Factors influencing permafrost temperatures across tree line in the uplands east of the Mackenzie Delta, 2004–2010 1 This article is one of a series of papers published in this CJES Special Issue on the theme of Fundamental and applied research on permafrost in Canada. 2 Polar Continental Shelf Contribution 03611.
Air and near-surface ground temperatures, late-winter snow conditions, and characteristics of the vegetation cover and soil were measured across the forest–tundra transition in the uplands east of the Mackenzie Delta, Northwest Territories, in 2004–2010. Mean late-winter snow depth decreased northwa...
Published in: | Canadian Journal of Earth Sciences |
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Canadian Science Publishing
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crcansciencepubl:10.1139/e2012-002 2024-06-23T07:54:13+00:00 Factors influencing permafrost temperatures across tree line in the uplands east of the Mackenzie Delta, 2004–2010 1 This article is one of a series of papers published in this CJES Special Issue on the theme of Fundamental and applied research on permafrost in Canada. 2 Polar Continental Shelf Contribution 03611. Palmer, M.J. Burn, C.R. Kokelj, S.V. Allard, Michel 2012 http://dx.doi.org/10.1139/e2012-002 http://www.nrcresearchpress.com/doi/full-xml/10.1139/e2012-002 http://www.nrcresearchpress.com/doi/pdf/10.1139/e2012-002 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 49, issue 8, page 877-894 ISSN 0008-4077 1480-3313 journal-article 2012 crcansciencepubl https://doi.org/10.1139/e2012-002 2024-06-06T04:11:18Z Air and near-surface ground temperatures, late-winter snow conditions, and characteristics of the vegetation cover and soil were measured across the forest–tundra transition in the uplands east of the Mackenzie Delta, Northwest Territories, in 2004–2010. Mean late-winter snow depth decreased northward from 73 cm in the subarctic boreal forest near Inuvik to 22 cm in low-shrub tundra. Annual near-surface ground temperatures decreased northward by 0.1–0.3 °C/km near the northern limit of trees, in association with an abrupt change in snow depth. The rate decreased to 0.01–0.06 °C/km in the tundra. The freezing season is twice as long as the thawing season in the region, so measured differences in the regional ground thermal regime were dominated by the contrast in winter surface conditions between forest and tundra. Article in Journal/Newspaper Inuvik Mackenzie Delta Northwest Territories permafrost Subarctic Tundra Canadian Science Publishing Northwest Territories Canada Mackenzie Delta ENVELOPE(-136.672,-136.672,68.833,68.833) Inuvik ENVELOPE(-133.610,-133.610,68.341,68.341) Canadian Journal of Earth Sciences 49 8 877 894 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
Air and near-surface ground temperatures, late-winter snow conditions, and characteristics of the vegetation cover and soil were measured across the forest–tundra transition in the uplands east of the Mackenzie Delta, Northwest Territories, in 2004–2010. Mean late-winter snow depth decreased northward from 73 cm in the subarctic boreal forest near Inuvik to 22 cm in low-shrub tundra. Annual near-surface ground temperatures decreased northward by 0.1–0.3 °C/km near the northern limit of trees, in association with an abrupt change in snow depth. The rate decreased to 0.01–0.06 °C/km in the tundra. The freezing season is twice as long as the thawing season in the region, so measured differences in the regional ground thermal regime were dominated by the contrast in winter surface conditions between forest and tundra. |
author2 |
Allard, Michel |
format |
Article in Journal/Newspaper |
author |
Palmer, M.J. Burn, C.R. Kokelj, S.V. |
spellingShingle |
Palmer, M.J. Burn, C.R. Kokelj, S.V. Factors influencing permafrost temperatures across tree line in the uplands east of the Mackenzie Delta, 2004–2010 1 This article is one of a series of papers published in this CJES Special Issue on the theme of Fundamental and applied research on permafrost in Canada. 2 Polar Continental Shelf Contribution 03611. |
author_facet |
Palmer, M.J. Burn, C.R. Kokelj, S.V. |
author_sort |
Palmer, M.J. |
title |
Factors influencing permafrost temperatures across tree line in the uplands east of the Mackenzie Delta, 2004–2010 1 This article is one of a series of papers published in this CJES Special Issue on the theme of Fundamental and applied research on permafrost in Canada. 2 Polar Continental Shelf Contribution 03611. |
title_short |
Factors influencing permafrost temperatures across tree line in the uplands east of the Mackenzie Delta, 2004–2010 1 This article is one of a series of papers published in this CJES Special Issue on the theme of Fundamental and applied research on permafrost in Canada. 2 Polar Continental Shelf Contribution 03611. |
title_full |
Factors influencing permafrost temperatures across tree line in the uplands east of the Mackenzie Delta, 2004–2010 1 This article is one of a series of papers published in this CJES Special Issue on the theme of Fundamental and applied research on permafrost in Canada. 2 Polar Continental Shelf Contribution 03611. |
title_fullStr |
Factors influencing permafrost temperatures across tree line in the uplands east of the Mackenzie Delta, 2004–2010 1 This article is one of a series of papers published in this CJES Special Issue on the theme of Fundamental and applied research on permafrost in Canada. 2 Polar Continental Shelf Contribution 03611. |
title_full_unstemmed |
Factors influencing permafrost temperatures across tree line in the uplands east of the Mackenzie Delta, 2004–2010 1 This article is one of a series of papers published in this CJES Special Issue on the theme of Fundamental and applied research on permafrost in Canada. 2 Polar Continental Shelf Contribution 03611. |
title_sort |
factors influencing permafrost temperatures across tree line in the uplands east of the mackenzie delta, 2004–2010 1 this article is one of a series of papers published in this cjes special issue on the theme of fundamental and applied research on permafrost in canada. 2 polar continental shelf contribution 03611. |
publisher |
Canadian Science Publishing |
publishDate |
2012 |
url |
http://dx.doi.org/10.1139/e2012-002 http://www.nrcresearchpress.com/doi/full-xml/10.1139/e2012-002 http://www.nrcresearchpress.com/doi/pdf/10.1139/e2012-002 |
long_lat |
ENVELOPE(-136.672,-136.672,68.833,68.833) ENVELOPE(-133.610,-133.610,68.341,68.341) |
geographic |
Northwest Territories Canada Mackenzie Delta Inuvik |
geographic_facet |
Northwest Territories Canada Mackenzie Delta Inuvik |
genre |
Inuvik Mackenzie Delta Northwest Territories permafrost Subarctic Tundra |
genre_facet |
Inuvik Mackenzie Delta Northwest Territories permafrost Subarctic Tundra |
op_source |
Canadian Journal of Earth Sciences volume 49, issue 8, page 877-894 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e2012-002 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
49 |
container_issue |
8 |
container_start_page |
877 |
op_container_end_page |
894 |
_version_ |
1802646281702604800 |