Title The thermal state of permafrost in the nordic area during the International Polar Year 2007-2009
Author Christiansen, H.H.; Etzelmüller, B.; Isaksen, K.; Juliussen, H.; Farbrot, H.; Humlum, O.; Johansson, M.; Ingeman-Nielsen, T.; Kristensen, L.; Hjort, J.; Holmlund, P.; Sannel, A.B.K.; Sigsgaard, C.; Akerman, H.J.; Foged, N.; Blikra, L.H.; Pernosky, M.A.; Odegard, R.S.
Author Affil Christiansen, H.H., University Centre in Svalbard, Geology Department, Longyearbyen, Svalbard and Jan Mayen Islands. Other: University of Oslo, Norway; Norwegian Meteorological Institute, Norway; Lund University, Sweden; Technical University of Denmark, Denmark; University of Helsinki, Finland; Stockholm University, Sweden; University of Copenhagen, Denmark; International Centre for Geohazards, Norway; Asiaq/Greenland Survey, Greenland; Gjovik University College, Norway
Source The International Polar Year, edited by A.G. Lewkowicz. Permafrost and Periglacial Processes, 21(2), p.156-181, . Publisher: Wiley, Oxford, United Kingdom. ISSN: 1045- 6740
Publication Date Jun. 2010
Notes In English. 69 refs. CRREL Acc. No: 65001981
Index Terms active layer; boreholes; permafrost; soils; soil temperature; subpolar regions; temperature; thermal regime; Faeroe Islands; Finland; Greenland; Iceland; Norway; Arctic region--Svalbard; Sweden; Arctic region; Atlantic Ocean Islands; Europe; International Polar Year 2007-08; IPY 2007-08 Research Publications; Scandinavia; spatial distribution; subarctic regions; Svalbard; Western Europe
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. Abstract Copyright (2010), Wiley Periodicals, Inc.
URL http://hdl.handle.net/10.1002/ppp.687
Publication Type journal article
Record ID 304401