The thermal state of permafrost in the nordic area during the international polar year 2007-2009

Hanne Hvidtfeldt Christiansen; B. Etzelmuller; Ketil Isaksen; Juliussen, H; Farbrot, H.; Ole Humlum; Johannson, M; Thomas  Ingeman-Nielsen; J Kristensen; Hjort, J.; P. Holmlund; Sannel, A.B. K.; Charlotte Sigsgaard; H.J Åkerman; Niels Foged; Lars Harald Blikra; Pernosky, M.; Ødegaard, R.S.

The thermal state of permafrost in the nordic area during the international polar year 2007-2009

Hanne Hvidtfeldt Christiansen, B. Etzelmuller, Ketil Isaksen, Juliussen, H, Farbrot, H., Ole Humlum, Johannson, M, Thomas Ingeman-Nielsen, J Kristensen, Hjort, J., P. Holmlund, Sannel, A.B. K., Charlotte Sigsgaard, H.J Åkerman, Niels Foged, Lars Harald Blikra, Pernosky, M., Ødegaard, R.S.

Geography

200 Citations (Scopus)

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°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 rising permafrost temperatures.

Original language	English
Journal	Permafrost and Periglacial Processes
Issue number	21
Pages (from-to)	156-181
ISSN	1045-6740
Publication status	Published - Apr 2010

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Christiansen, H. H., Etzelmuller, B., Isaksen, K., H, J., H., F., Humlum, O., M, J., Ingeman-Nielsen, T., Kristensen, J., J., H., Holmlund, P., A.B. K., S., Sigsgaard, C., Åkerman, H. J., Foged, N., Blikra, L. H., M., P., & R.S., Ø. (2010). The thermal state of permafrost in the nordic area during the international polar year 2007-2009. Permafrost and Periglacial Processes, (21), 156-181.

Christiansen, HH, Etzelmuller, B, Isaksen, K, H, J, H., F, Humlum, O, M, J, Ingeman-Nielsen, T, Kristensen, J, J., H, Holmlund, P, A.B. K., S, Sigsgaard, C, Åkerman, HJ, Foged, N, Blikra, LH, M., P & R.S., Ø 2010, 'The thermal state of permafrost in the nordic area during the international polar year 2007-2009', Permafrost and Periglacial Processes, no. 21, pp. 156-181.

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title = "The thermal state of permafrost in the nordic area during the international polar year 2007-2009",

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°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 rising permafrost temperatures.",

author = "Christiansen, {Hanne Hvidtfeldt} and B. Etzelmuller and Ketil Isaksen and Juliussen, H and Farbrot, H. and Ole Humlum and Johannson, M and Thomas Ingeman-Nielsen and J Kristensen and Hjort, J. and P. Holmlund and {A.B. K.}, Sannel, and Charlotte Sigsgaard and H.J {\AA}kerman and Niels Foged and Blikra, {Lars Harald} and Pernosky, M. and {\O}degaard, R.S.",

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AU - Christiansen, Hanne Hvidtfeldt

AU - Etzelmuller, B.

AU - Isaksen, Ketil

AU - H, Juliussen,

AU - H., Farbrot,

AU - Humlum, Ole

AU - M, Johannson,

AU - Ingeman-Nielsen, Thomas

AU - Kristensen, J

AU - J., Hjort,

AU - Holmlund, P.

AU - A.B. K., Sannel,

AU - Sigsgaard, Charlotte

AU - Åkerman, H.J

AU - Foged, Niels

AU - Blikra, Lars Harald

AU - M., Pernosky,

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N2 - 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°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 rising permafrost temperatures.

AB - 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°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 rising permafrost temperatures.

M3 - Journal article

SN - 1045-6740

SP - 156

EP - 181

JO - Permafrost and Periglacial Processes

JF - Permafrost and Periglacial Processes

IS - 21

ER -

The thermal state of permafrost in the nordic area during the international polar year 2007-2009

Abstract

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