Effects of Mackenzie River Discharge and Bathymetry on Sea Ice in the Beaufort Sea
Mackenzie River discharge and bathymetry effects on sea ice in the Beaufort Sea are examined in 2012 when Arctic sea ice extent hit a record low. Satellite-derived sea surface temperature revealed warmer waters closer to river mouths. By 5 July 2012, Mackenzie warm waters occupied most of an open wa...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20140013006 2023-05-15T13:33:56+02:00 Effects of Mackenzie River Discharge and Bathymetry on Sea Ice in the Beaufort Sea Hall, D. K. Neumann, G. Nghiem, S. V. Li, P. Rigor, I. G Unclassified, Unlimited, Publicly available February 16, 2014 application/pdf http://hdl.handle.net/2060/20140013006 unknown Document ID: 20140013006 http://hdl.handle.net/2060/20140013006 Copyright, Distribution as joint owner in the copyright CASI Geosciences (General) GSFC-E-DAA-TN12639 Geophysical Research Letters; 41; 3; 873-879 2014 ftnasantrs 2019-07-21T00:23:36Z Mackenzie River discharge and bathymetry effects on sea ice in the Beaufort Sea are examined in 2012 when Arctic sea ice extent hit a record low. Satellite-derived sea surface temperature revealed warmer waters closer to river mouths. By 5 July 2012, Mackenzie warm waters occupied most of an open water area about 316,000 sq km. Surface temperature in a common open water area increased by 6.5 C between 14 June and 5 July 2012, before and after the river waters broke through a recurrent landfast ice barrier formed over the shallow seafloor offshore the Mackenzie Delta. In 2012, melting by warm river waters was especially effective when the strong Beaufort Gyre fragmented sea ice into unconsolidated floes. The Mackenzie and other large rivers can transport an enormous amount of heat across immense continental watersheds into the Arctic Ocean, constituting a stark contrast to the Antarctic that has no such rivers to affect sea ice. Other/Unknown Material Antarc* Antarctic Arctic Arctic Ocean Beaufort Sea Mackenzie Delta Mackenzie river Sea ice NASA Technical Reports Server (NTRS) Antarctic Arctic Arctic Ocean Mackenzie Delta ENVELOPE(-136.672,-136.672,68.833,68.833) Mackenzie River The Antarctic |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Geosciences (General) |
spellingShingle |
Geosciences (General) Hall, D. K. Neumann, G. Nghiem, S. V. Li, P. Rigor, I. G Effects of Mackenzie River Discharge and Bathymetry on Sea Ice in the Beaufort Sea |
topic_facet |
Geosciences (General) |
description |
Mackenzie River discharge and bathymetry effects on sea ice in the Beaufort Sea are examined in 2012 when Arctic sea ice extent hit a record low. Satellite-derived sea surface temperature revealed warmer waters closer to river mouths. By 5 July 2012, Mackenzie warm waters occupied most of an open water area about 316,000 sq km. Surface temperature in a common open water area increased by 6.5 C between 14 June and 5 July 2012, before and after the river waters broke through a recurrent landfast ice barrier formed over the shallow seafloor offshore the Mackenzie Delta. In 2012, melting by warm river waters was especially effective when the strong Beaufort Gyre fragmented sea ice into unconsolidated floes. The Mackenzie and other large rivers can transport an enormous amount of heat across immense continental watersheds into the Arctic Ocean, constituting a stark contrast to the Antarctic that has no such rivers to affect sea ice. |
format |
Other/Unknown Material |
author |
Hall, D. K. Neumann, G. Nghiem, S. V. Li, P. Rigor, I. G |
author_facet |
Hall, D. K. Neumann, G. Nghiem, S. V. Li, P. Rigor, I. G |
author_sort |
Hall, D. K. |
title |
Effects of Mackenzie River Discharge and Bathymetry on Sea Ice in the Beaufort Sea |
title_short |
Effects of Mackenzie River Discharge and Bathymetry on Sea Ice in the Beaufort Sea |
title_full |
Effects of Mackenzie River Discharge and Bathymetry on Sea Ice in the Beaufort Sea |
title_fullStr |
Effects of Mackenzie River Discharge and Bathymetry on Sea Ice in the Beaufort Sea |
title_full_unstemmed |
Effects of Mackenzie River Discharge and Bathymetry on Sea Ice in the Beaufort Sea |
title_sort |
effects of mackenzie river discharge and bathymetry on sea ice in the beaufort sea |
publishDate |
2014 |
url |
http://hdl.handle.net/2060/20140013006 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(-136.672,-136.672,68.833,68.833) |
geographic |
Antarctic Arctic Arctic Ocean Mackenzie Delta Mackenzie River The Antarctic |
geographic_facet |
Antarctic Arctic Arctic Ocean Mackenzie Delta Mackenzie River The Antarctic |
genre |
Antarc* Antarctic Arctic Arctic Ocean Beaufort Sea Mackenzie Delta Mackenzie river Sea ice |
genre_facet |
Antarc* Antarctic Arctic Arctic Ocean Beaufort Sea Mackenzie Delta Mackenzie river Sea ice |
op_source |
CASI |
op_relation |
Document ID: 20140013006 http://hdl.handle.net/2060/20140013006 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766047215936077824 |