Integrate natural risks and their consequences in relation to climate change into land-use planning
Natural hazards study requires the implementation of a global and multidisciplinary approach mobilising a wide range of expertise such as urban planning, hydrometeorology or hydrology and hydraulics. It is generally based on the correlation of a hazard (intensity and probability of occurrence) with the vulnerability of exposed areas (populations, habitat, economic activities, etc.).
Resilience to climate change, as for natural hazards, is based on :
Mitigation i.e. reducing, through natural processes or technological means, the quantity of greenhouse gases in the atmosphere.
Adaptation, i.e. reducing both risks and impacts of the adverse effects of climate change (storms, floods, drought, etc.).
Mitigation is a medium- and long-term policy, while adaptation is an immediate necessity.
In the case of flood risk management, resilience is based on :
Mitigation aiming to lower the risk of flooding by reducing either the hazard (through structural measures) or the vulnerability of exposed areas (through the implementation of structural or non-structural measures).
Adaptation: because regardless of the degree of protection, an event of lower probability will always occur. Adaptation therefore aims to deploy measures that ensure effective early warning and crisis management, as well as the most efficient possible return to normal.
Our approach to climate change and natural risks is based on:
Mobilisation of strong technical expertise (expert knowledge of the underlying phenomena) which enables us to quantify climate change into physical impacts (increase in extreme rainfall and flooding, increase in drought episodes, intensification of cyclones, marine submersion, etc.).
Study of the impacts on exposed populations and activities (expertise in urban planning and urban sociology).