Atmospheric agents and spatial planning. Case study of the Municipality of Rosignano Marittimo in Tuscany

In recent years, the municipality of Rosignano Marittimo in Tuscany has been repeatedly affected by more and more intense weather phenomena, which have caused damage to people and urban settlements along the coast. Extreme weather events such as intense downpours, floods, whirlwinds and powerful sea storms, together with critical issues due to ongoing coastal erosion, highlight a number of problems. The Council administration has recently participated in the ADAPT European project, a Program of transborder cooperation between Interregional Maritime Italy and France - 2014 - 2020, aimed at defining a local Climatic Profile and a Plan of Adaptation to Climatic changes. At the same time, the editing staff of the municipal structural plan has started a method investigation in coherence with the regional Tuscan law no. 65/2014 on the governance of the territory, with the scope of finding answers to some of the critical issues investigated. However, the topic of climatic change expresses deep profiles of uncertainty, due to potential long term climatic response times, as compared to possible actions to be taken today. The evolutionary framework of the coastal belt produces a dynamic definition of a coastline to which the continuous delimitation even of areas of maritime state property assets, correlates in the making. Therefore, the dynamism of the coastline immersed in uncertain flows of atmospheric agents raises a fundamental question to the delimitation of state property areas, on which the political decision maker is called upon to express himself through a territorial planning setup. The physical definition of the coastal system and the management definition of same are topics that are treated in the present paper, that sets the goal of defining a possible methodological approach through the presentation of the case study for territorial planning in coastal areas, able to define a flexible cognitive framework, by means of which to distinguish strategies in the short and long term, for planning and managing of maritime state property assets.