Mountain permafrost
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Rationale
Justification for indicator selection
Permafrost is permanently frozen ground and consists of rock or soil that has remained at or below 0 °C continuously for more than two years. Mountain permafrost is the dominating permafrost in Europe, because Arctic permafrost is found in Europe only in the northernmost parts of Scandinavia. Permafrost is abundant at high elevations in mid-latitude mountains, where the annual mean temperature is below - 3 °C. It contains variable amounts of ice and exists in different forms: in steep bedrock, in rock glaciers, in debris deposited by glaciers and in vegetated soil. Because vegetation and circulating groundwater in mountain permafrost areas are mostly absent, the temperature in the deeper rock material is largely determined by the temperature history at its surface. Mountain permafrost therefore contains valuable information on climate change. Temperature profiles from alpine boreholes are difficult to interpret in terms of past trends due to the effects of the complex topography (Figure 1) and the availability of insulating snow-cover (Gruber et al., 2004a). Nevertheless, monitoring of temperature change at depth provides valuable data on the thermal response of permafrost to climate change.Permafrost influences the evolution of mountain landscapes and affects human infrastructure and safety. Permafrost warming or thaw affects the potential for natural hazards, such as rock falls (e.g. at the Matterhorn in summer 2003) and debris flows (Noetzli et al., 2003; Gruber and Haeberli, 2007). At least four large events involving rock volumes of more than 1 million m3 have occurred in the Alps during the past decade. Their effects on infrastructure have motivated the development of technical solutions to improve design lifetime and safety (Philips et al., 2007).
Scientific references
- No rationale references available
Indicator definition
- Temperature measured in different boreholes in mountain permafrost in Switzerland 1987-2007
Units
Policy context and targets
Context description
In April 2009 the European Commission presented a White Paper on the framework for adaptation policies and measures to reduce the European Union's vulnerability to the impacts of climate change. The aim is to increase the resilience to climate change of health, property and the productive functions of land, inter alia by improving the management of water resources and ecosystems. More knowledge is needed on climate impact and vulnerability but a considerable amount of information and research already exists which can be shared better through a proposed Clearing House Mechanism. The White Paper stresses the need to mainstream adaptation into existing and new EU policies. A number of Member States have already taken action and several have prepared national adaptation plans. The EU is also developing actions to enhance and finance adaptation in developing countries as part of a new post-2012 global climate agreement expected in Copenhagen (Dec. 2009). For more information see: http://ec.europa.eu/environment/climat/adaptation/index_en.htm
Targets
No targets have been specified
Related policy documents
No related policy documents have been specified
Methodology
Methodology for indicator calculation
Methodology for gap filling
http://www.eea.europa.eu/publications/eea_report_2008_4/pp193-207CC2008_ch8_Data_gaps.pdf
Methodology references
No methodology references available.
Data specifications
EEA data references
- No datasets have been specified here.
External data references
Data sources in latest figures
Uncertainties
Methodology uncertainty
http://www.eea.europa.eu/publications/eea_report_2008_4/pp193-207CC2008_ch8_Data_gaps.pdf
Data sets uncertainty
http://www.eea.europa.eu/publications/eea_report_2008_4/pp193-207CC2008_ch8_Data_gaps.pdf
Rationale uncertainty
No uncertainty has been specified
Further work
Short term work
Work specified here requires to be completed within 1 year from now.
Long term work
Work specified here will require more than 1 year (from now) to be completed.
General metadata
Responsibility and ownership
EEA Contact Info
Hans-Martin FüsselOwnership
Identification
Classification
DPSIR: ImpactTypology: Descriptive indicator (Type A - What is happening to the environment and to humans?)
Permalinks
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For references, please go to https://www.eea.europa.eu/data-and-maps/indicators/mountain-permafrost or scan the QR code.
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