Warming permafrost and active layer variability at Cime Bianche, Western European Alps
The objective of this paper is to provide a first synthesis on the state and recent evolution of permafrost at the monitoring site of Cime Bianche (3100 m a.s.l.) on the Italian side of the Western Alps. The analysis is based on 7 years of ground temperature observations in two boreholes and seven s...
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Copernicus Publications
2015
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00012032 2023-05-15T13:03:02+02:00 Warming permafrost and active layer variability at Cime Bianche, Western European Alps Pogliotti, P. Guglielmin, M. Cremonese, E. Morra di Cella, U. Filippa, G. Pellet, C. Hauck, C. 2015-04 electronic https://doi.org/10.5194/tc-9-647-2015 https://noa.gwlb.de/receive/cop_mods_00012032 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011989/tc-9-647-2015.pdf https://tc.copernicus.org/articles/9/647/2015/tc-9-647-2015.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-9-647-2015 https://noa.gwlb.de/receive/cop_mods_00012032 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011989/tc-9-647-2015.pdf https://tc.copernicus.org/articles/9/647/2015/tc-9-647-2015.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2015 ftnonlinearchiv https://doi.org/10.5194/tc-9-647-2015 2022-02-08T22:56:15Z The objective of this paper is to provide a first synthesis on the state and recent evolution of permafrost at the monitoring site of Cime Bianche (3100 m a.s.l.) on the Italian side of the Western Alps. The analysis is based on 7 years of ground temperature observations in two boreholes and seven surface points. The analysis aims to quantify the spatial and temporal variability of ground surface temperature in relation to snow cover, the small-scale spatial variability of the active layer thickness and current temperature trends in deep permafrost. Results show that the heterogeneity of snow cover thickness, both in space and time, is the main factor controlling ground surface temperatures and leads to a mean range of spatial variability (2.5 ± 0.1 °C) which far exceeds the mean range of observed inter-annual variability (1.6 ± 0.1 °C). The active layer thickness measured in two boreholes at a distance of 30 m shows a mean difference of 2.0 ± 0.1 m with the active layer of one borehole consistently deeper. As revealed by temperature analysis and geophysical soundings, such a difference is mainly driven by the ice/water content in the sub-surface and not by the snow cover regimes. The analysis of deep temperature time series reveals that permafrost is warming. The detected trends are statistically significant starting from a depth below 8 m with warming rates between 0.1 and 0.01 °C yr−1. Article in Journal/Newspaper Active layer thickness Ice permafrost The Cryosphere Niedersächsisches Online-Archiv NOA The Cryosphere 9 2 647 661 |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Pogliotti, P. Guglielmin, M. Cremonese, E. Morra di Cella, U. Filippa, G. Pellet, C. Hauck, C. Warming permafrost and active layer variability at Cime Bianche, Western European Alps |
topic_facet |
article Verlagsveröffentlichung |
description |
The objective of this paper is to provide a first synthesis on the state and recent evolution of permafrost at the monitoring site of Cime Bianche (3100 m a.s.l.) on the Italian side of the Western Alps. The analysis is based on 7 years of ground temperature observations in two boreholes and seven surface points. The analysis aims to quantify the spatial and temporal variability of ground surface temperature in relation to snow cover, the small-scale spatial variability of the active layer thickness and current temperature trends in deep permafrost. Results show that the heterogeneity of snow cover thickness, both in space and time, is the main factor controlling ground surface temperatures and leads to a mean range of spatial variability (2.5 ± 0.1 °C) which far exceeds the mean range of observed inter-annual variability (1.6 ± 0.1 °C). The active layer thickness measured in two boreholes at a distance of 30 m shows a mean difference of 2.0 ± 0.1 m with the active layer of one borehole consistently deeper. As revealed by temperature analysis and geophysical soundings, such a difference is mainly driven by the ice/water content in the sub-surface and not by the snow cover regimes. The analysis of deep temperature time series reveals that permafrost is warming. The detected trends are statistically significant starting from a depth below 8 m with warming rates between 0.1 and 0.01 °C yr−1. |
format |
Article in Journal/Newspaper |
author |
Pogliotti, P. Guglielmin, M. Cremonese, E. Morra di Cella, U. Filippa, G. Pellet, C. Hauck, C. |
author_facet |
Pogliotti, P. Guglielmin, M. Cremonese, E. Morra di Cella, U. Filippa, G. Pellet, C. Hauck, C. |
author_sort |
Pogliotti, P. |
title |
Warming permafrost and active layer variability at Cime Bianche, Western European Alps |
title_short |
Warming permafrost and active layer variability at Cime Bianche, Western European Alps |
title_full |
Warming permafrost and active layer variability at Cime Bianche, Western European Alps |
title_fullStr |
Warming permafrost and active layer variability at Cime Bianche, Western European Alps |
title_full_unstemmed |
Warming permafrost and active layer variability at Cime Bianche, Western European Alps |
title_sort |
warming permafrost and active layer variability at cime bianche, western european alps |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/tc-9-647-2015 https://noa.gwlb.de/receive/cop_mods_00012032 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011989/tc-9-647-2015.pdf https://tc.copernicus.org/articles/9/647/2015/tc-9-647-2015.pdf |
genre |
Active layer thickness Ice permafrost The Cryosphere |
genre_facet |
Active layer thickness Ice permafrost The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-9-647-2015 https://noa.gwlb.de/receive/cop_mods_00012032 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011989/tc-9-647-2015.pdf https://tc.copernicus.org/articles/9/647/2015/tc-9-647-2015.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-9-647-2015 |
container_title |
The Cryosphere |
container_volume |
9 |
container_issue |
2 |
container_start_page |
647 |
op_container_end_page |
661 |
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1766326943140020224 |