Prediction of Ice-Free Conditions for a Perennially Ice-Covered Antarctic Lake
Although perennially ice‐covered Antarctic lakes have experienced variable ice thicknesses over the past several decades, future ice thickness trends and associated aquatic biological responses under projected global warming remain unknown. Heat stored in the water column in chemically stratified An...
Published in: | Journal of Geophysical Research: Earth Surface |
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Online Access: | https://scholarworks.montana.edu/xmlui/handle/1/15638 |
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ftmontanastateu:oai:scholarworks.montana.edu:1/15638 2023-05-15T13:54:59+02:00 Prediction of Ice-Free Conditions for a Perennially Ice-Covered Antarctic Lake Obryk, Maciej K. Doran, Peter T. Priscu, John C. 2019-02 application/pdf https://scholarworks.montana.edu/xmlui/handle/1/15638 unknown Obryk, M. K., P. T. Doran, and J. C. Priscu. “Prediction of Ice‐Free Conditions for a Perennially Ice‐Covered Antarctic Lake.” Journal of Geophysical Research: Earth Surface 124, no. 2 (February 2019): 686–694. doi:10.1029/2018jf004756. 2169-9003 https://scholarworks.montana.edu/xmlui/handle/1/15638 This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). http://rightsstatements.org/vocab/InC/1.0/ Article 2019 ftmontanastateu https://doi.org/10.1029/2018jf004756 2022-06-06T07:28:19Z Although perennially ice‐covered Antarctic lakes have experienced variable ice thicknesses over the past several decades, future ice thickness trends and associated aquatic biological responses under projected global warming remain unknown. Heat stored in the water column in chemically stratified Antarctic lakes that have middepth temperature maxima can significantly influence the ice thickness trends via upward heat flux to the ice/water interface. We modeled the ice thickness of the west lobe of Lake Bonney, Antarctica, based on possible future climate scenarios utilizing a 1D thermodynamic model that accounts for surface radiative fluxes as well as the heat flux associated with the temperature evolution of the water column. Model results predict that the ice cover of Lake Bonney will shift from perennial to seasonal within one to four decades, a change that will drastically influence ecosystem processes within the lake. Article in Journal/Newspaper Antarc* Antarctic Antarctica Montana State University (MSU): ScholarWorks Antarctic Bonney ENVELOPE(162.417,162.417,-77.717,-77.717) Lake Bonney ENVELOPE(-25.588,-25.588,-80.361,-80.361) Journal of Geophysical Research: Earth Surface 124 2 686 694 |
institution |
Open Polar |
collection |
Montana State University (MSU): ScholarWorks |
op_collection_id |
ftmontanastateu |
language |
unknown |
description |
Although perennially ice‐covered Antarctic lakes have experienced variable ice thicknesses over the past several decades, future ice thickness trends and associated aquatic biological responses under projected global warming remain unknown. Heat stored in the water column in chemically stratified Antarctic lakes that have middepth temperature maxima can significantly influence the ice thickness trends via upward heat flux to the ice/water interface. We modeled the ice thickness of the west lobe of Lake Bonney, Antarctica, based on possible future climate scenarios utilizing a 1D thermodynamic model that accounts for surface radiative fluxes as well as the heat flux associated with the temperature evolution of the water column. Model results predict that the ice cover of Lake Bonney will shift from perennial to seasonal within one to four decades, a change that will drastically influence ecosystem processes within the lake. |
format |
Article in Journal/Newspaper |
author |
Obryk, Maciej K. Doran, Peter T. Priscu, John C. |
spellingShingle |
Obryk, Maciej K. Doran, Peter T. Priscu, John C. Prediction of Ice-Free Conditions for a Perennially Ice-Covered Antarctic Lake |
author_facet |
Obryk, Maciej K. Doran, Peter T. Priscu, John C. |
author_sort |
Obryk, Maciej K. |
title |
Prediction of Ice-Free Conditions for a Perennially Ice-Covered Antarctic Lake |
title_short |
Prediction of Ice-Free Conditions for a Perennially Ice-Covered Antarctic Lake |
title_full |
Prediction of Ice-Free Conditions for a Perennially Ice-Covered Antarctic Lake |
title_fullStr |
Prediction of Ice-Free Conditions for a Perennially Ice-Covered Antarctic Lake |
title_full_unstemmed |
Prediction of Ice-Free Conditions for a Perennially Ice-Covered Antarctic Lake |
title_sort |
prediction of ice-free conditions for a perennially ice-covered antarctic lake |
publishDate |
2019 |
url |
https://scholarworks.montana.edu/xmlui/handle/1/15638 |
long_lat |
ENVELOPE(162.417,162.417,-77.717,-77.717) ENVELOPE(-25.588,-25.588,-80.361,-80.361) |
geographic |
Antarctic Bonney Lake Bonney |
geographic_facet |
Antarctic Bonney Lake Bonney |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
Obryk, M. K., P. T. Doran, and J. C. Priscu. “Prediction of Ice‐Free Conditions for a Perennially Ice‐Covered Antarctic Lake.” Journal of Geophysical Research: Earth Surface 124, no. 2 (February 2019): 686–694. doi:10.1029/2018jf004756. 2169-9003 https://scholarworks.montana.edu/xmlui/handle/1/15638 |
op_rights |
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). http://rightsstatements.org/vocab/InC/1.0/ |
op_doi |
https://doi.org/10.1029/2018jf004756 |
container_title |
Journal of Geophysical Research: Earth Surface |
container_volume |
124 |
container_issue |
2 |
container_start_page |
686 |
op_container_end_page |
694 |
_version_ |
1766261203266437120 |