Subaqueous melting of Store Glacier, west Greenland from three-dimensional, high-resolution numerical modeling and ocean observations
We present three-dimensional, high-resolution simulations of ice melting at the calving face of Store Glacier, a tidewater glacier in West Greenland, using the Massachusetts Institute of Technology general circulation model. We compare the simulated ice melt with an estimate derived from oceanograph...
Published in: | Geophysical Research Letters |
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Language: | English |
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ftcdlib:qt3gs55782 2023-05-15T16:20:59+02:00 Subaqueous melting of Store Glacier, west Greenland from three-dimensional, high-resolution numerical modeling and ocean observations Xu, Y Rignot, E Fenty, I Menemenlis, D Flexas, MM 4648 - 4653 2013-09-09 application/pdf http://www.escholarship.org/uc/item/3gs55782 english eng eScholarship, University of California qt3gs55782 http://www.escholarship.org/uc/item/3gs55782 Attribution (CC BY): http://creativecommons.org/licenses/by/3.0/ CC-BY Xu, Y; Rignot, E; Fenty, I; Menemenlis, D; & Flexas, MM. (2013). Subaqueous melting of Store Glacier, west Greenland from three-dimensional, high-resolution numerical modeling and ocean observations. Geophysical Research Letters, 40(17), 4648 - 4653. doi:10.1002/grl.50825. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/3gs55782 article 2013 ftcdlib https://doi.org/10.1002/grl.50825 2018-10-19T22:51:45Z We present three-dimensional, high-resolution simulations of ice melting at the calving face of Store Glacier, a tidewater glacier in West Greenland, using the Massachusetts Institute of Technology general circulation model. We compare the simulated ice melt with an estimate derived from oceanographic data. The simulations show turbulent upwelling and spreading of the freshwater-laden plume along the ice face and the vigorous melting of ice at rates of meters per day. The simulated August 2010 melt rate of 2.0±0.3 m/d is within uncertainties of the melt rate of 3.0±1.0 m/d calculated from oceanographic data. Melting is greatest at depth, above the subglacial channels, causing glacier undercutting. Melt rates increase proportionally to thermal forcing raised to the power of 1.2-1.6 and to subglacial water flux raised to the power of 0.5-0.9. Therefore, in a warmer climate, Store Glacier melting by ocean may increase from both increased ocean temperature and subglacial discharge. Key Points Simulated melt agrees with estimates from a hydrographic survey of the glacier. With more runoff, glaciers will melt faster at constant ocean temperature. ©2013. American Geophysical Union. All Rights Reserved. Article in Journal/Newspaper glacier Greenland Tidewater University of California: eScholarship Greenland Geophysical Research Letters 40 17 4648 4653 |
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Open Polar |
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University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
English |
description |
We present three-dimensional, high-resolution simulations of ice melting at the calving face of Store Glacier, a tidewater glacier in West Greenland, using the Massachusetts Institute of Technology general circulation model. We compare the simulated ice melt with an estimate derived from oceanographic data. The simulations show turbulent upwelling and spreading of the freshwater-laden plume along the ice face and the vigorous melting of ice at rates of meters per day. The simulated August 2010 melt rate of 2.0±0.3 m/d is within uncertainties of the melt rate of 3.0±1.0 m/d calculated from oceanographic data. Melting is greatest at depth, above the subglacial channels, causing glacier undercutting. Melt rates increase proportionally to thermal forcing raised to the power of 1.2-1.6 and to subglacial water flux raised to the power of 0.5-0.9. Therefore, in a warmer climate, Store Glacier melting by ocean may increase from both increased ocean temperature and subglacial discharge. Key Points Simulated melt agrees with estimates from a hydrographic survey of the glacier. With more runoff, glaciers will melt faster at constant ocean temperature. ©2013. American Geophysical Union. All Rights Reserved. |
format |
Article in Journal/Newspaper |
author |
Xu, Y Rignot, E Fenty, I Menemenlis, D Flexas, MM |
spellingShingle |
Xu, Y Rignot, E Fenty, I Menemenlis, D Flexas, MM Subaqueous melting of Store Glacier, west Greenland from three-dimensional, high-resolution numerical modeling and ocean observations |
author_facet |
Xu, Y Rignot, E Fenty, I Menemenlis, D Flexas, MM |
author_sort |
Xu, Y |
title |
Subaqueous melting of Store Glacier, west Greenland from three-dimensional, high-resolution numerical modeling and ocean observations |
title_short |
Subaqueous melting of Store Glacier, west Greenland from three-dimensional, high-resolution numerical modeling and ocean observations |
title_full |
Subaqueous melting of Store Glacier, west Greenland from three-dimensional, high-resolution numerical modeling and ocean observations |
title_fullStr |
Subaqueous melting of Store Glacier, west Greenland from three-dimensional, high-resolution numerical modeling and ocean observations |
title_full_unstemmed |
Subaqueous melting of Store Glacier, west Greenland from three-dimensional, high-resolution numerical modeling and ocean observations |
title_sort |
subaqueous melting of store glacier, west greenland from three-dimensional, high-resolution numerical modeling and ocean observations |
publisher |
eScholarship, University of California |
publishDate |
2013 |
url |
http://www.escholarship.org/uc/item/3gs55782 |
op_coverage |
4648 - 4653 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Tidewater |
genre_facet |
glacier Greenland Tidewater |
op_source |
Xu, Y; Rignot, E; Fenty, I; Menemenlis, D; & Flexas, MM. (2013). Subaqueous melting of Store Glacier, west Greenland from three-dimensional, high-resolution numerical modeling and ocean observations. Geophysical Research Letters, 40(17), 4648 - 4653. doi:10.1002/grl.50825. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/3gs55782 |
op_relation |
qt3gs55782 http://www.escholarship.org/uc/item/3gs55782 |
op_rights |
Attribution (CC BY): http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/grl.50825 |
container_title |
Geophysical Research Letters |
container_volume |
40 |
container_issue |
17 |
container_start_page |
4648 |
op_container_end_page |
4653 |
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1766008990104289280 |