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The Thermal State of Permafrost in the Nordic Area during the International Polar Year 2007-2009

Christiansen, H. H.; Etzelmuller, B.; Isaksen, K.; Juliussen, H.; Farbrot, H.; Humlum, O.; Johansson, Margareta LU ; Ingeman-Nielsen, T.; Kristensen, L. and Hjort, J., et al. (2010) In Permafrost and Periglacial Processes 21(2). p.156-181
Abstract
This paper provides a snapshot of the permafrost thermal state in the Nordic area obtained during the International Polar Year (IPY) 2007-2009. Several intensive research campaigns were undertaken within a variety of projects in the Nordic countries to obtain this snapshot. We demonstrate for Scandinavia that both lowland permafrost in palsas and peat plateaus, and large areas of permafrost in the mountains are at temperatures close to 0 degrees C, which makes them sensitive to climatic changes. In Svalbard and northeast Greenland, and also in the highest parts of the mountains in the rest of the Nordic area, the permafrost is somewhat colder, but still only a few degrees below the freezing point. The observations presented from the... (More)
This paper provides a snapshot of the permafrost thermal state in the Nordic area obtained during the International Polar Year (IPY) 2007-2009. Several intensive research campaigns were undertaken within a variety of projects in the Nordic countries to obtain this snapshot. We demonstrate for Scandinavia that both lowland permafrost in palsas and peat plateaus, and large areas of permafrost in the mountains are at temperatures close to 0 degrees C, which makes them sensitive to climatic changes. In Svalbard and northeast Greenland, and also in the highest parts of the mountains in the rest of the Nordic area, the permafrost is somewhat colder, but still only a few degrees below the freezing point. The observations presented from the network of boreholes, more than half of which were established during the IPY, provide an important baseline to assess how future predicted climatic changes may affect the permafrost thermal state in the Nordic area. Time series of active-layer thickness and permafrost temperature conditions in the Nordic area, which are generally only 10 years in length, show generally increasing active-layer depths and risings permafrost temperatures. Copyright (C) 2010 John Wiley & Sons, Ltd. (Less)
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publication status
published
subject
keywords
air, International Polar Year, ground temperature, permafrost, Nordic, active layer, temperature
in
Permafrost and Periglacial Processes
volume
21
issue
2
pages
156 - 181
publisher
John Wiley & Sons
external identifiers
  • wos:000279755300005
  • scopus:77955170780
ISSN
1099-1530
DOI
10.1002/ppp.687
language
English
LU publication?
yes
id
30d04463-59e5-4ea5-ae40-feb40758a933 (old id 1657349)
date added to LUP
2010-08-25 11:52:29
date last changed
2018-07-08 03:06:22
@article{30d04463-59e5-4ea5-ae40-feb40758a933,
  abstract     = {This paper provides a snapshot of the permafrost thermal state in the Nordic area obtained during the International Polar Year (IPY) 2007-2009. Several intensive research campaigns were undertaken within a variety of projects in the Nordic countries to obtain this snapshot. We demonstrate for Scandinavia that both lowland permafrost in palsas and peat plateaus, and large areas of permafrost in the mountains are at temperatures close to 0 degrees C, which makes them sensitive to climatic changes. In Svalbard and northeast Greenland, and also in the highest parts of the mountains in the rest of the Nordic area, the permafrost is somewhat colder, but still only a few degrees below the freezing point. The observations presented from the network of boreholes, more than half of which were established during the IPY, provide an important baseline to assess how future predicted climatic changes may affect the permafrost thermal state in the Nordic area. Time series of active-layer thickness and permafrost temperature conditions in the Nordic area, which are generally only 10 years in length, show generally increasing active-layer depths and risings permafrost temperatures. Copyright (C) 2010 John Wiley & Sons, Ltd.},
  author       = {Christiansen, H. H. and Etzelmuller, B. and Isaksen, K. and Juliussen, H. and Farbrot, H. and Humlum, O. and Johansson, Margareta and Ingeman-Nielsen, T. and Kristensen, L. and Hjort, J. and Holmlund, P. and Sannel, A. B. K. and Sigsgaard, C. and Åkerman, Jonas and Foged, N. and Blikra, L. H. and Pernosky, M. A. and Odegard, R. S.},
  issn         = {1099-1530},
  keyword      = {air,International Polar Year,ground temperature,permafrost,Nordic,active layer,temperature},
  language     = {eng},
  number       = {2},
  pages        = {156--181},
  publisher    = {John Wiley & Sons},
  series       = {Permafrost and Periglacial Processes},
  title        = {The Thermal State of Permafrost in the Nordic Area during the International Polar Year 2007-2009},
  url          = {http://dx.doi.org/10.1002/ppp.687},
  volume       = {21},
  year         = {2010},
}