org/10.18710/LS2KUX . DataverseNO, V2 Limnology and Oceanography : Methods info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Jansson, P., Ferré, B., Silyakova, A., Dølven, K.O. & Omstedt, A. (2019). A new numerical model for understanding free and dissolved gasprogression toward the atmosphere in aquatic methane seepagesystems. Limnology and Oceanography : Methods, 17 (3), 223-239. https://doi.org/10.1002/lom3.10307 FRIDAID 1659134 doi:10.1002/lom3.10307 1541-5856 https://hdl.handle.net/10037/15432 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1002/lom3.10307 |
container_title |
Limnology and Oceanography: Methods |
container_volume |
17 |
container_issue |
3 |
container_start_page |
223 |
op_container_end_page |
239 |
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1766302091605704704 |