Modeling of ocean-induced ice melt rates of five west Greenland glaciers over the past two decades
High-resolution, three-dimensional simulations from the Massachusetts Institute of Technology general circulation model ocean model are used to calculate the subaqueous melt rate of the calving faces of Umiamako, Rinks, Kangerdlugssup, Store, and Kangilerngata glaciers, west Greenland, from 1992 to...
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ftcdlib:oai:escholarship.org/ark:/13030/qt4fs187gh 2023-05-15T16:21:22+02:00 Modeling of ocean-induced ice melt rates of five west Greenland glaciers over the past two decades Rignot, E Xu, Y Menemenlis, D Mouginot, J Scheuchl, B Li, X Morlighem, M Seroussi, H van den Broeke, M Fenty, I Cai, C An, L de Fleurian, B 6374 - 6382 2016-01-01 application/pdf https://escholarship.org/uc/item/4fs187gh unknown eScholarship, University of California qt4fs187gh https://escholarship.org/uc/item/4fs187gh public Geophysical Research Letters, vol 43, iss 12 Meteorology & Atmospheric Sciences article 2016 ftcdlib 2021-05-30T17:54:37Z High-resolution, three-dimensional simulations from the Massachusetts Institute of Technology general circulation model ocean model are used to calculate the subaqueous melt rate of the calving faces of Umiamako, Rinks, Kangerdlugssup, Store, and Kangilerngata glaciers, west Greenland, from 1992 to 2015. Model forcing is from monthly reconstructions of ocean state and ice sheet runoff. Results are analyzed in combination with observations of bathymetry, bed elevation, ice front retreat, and glacier speed. We calculate that subaqueous melt rates are 2–3 times larger in summer compared to winter and doubled in magnitude since the 1990s due to enhanced subglacial runoff and 1.6 ± 0.3°C warmer ocean temperature. Umiamako and Kangilerngata retreated rapidly in the 2000s when subaqueous melt rates exceeded the calving rates and ice front retreated to deeper bed elevation. In contrast, Store, Kangerdlugssup, and Rinks have remained stable because their subaqueous melt rates are 3–4 times lower than their calving rates, i.e., the glaciers are dominated by calving processes. Article in Journal/Newspaper glacier Greenland Ice Sheet University of California: eScholarship Greenland |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Meteorology & Atmospheric Sciences |
spellingShingle |
Meteorology & Atmospheric Sciences Rignot, E Xu, Y Menemenlis, D Mouginot, J Scheuchl, B Li, X Morlighem, M Seroussi, H van den Broeke, M Fenty, I Cai, C An, L de Fleurian, B Modeling of ocean-induced ice melt rates of five west Greenland glaciers over the past two decades |
topic_facet |
Meteorology & Atmospheric Sciences |
description |
High-resolution, three-dimensional simulations from the Massachusetts Institute of Technology general circulation model ocean model are used to calculate the subaqueous melt rate of the calving faces of Umiamako, Rinks, Kangerdlugssup, Store, and Kangilerngata glaciers, west Greenland, from 1992 to 2015. Model forcing is from monthly reconstructions of ocean state and ice sheet runoff. Results are analyzed in combination with observations of bathymetry, bed elevation, ice front retreat, and glacier speed. We calculate that subaqueous melt rates are 2–3 times larger in summer compared to winter and doubled in magnitude since the 1990s due to enhanced subglacial runoff and 1.6 ± 0.3°C warmer ocean temperature. Umiamako and Kangilerngata retreated rapidly in the 2000s when subaqueous melt rates exceeded the calving rates and ice front retreated to deeper bed elevation. In contrast, Store, Kangerdlugssup, and Rinks have remained stable because their subaqueous melt rates are 3–4 times lower than their calving rates, i.e., the glaciers are dominated by calving processes. |
format |
Article in Journal/Newspaper |
author |
Rignot, E Xu, Y Menemenlis, D Mouginot, J Scheuchl, B Li, X Morlighem, M Seroussi, H van den Broeke, M Fenty, I Cai, C An, L de Fleurian, B |
author_facet |
Rignot, E Xu, Y Menemenlis, D Mouginot, J Scheuchl, B Li, X Morlighem, M Seroussi, H van den Broeke, M Fenty, I Cai, C An, L de Fleurian, B |
author_sort |
Rignot, E |
title |
Modeling of ocean-induced ice melt rates of five west Greenland glaciers over the past two decades |
title_short |
Modeling of ocean-induced ice melt rates of five west Greenland glaciers over the past two decades |
title_full |
Modeling of ocean-induced ice melt rates of five west Greenland glaciers over the past two decades |
title_fullStr |
Modeling of ocean-induced ice melt rates of five west Greenland glaciers over the past two decades |
title_full_unstemmed |
Modeling of ocean-induced ice melt rates of five west Greenland glaciers over the past two decades |
title_sort |
modeling of ocean-induced ice melt rates of five west greenland glaciers over the past two decades |
publisher |
eScholarship, University of California |
publishDate |
2016 |
url |
https://escholarship.org/uc/item/4fs187gh |
op_coverage |
6374 - 6382 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Ice Sheet |
genre_facet |
glacier Greenland Ice Sheet |
op_source |
Geophysical Research Letters, vol 43, iss 12 |
op_relation |
qt4fs187gh https://escholarship.org/uc/item/4fs187gh |
op_rights |
public |
_version_ |
1766009373674438656 |