Prediction of Ice-Free Conditions for a Perennially Ice-Covered Antarctic Lake
©2019. American Geophysical Union. All Rights Reserved. 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. Hea...
Published in: | Journal of Geophysical Research: Earth Surface |
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ftlouisianastuir:oai:digitalcommons.lsu.edu:geo_pubs-1584 2023-06-11T04:04:40+02:00 Prediction of Ice-Free Conditions for a Perennially Ice-Covered Antarctic Lake Obryk, M. K. Doran, P. T. Priscu, J. C. 2019-02-01T08:00:00Z application/pdf https://digitalcommons.lsu.edu/geo_pubs/585 https://doi.org/10.1029/2018JF004756 https://digitalcommons.lsu.edu/context/geo_pubs/article/1584/viewcontent/585.pdf unknown LSU Digital Commons https://digitalcommons.lsu.edu/geo_pubs/585 doi:10.1029/2018JF004756 https://digitalcommons.lsu.edu/context/geo_pubs/article/1584/viewcontent/585.pdf Faculty Publications Antarctica cryosphere lake ice limnology McMurdo Dry Valleys text 2019 ftlouisianastuir https://doi.org/10.1029/2018JF004756 2023-05-28T18:25:11Z ©2019. American Geophysical Union. All Rights Reserved. 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. Text Antarc* Antarctic Antarctica McMurdo Dry Valleys LSU Digital Commons (Louisiana State University) Antarctic McMurdo Dry Valleys 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 |
LSU Digital Commons (Louisiana State University) |
op_collection_id |
ftlouisianastuir |
language |
unknown |
topic |
Antarctica cryosphere lake ice limnology McMurdo Dry Valleys |
spellingShingle |
Antarctica cryosphere lake ice limnology McMurdo Dry Valleys Obryk, M. K. Doran, P. T. Priscu, J. C. Prediction of Ice-Free Conditions for a Perennially Ice-Covered Antarctic Lake |
topic_facet |
Antarctica cryosphere lake ice limnology McMurdo Dry Valleys |
description |
©2019. American Geophysical Union. All Rights Reserved. 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 |
Text |
author |
Obryk, M. K. Doran, P. T. Priscu, J. C. |
author_facet |
Obryk, M. K. Doran, P. T. Priscu, J. C. |
author_sort |
Obryk, M. 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 |
publisher |
LSU Digital Commons |
publishDate |
2019 |
url |
https://digitalcommons.lsu.edu/geo_pubs/585 https://doi.org/10.1029/2018JF004756 https://digitalcommons.lsu.edu/context/geo_pubs/article/1584/viewcontent/585.pdf |
long_lat |
ENVELOPE(162.417,162.417,-77.717,-77.717) ENVELOPE(-25.588,-25.588,-80.361,-80.361) |
geographic |
Antarctic McMurdo Dry Valleys Bonney Lake Bonney |
geographic_facet |
Antarctic McMurdo Dry Valleys Bonney Lake Bonney |
genre |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
op_source |
Faculty Publications |
op_relation |
https://digitalcommons.lsu.edu/geo_pubs/585 doi:10.1029/2018JF004756 https://digitalcommons.lsu.edu/context/geo_pubs/article/1584/viewcontent/585.pdf |
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 |
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1768389580924387328 |