Active layer thickness and ground temperatures during 1991-2008 at permafrost sites in northern North America
A snapshot of the thermal state of permafrost in northern North America during the International Polar Year (IPY) was developed using ground temperature data collected from 350 boreholes. More than half these were established during IPY to enhance the network in sparsely monitored regions. The measu...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.837173 2023-05-15T13:03:10+02:00 Active layer thickness and ground temperatures during 1991-2008 at permafrost sites in northern North America Smith, S L Romanovsky, Vladimir E Lewkowicz, Antoni G Burn, C R Allard, Maël Clow, Gary D Yoshikawa, Kenji Throop, J MEDIAN LATITUDE: 63.079000 * MEDIAN LONGITUDE: -98.392500 * SOUTH-BOUND LATITUDE: 56.550000 * WEST-BOUND LONGITUDE: -134.900000 * NORTH-BOUND LATITUDE: 69.700000 * EAST-BOUND LONGITUDE: -65.990000 2010-10-23 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.837173 https://doi.org/10.1594/PANGAEA.837173 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.837173 https://doi.org/10.1594/PANGAEA.837173 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Smith, S L; Romanovsky, Vladimir E; Lewkowicz, Antoni G; Burn, C R; Allard, Maël; Clow, Gary D; Yoshikawa, Kenji; Throop, J (2010): Thermal state of permafrost in North America: a contribution to the international polar year. Permafrost and Periglacial Processes, 21(2), 117-135, https://doi.org/10.1002/ppp.690 International Polar Year (2007-2008) IPY Dataset 2010 ftpangaea https://doi.org/10.1594/PANGAEA.837173 https://doi.org/10.1002/ppp.690 2023-01-20T07:33:21Z A snapshot of the thermal state of permafrost in northern North America during the International Polar Year (IPY) was developed using ground temperature data collected from 350 boreholes. More than half these were established during IPY to enhance the network in sparsely monitored regions. The measurement sites span a diverse range of ecoclimatic and geological conditions across the continent and are at various elevations within the Cordillera. The ground temperatures within the discontinuous permafrost zone are generally above -3°C, and range down to - 15°C in the continuous zone. Ground temperature envelopes vary according to substrate, with shallow depths of zero annual amplitude for peat and mineral soils, and much greater depths for bedrock. New monitoring sites in the mountains of southern and central Yukon suggest that permafrost may be limited in extent. In concert with regional air temperatures, permafrost has generally been warming across North America for the past several decades, as indicated by measurements from the western Arctic since the 1970s and from parts of eastern Canada since the early 1990s. The rates of ground warming have been variable, but are generally greater north of the treeline. Latent heat effects in the southern discontinuous zone dominate the permafrost thermal regime close to 0°C and allow permafrost to persist under a warming climate. Consequently, the spatial diversity of permafrost thermal conditions is decreasing over time. Dataset Active layer thickness Arctic International Polar Year IPY permafrost Permafrost and Periglacial Processes Yukon PANGAEA - Data Publisher for Earth & Environmental Science Arctic Yukon Canada ENVELOPE(-134.900000,-65.990000,69.700000,56.550000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
International Polar Year (2007-2008) IPY |
spellingShingle |
International Polar Year (2007-2008) IPY Smith, S L Romanovsky, Vladimir E Lewkowicz, Antoni G Burn, C R Allard, Maël Clow, Gary D Yoshikawa, Kenji Throop, J Active layer thickness and ground temperatures during 1991-2008 at permafrost sites in northern North America |
topic_facet |
International Polar Year (2007-2008) IPY |
description |
A snapshot of the thermal state of permafrost in northern North America during the International Polar Year (IPY) was developed using ground temperature data collected from 350 boreholes. More than half these were established during IPY to enhance the network in sparsely monitored regions. The measurement sites span a diverse range of ecoclimatic and geological conditions across the continent and are at various elevations within the Cordillera. The ground temperatures within the discontinuous permafrost zone are generally above -3°C, and range down to - 15°C in the continuous zone. Ground temperature envelopes vary according to substrate, with shallow depths of zero annual amplitude for peat and mineral soils, and much greater depths for bedrock. New monitoring sites in the mountains of southern and central Yukon suggest that permafrost may be limited in extent. In concert with regional air temperatures, permafrost has generally been warming across North America for the past several decades, as indicated by measurements from the western Arctic since the 1970s and from parts of eastern Canada since the early 1990s. The rates of ground warming have been variable, but are generally greater north of the treeline. Latent heat effects in the southern discontinuous zone dominate the permafrost thermal regime close to 0°C and allow permafrost to persist under a warming climate. Consequently, the spatial diversity of permafrost thermal conditions is decreasing over time. |
format |
Dataset |
author |
Smith, S L Romanovsky, Vladimir E Lewkowicz, Antoni G Burn, C R Allard, Maël Clow, Gary D Yoshikawa, Kenji Throop, J |
author_facet |
Smith, S L Romanovsky, Vladimir E Lewkowicz, Antoni G Burn, C R Allard, Maël Clow, Gary D Yoshikawa, Kenji Throop, J |
author_sort |
Smith, S L |
title |
Active layer thickness and ground temperatures during 1991-2008 at permafrost sites in northern North America |
title_short |
Active layer thickness and ground temperatures during 1991-2008 at permafrost sites in northern North America |
title_full |
Active layer thickness and ground temperatures during 1991-2008 at permafrost sites in northern North America |
title_fullStr |
Active layer thickness and ground temperatures during 1991-2008 at permafrost sites in northern North America |
title_full_unstemmed |
Active layer thickness and ground temperatures during 1991-2008 at permafrost sites in northern North America |
title_sort |
active layer thickness and ground temperatures during 1991-2008 at permafrost sites in northern north america |
publisher |
PANGAEA |
publishDate |
2010 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.837173 https://doi.org/10.1594/PANGAEA.837173 |
op_coverage |
MEDIAN LATITUDE: 63.079000 * MEDIAN LONGITUDE: -98.392500 * SOUTH-BOUND LATITUDE: 56.550000 * WEST-BOUND LONGITUDE: -134.900000 * NORTH-BOUND LATITUDE: 69.700000 * EAST-BOUND LONGITUDE: -65.990000 |
long_lat |
ENVELOPE(-134.900000,-65.990000,69.700000,56.550000) |
geographic |
Arctic Yukon Canada |
geographic_facet |
Arctic Yukon Canada |
genre |
Active layer thickness Arctic International Polar Year IPY permafrost Permafrost and Periglacial Processes Yukon |
genre_facet |
Active layer thickness Arctic International Polar Year IPY permafrost Permafrost and Periglacial Processes Yukon |
op_source |
Supplement to: Smith, S L; Romanovsky, Vladimir E; Lewkowicz, Antoni G; Burn, C R; Allard, Maël; Clow, Gary D; Yoshikawa, Kenji; Throop, J (2010): Thermal state of permafrost in North America: a contribution to the international polar year. Permafrost and Periglacial Processes, 21(2), 117-135, https://doi.org/10.1002/ppp.690 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.837173 https://doi.org/10.1594/PANGAEA.837173 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.837173 https://doi.org/10.1002/ppp.690 |
_version_ |
1766329960297922560 |