Modeling the impediment of methane ebullition bubbles by seasonal lake ice
Microbial methane (CH 4 ) ebullition (bubbling) from anoxic lake sediments comprises a globally significant flux to the atmosphere, but ebullition bubbles in temperate and polar lakes can be trapped by winter ice cover and later released during spring thaw. This "ice-bubble storage" (IBS)...
Published in: | Biogeosciences |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2014
|
Subjects: | |
Online Access: | https://doi.org/10.5194/bg-11-6791-2014 https://doaj.org/article/130987d502d748bba65953e878d298fd |
id |
ftdoajarticles:oai:doaj.org/article:130987d502d748bba65953e878d298fd |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:130987d502d748bba65953e878d298fd 2023-05-15T18:32:58+02:00 Modeling the impediment of methane ebullition bubbles by seasonal lake ice S. Greene K. M. Walter Anthony D. Archer A. Sepulveda-Jauregui K. Martinez-Cruz 2014-12-01T00:00:00Z https://doi.org/10.5194/bg-11-6791-2014 https://doaj.org/article/130987d502d748bba65953e878d298fd EN eng Copernicus Publications http://www.biogeosciences.net/11/6791/2014/bg-11-6791-2014.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-11-6791-2014 https://doaj.org/article/130987d502d748bba65953e878d298fd Biogeosciences, Vol 11, Iss 23, Pp 6791-6811 (2014) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2014 ftdoajarticles https://doi.org/10.5194/bg-11-6791-2014 2022-12-31T09:20:03Z Microbial methane (CH 4 ) ebullition (bubbling) from anoxic lake sediments comprises a globally significant flux to the atmosphere, but ebullition bubbles in temperate and polar lakes can be trapped by winter ice cover and later released during spring thaw. This "ice-bubble storage" (IBS) constitutes a novel mode of CH 4 emission. Before bubbles are encapsulated by downward-growing ice, some of their CH 4 dissolves into the lake water, where it may be subject to oxidation. We present field characterization and a model of the annual CH 4 cycle in Goldstream Lake, a thermokarst (thaw) lake in interior Alaska. We find that summertime ebullition dominates annual CH 4 emissions to the atmosphere. Eighty percent of CH 4 in bubbles trapped by ice dissolves into the lake water column in winter, and about half of that is oxidized. The ice growth rate and the magnitude of the CH 4 ebullition flux are important controlling factors of bubble dissolution. Seven percent of annual ebullition CH 4 is trapped as IBS and later emitted as ice melts. In a future warmer climate, there will likely be less seasonal ice cover, less IBS, less CH 4 dissolution from trapped bubbles, and greater CH 4 emissions from northern lakes. Article in Journal/Newspaper Thermokarst Alaska Directory of Open Access Journals: DOAJ Articles Biogeosciences 11 23 6791 6811 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 S. Greene K. M. Walter Anthony D. Archer A. Sepulveda-Jauregui K. Martinez-Cruz Modeling the impediment of methane ebullition bubbles by seasonal lake ice |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Microbial methane (CH 4 ) ebullition (bubbling) from anoxic lake sediments comprises a globally significant flux to the atmosphere, but ebullition bubbles in temperate and polar lakes can be trapped by winter ice cover and later released during spring thaw. This "ice-bubble storage" (IBS) constitutes a novel mode of CH 4 emission. Before bubbles are encapsulated by downward-growing ice, some of their CH 4 dissolves into the lake water, where it may be subject to oxidation. We present field characterization and a model of the annual CH 4 cycle in Goldstream Lake, a thermokarst (thaw) lake in interior Alaska. We find that summertime ebullition dominates annual CH 4 emissions to the atmosphere. Eighty percent of CH 4 in bubbles trapped by ice dissolves into the lake water column in winter, and about half of that is oxidized. The ice growth rate and the magnitude of the CH 4 ebullition flux are important controlling factors of bubble dissolution. Seven percent of annual ebullition CH 4 is trapped as IBS and later emitted as ice melts. In a future warmer climate, there will likely be less seasonal ice cover, less IBS, less CH 4 dissolution from trapped bubbles, and greater CH 4 emissions from northern lakes. |
format |
Article in Journal/Newspaper |
author |
S. Greene K. M. Walter Anthony D. Archer A. Sepulveda-Jauregui K. Martinez-Cruz |
author_facet |
S. Greene K. M. Walter Anthony D. Archer A. Sepulveda-Jauregui K. Martinez-Cruz |
author_sort |
S. Greene |
title |
Modeling the impediment of methane ebullition bubbles by seasonal lake ice |
title_short |
Modeling the impediment of methane ebullition bubbles by seasonal lake ice |
title_full |
Modeling the impediment of methane ebullition bubbles by seasonal lake ice |
title_fullStr |
Modeling the impediment of methane ebullition bubbles by seasonal lake ice |
title_full_unstemmed |
Modeling the impediment of methane ebullition bubbles by seasonal lake ice |
title_sort |
modeling the impediment of methane ebullition bubbles by seasonal lake ice |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/bg-11-6791-2014 https://doaj.org/article/130987d502d748bba65953e878d298fd |
genre |
Thermokarst Alaska |
genre_facet |
Thermokarst Alaska |
op_source |
Biogeosciences, Vol 11, Iss 23, Pp 6791-6811 (2014) |
op_relation |
http://www.biogeosciences.net/11/6791/2014/bg-11-6791-2014.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-11-6791-2014 https://doaj.org/article/130987d502d748bba65953e878d298fd |
op_doi |
https://doi.org/10.5194/bg-11-6791-2014 |
container_title |
Biogeosciences |
container_volume |
11 |
container_issue |
23 |
container_start_page |
6791 |
op_container_end_page |
6811 |
_version_ |
1766217190318538752 |