Thermal State of Permafrost (TSP) - a Canadian contribution to the International Permafrost Association's International Polar Year project
Many new ground temperature measurement boreholes have been established, and data were collected at more than 100 monitoring sites. To examine change in the recent past, we are collecting records and assembling databases concerning permafrost sites which had been examined by industrial and governmen...
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ftborealisdata:hdl:10864/10222 2023-05-15T16:34:37+02:00 Thermal State of Permafrost (TSP) - a Canadian contribution to the International Permafrost Association's International Polar Year project Antoni Lewkowicz Chris Burn Delia Berrouard J. Chartrand (GSC) L. Dyke (GSC) M. Ednie (GSC) Norm Carlson Philip Bonnaventure Sharon Smith https://hdl.handle.net/10864/10222 unknown Borealis https://hdl.handle.net/10864/10222 Cryosphere Modeling Climate change Northern Canada Permafrost ftborealisdata 2022-10-10T05:52:35Z Many new ground temperature measurement boreholes have been established, and data were collected at more than 100 monitoring sites. To examine change in the recent past, we are collecting records and assembling databases concerning permafrost sites which had been examined by industrial and government partners during the past two decades. An indication of recent permafrost change was the loss of permafrost at half of the sites that we examined in August 2007 and 2008 along the Alaska Highway east of Whitehorse compared to conditions recorded by one of Canada's first permafrost scientists in 1964. Another finding is that permafrost in the mountains of the Yukon is warmer than we expected based on projections from standard climate stations, all of which are located in the valleys. In the cold, continuous permafrost at Herschel Island in northern Yukon, the ground has warmed by over 3°C in the 20th century, in close response to the warming of climate since 1899-1905. In the Mackenzie delta area, the mean annual ground temperature has increased by about 1.5°C since 1970 at sites in tundra regions, and less in the delta itself. In the delta, the influence of numerous water bodies reduces the impact of climate warming in winter on ground temperatures, as these lakes and channels do not all freeze through. In the uplands near Inuvik, ground temperatures are now sufficiently warm that changes to surface conditions may lead to permafrost degradation. Other/Unknown Material Herschel Herschel Island International Polar Year Inuvik Mackenzie Delta permafrost Tundra Whitehorse Alaska Yukon Borealis Canada Herschel Island ENVELOPE(-139.089,-139.089,69.583,69.583) Inuvik ENVELOPE(-133.610,-133.610,68.341,68.341) Mackenzie Delta ENVELOPE(-136.672,-136.672,68.833,68.833) New Ground ENVELOPE(-55.215,-55.215,49.567,49.567) Yukon |
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Borealis |
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ftborealisdata |
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Cryosphere Modeling Climate change Northern Canada Permafrost |
spellingShingle |
Cryosphere Modeling Climate change Northern Canada Permafrost Antoni Lewkowicz Chris Burn Delia Berrouard J. Chartrand (GSC) L. Dyke (GSC) M. Ednie (GSC) Norm Carlson Philip Bonnaventure Sharon Smith Thermal State of Permafrost (TSP) - a Canadian contribution to the International Permafrost Association's International Polar Year project |
topic_facet |
Cryosphere Modeling Climate change Northern Canada Permafrost |
description |
Many new ground temperature measurement boreholes have been established, and data were collected at more than 100 monitoring sites. To examine change in the recent past, we are collecting records and assembling databases concerning permafrost sites which had been examined by industrial and government partners during the past two decades. An indication of recent permafrost change was the loss of permafrost at half of the sites that we examined in August 2007 and 2008 along the Alaska Highway east of Whitehorse compared to conditions recorded by one of Canada's first permafrost scientists in 1964. Another finding is that permafrost in the mountains of the Yukon is warmer than we expected based on projections from standard climate stations, all of which are located in the valleys. In the cold, continuous permafrost at Herschel Island in northern Yukon, the ground has warmed by over 3°C in the 20th century, in close response to the warming of climate since 1899-1905. In the Mackenzie delta area, the mean annual ground temperature has increased by about 1.5°C since 1970 at sites in tundra regions, and less in the delta itself. In the delta, the influence of numerous water bodies reduces the impact of climate warming in winter on ground temperatures, as these lakes and channels do not all freeze through. In the uplands near Inuvik, ground temperatures are now sufficiently warm that changes to surface conditions may lead to permafrost degradation. |
author |
Antoni Lewkowicz Chris Burn Delia Berrouard J. Chartrand (GSC) L. Dyke (GSC) M. Ednie (GSC) Norm Carlson Philip Bonnaventure Sharon Smith |
author_facet |
Antoni Lewkowicz Chris Burn Delia Berrouard J. Chartrand (GSC) L. Dyke (GSC) M. Ednie (GSC) Norm Carlson Philip Bonnaventure Sharon Smith |
author_sort |
Antoni Lewkowicz |
title |
Thermal State of Permafrost (TSP) - a Canadian contribution to the International Permafrost Association's International Polar Year project |
title_short |
Thermal State of Permafrost (TSP) - a Canadian contribution to the International Permafrost Association's International Polar Year project |
title_full |
Thermal State of Permafrost (TSP) - a Canadian contribution to the International Permafrost Association's International Polar Year project |
title_fullStr |
Thermal State of Permafrost (TSP) - a Canadian contribution to the International Permafrost Association's International Polar Year project |
title_full_unstemmed |
Thermal State of Permafrost (TSP) - a Canadian contribution to the International Permafrost Association's International Polar Year project |
title_sort |
thermal state of permafrost (tsp) - a canadian contribution to the international permafrost association's international polar year project |
publisher |
Borealis |
url |
https://hdl.handle.net/10864/10222 |
long_lat |
ENVELOPE(-139.089,-139.089,69.583,69.583) ENVELOPE(-133.610,-133.610,68.341,68.341) ENVELOPE(-136.672,-136.672,68.833,68.833) ENVELOPE(-55.215,-55.215,49.567,49.567) |
geographic |
Canada Herschel Island Inuvik Mackenzie Delta New Ground Yukon |
geographic_facet |
Canada Herschel Island Inuvik Mackenzie Delta New Ground Yukon |
genre |
Herschel Herschel Island International Polar Year Inuvik Mackenzie Delta permafrost Tundra Whitehorse Alaska Yukon |
genre_facet |
Herschel Herschel Island International Polar Year Inuvik Mackenzie Delta permafrost Tundra Whitehorse Alaska Yukon |
op_relation |
https://hdl.handle.net/10864/10222 |
_version_ |
1766024581943918592 |