Bibliographic Details
| Title: |
Rapid warming and degradation of mountain permafrost in Norway and Iceland. |
| Authors: |
Etzelmüller, Bernd1 (AUTHOR) bernd.etzelmuller@geo.uio.no, Isaksen, Ketil2 (AUTHOR), Czekirda, Justyna1 (AUTHOR), Westermann, Sebastian1 (AUTHOR), Hilbich, Christin3 (AUTHOR), Hauck, Christian3 (AUTHOR) |
| Superior Title: |
Cryosphere. 2023, Vol. 17 Issue 12, p5477-5497. 21p. |
| Subject Terms: |
*PERMAFROST, *EARTH temperature, *CLIMATE change, *SNOW accumulation, *ATMOSPHERIC temperature, *BOREHOLES, *MOUNTAIN soils |
| Geographic Terms: |
ICELAND, NORWAY |
| Abstract: |
With the EU-funded PACE (Permafrost and Climate in Europe) project at the turn of this century, several deep boreholes (100 m +) were drilled in European mountain sites, including in mainland Norway, Svalbard and Sweden. During other projects from 2004 and the International Polar Year (IPY) period in 2006–2007, several additional boreholes were drilled in different sites in both Norway and Iceland, measuring temperatures along both altitudinal and latitudinal gradients. At most sites, multi-temporal geophysical soundings are available using electrical resistivity tomography (ERT). Here, we study the development of permafrost and ground temperatures in mainland Norway and Iceland based on these data sets. We document that permafrost in Norway and Iceland is warming at a high rate, including the development of taliks in both Norway and Iceland in response to global climate change during the last 20 years. At most sites, ground surface temperature (GST) is apparently increasing more strongly than surface air temperature (SAT). Changing snow conditions appear to be the most important factor for the higher GST rates. Modelling exercises also indicate that the talik development can be explained by both higher air temperatures and increasing snow depth. [ABSTRACT FROM AUTHOR] |
|
Copyright of Cryosphere is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| Database: |
Academic Search Premier |
