The PIMA ADAPTA COSTAS IB project, developed between 2018 and 2020 by IMEDEA-CSIC, UIB and SOCIB, aimed to provide the scientific basis for the development of the Balearic Islands Strategies for Adaptation of coastal areas in front of climate change effects, particularly, sea-level ris e ad extreme wave conditions.

During the project, and following the recommendations of the IPCC, an ad-hoc methodology was developed to evaluate the hazards and impacts in the coastal area based in three modules: numerical modelling of coastal inundation, spatial impacts of inundation over inhabitants, critical infrastructures, natural areas and the socio-economic system, and, response of the subsystems and economic loss (Luque et al., 2021).

Potential risk events are related to two time frames, 2050 and 2100, considering two climate change scenarios of the IPCC, the RCP-4.5 and RCP-8.5, that represent a low reduction of green-house gas emissions pathway and a current emission pathway respectively. Modeling the impacts of the sea-level rise projections in these RCP nd time fremes wave developed in a regional framework, by means f numerical models and unidimensional approximation of wave propagation processes. The results of the regional approach are accessible at https://apps.caib.es/sites/costespelcanvi/ca/informe_de_/ (Catalan) and through a map viewer at https://www.caib.es/sites/costespelcanvi/ca/mapes/ (Catalan).

The development of the ONA toolbox is framed by the Addenda of the agreement between the Balearic Islands Energy Transition, Productive Sectors and Democracy Memory Council and the Balearic Islands Coastal Observing and Forecasting System (ICTS SOCIB). The Addenda aims to provide to local authorities a tool as a support system to develop local strategies of adaptation in front of climate change effects in the coastal area.