With the support of the Auvergne-Rhône-Alpes Region and the Interreg project PEACE_Alps, the Regional Agency for Energy and the Environment, ARAEE on a regional scale and the AGEDEN Association on a departmental scale (outside Grenoble) have proposed a collective support to communities wishing to better know the vulnerability of their territory to the effects of climate change and to develop an adaptation strategy.
Four territories were chosen in Isère for a close support by AGEDEN: Local authorities of Oisans, Matheysine, Pays Roussillonnais and the Regional Nature Park of Chartreuse.
At the regional level
The ARAEE regional agency (that operates in the rest of the region) pays particular attention to territories with important agricultural or tourist stakes and has selected five other territories: Arles-Isère Agglomeration Communities, Communities of Municipalities of Pays d'Evian, Pays Mornantais, Cluses-Arve and Montagnes and the Regional Nature Park of the Volcanoes of Auvergne.
A personalized and complete support
The objectives set out in the programme are to enable communities to:
-> Know the principles of climate change and organize the identification of
its effects on the territory (pre-diagnosis)
-> Strengthen the transversal adaptation of community policies and actions and
to this end identify the key elements for the implementation of an
operational adaptation strategy
-> Consider possible first actions, such as:
- definition of the main impact indicators, establishment of a network of observers, ...
- raising awareness / training of services in relation to the actors of the territory most concerned
- identification of operational actions in the short and medium term: improvement of summer comfort, preservation of water resources, natural spaces ...
The project will take place in autumn 2017 and will begin with a first inter-territorial meeting on September 28th. Two other inter-territorial meetings will follow in November and December.
At department level, seven distinct territories are identified on which the stakes of adaptation to climate change differ.
- The region of Vienne: rise of the Mediterranean influence in its future climate in a very urbanized plain under Lyon influence.
- The upper Rhone dauphinois: very urbanized zone impacted by the Lyon agglomeration, but where the Mediterranean climate influence is less strong than in the region of Vienna. Adaptation issues: population growth, preservation of natural heritage and adaptation of agriculture.
- Center Dauphiné: agricultural and water resources issues.
- Chartreuse and Vercors: higher temperature increases than in the plain, a strong challenge around livestock and a reconversion to be envisaged for the tourist economy based on skiing; temperatures are comparatively milder than in the plains.
- The Grésivaudan plain (both north and south) particularly the agglomeration of Grenoble: alertness to the phenomena of heat islands and issues related to air quality: already present. These concerns should be accentuated with climate change.
- The Trièves: a special situation = Mediterranean influences will be more present in this territory of middle mountain: particularly affected by droughts and fire risk
- The valleys and the high mountains of the Oisans: sharp rise in temperatures but should not be as much affected by climate change as the pre-alps due to the higher altitudes (less snow problem) and the low population density. The impacts of climate change in Oisans will affect the whole department, or even further: for example, warming will undoubtedly have significant impacts on the entire downstream hydrological system.
Thus, according to a global approach, it can be stated that for the particular case of mountain territories (more than the rest of the territory) there will be a higher temperature increase which will lead to a reduction of snow cover which could question the winter tourist economy on average mountain.