Recent changes in area and thickness of Torngat Mountain glaciers (northern Labrador, Canada)
The Torngat Mountains National Park, northern Labrador, Canada, contains more than 120 small glaciers: the only remaining glaciers in continental northeast North America. These small cirque glaciers exist in a unique topo-climatic setting, experiencing temperate maritime summer conditions yet very c...
Published in: | The Cryosphere |
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2017
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00010523 2023-05-15T15:09:19+02:00 Recent changes in area and thickness of Torngat Mountain glaciers (northern Labrador, Canada) Barrand, Nicholas E. Way, Robert G. Bell, Trevor Sharp, Martin J. 2017-01 electronic https://doi.org/10.5194/tc-11-157-2017 https://noa.gwlb.de/receive/cop_mods_00010523 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010480/tc-11-157-2017.pdf https://tc.copernicus.org/articles/11/157/2017/tc-11-157-2017.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-11-157-2017 https://noa.gwlb.de/receive/cop_mods_00010523 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010480/tc-11-157-2017.pdf https://tc.copernicus.org/articles/11/157/2017/tc-11-157-2017.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2017 ftnonlinearchiv https://doi.org/10.5194/tc-11-157-2017 2022-02-08T22:57:00Z The Torngat Mountains National Park, northern Labrador, Canada, contains more than 120 small glaciers: the only remaining glaciers in continental northeast North America. These small cirque glaciers exist in a unique topo-climatic setting, experiencing temperate maritime summer conditions yet very cold and dry winters, and may provide insights into the deglaciation dynamics of similar small glaciers in temperate mountain settings. Due to their size and remote location, very little information exists regarding the health of these glaciers. Just a single study has been published on the contemporary glaciology of the Torngat Mountains, focusing on net mass balances from 1981 to 1984. This paper addresses the extent to which glaciologically relevant climate variables have changed in northern Labrador in concert with 20th-century Arctic warming, and how these changes have affected Torngat Mountain glaciers. Field surveys and remote-sensing analyses were used to measure regional glacier area loss of 27 % from 1950 to 2005, substantial rates of ice surface thinning (up to 6 m yr−1) and volume losses at Abraham, Hidden, and Minaret glaciers, between 2005 and 2011. Glacier mass balances appear to be controlled by variations in winter precipitation and, increasingly, by strong summer and autumn atmospheric warming since the early 1990s, though further observations are required to fully understand mass balance sensitivities. This study provides the first comprehensive contemporary assessment of Labrador glaciers and will inform both regional impact assessments and syntheses of global glacier mass balance. Article in Journal/Newspaper Arctic glacier* The Cryosphere Torngat Mountains national park Niedersächsisches Online-Archiv NOA Arctic Canada Minaret ENVELOPE(64.800,64.800,-71.300,-71.300) Torngat Mountains ENVELOPE(-63.665,-63.665,59.000,59.000) The Cryosphere 11 1 157 168 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Barrand, Nicholas E. Way, Robert G. Bell, Trevor Sharp, Martin J. Recent changes in area and thickness of Torngat Mountain glaciers (northern Labrador, Canada) |
topic_facet |
article Verlagsveröffentlichung |
description |
The Torngat Mountains National Park, northern Labrador, Canada, contains more than 120 small glaciers: the only remaining glaciers in continental northeast North America. These small cirque glaciers exist in a unique topo-climatic setting, experiencing temperate maritime summer conditions yet very cold and dry winters, and may provide insights into the deglaciation dynamics of similar small glaciers in temperate mountain settings. Due to their size and remote location, very little information exists regarding the health of these glaciers. Just a single study has been published on the contemporary glaciology of the Torngat Mountains, focusing on net mass balances from 1981 to 1984. This paper addresses the extent to which glaciologically relevant climate variables have changed in northern Labrador in concert with 20th-century Arctic warming, and how these changes have affected Torngat Mountain glaciers. Field surveys and remote-sensing analyses were used to measure regional glacier area loss of 27 % from 1950 to 2005, substantial rates of ice surface thinning (up to 6 m yr−1) and volume losses at Abraham, Hidden, and Minaret glaciers, between 2005 and 2011. Glacier mass balances appear to be controlled by variations in winter precipitation and, increasingly, by strong summer and autumn atmospheric warming since the early 1990s, though further observations are required to fully understand mass balance sensitivities. This study provides the first comprehensive contemporary assessment of Labrador glaciers and will inform both regional impact assessments and syntheses of global glacier mass balance. |
format |
Article in Journal/Newspaper |
author |
Barrand, Nicholas E. Way, Robert G. Bell, Trevor Sharp, Martin J. |
author_facet |
Barrand, Nicholas E. Way, Robert G. Bell, Trevor Sharp, Martin J. |
author_sort |
Barrand, Nicholas E. |
title |
Recent changes in area and thickness of Torngat Mountain glaciers (northern Labrador, Canada) |
title_short |
Recent changes in area and thickness of Torngat Mountain glaciers (northern Labrador, Canada) |
title_full |
Recent changes in area and thickness of Torngat Mountain glaciers (northern Labrador, Canada) |
title_fullStr |
Recent changes in area and thickness of Torngat Mountain glaciers (northern Labrador, Canada) |
title_full_unstemmed |
Recent changes in area and thickness of Torngat Mountain glaciers (northern Labrador, Canada) |
title_sort |
recent changes in area and thickness of torngat mountain glaciers (northern labrador, canada) |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/tc-11-157-2017 https://noa.gwlb.de/receive/cop_mods_00010523 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010480/tc-11-157-2017.pdf https://tc.copernicus.org/articles/11/157/2017/tc-11-157-2017.pdf |
long_lat |
ENVELOPE(64.800,64.800,-71.300,-71.300) ENVELOPE(-63.665,-63.665,59.000,59.000) |
geographic |
Arctic Canada Minaret Torngat Mountains |
geographic_facet |
Arctic Canada Minaret Torngat Mountains |
genre |
Arctic glacier* The Cryosphere Torngat Mountains national park |
genre_facet |
Arctic glacier* The Cryosphere Torngat Mountains national park |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-11-157-2017 https://noa.gwlb.de/receive/cop_mods_00010523 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010480/tc-11-157-2017.pdf https://tc.copernicus.org/articles/11/157/2017/tc-11-157-2017.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-11-157-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
1 |
container_start_page |
157 |
op_container_end_page |
168 |
_version_ |
1766340540805152768 |