Climate change signal in the ocean circulation of the Tyrrhenian Sea

Abstract. The Tyrrhenian Sea plays an important role in the winter deep water formation northwestern Mediterranean through that enters Ligurian via Corsica Channel. Therefore, study of impact changes on future climate circulation and its consequences represents issue. Furthermore, seasonally dependent circulation, which is rich dynamical mesoscale structures, dominated by interplay local basin-wide transport across major straits, adequate representation features modeling challenge. In this work we examine with a regionally coupled atmosphere–ocean model end 21st century under RCP8.5 emission scenario, their driving mechanisms, possible convection NW Mediterranean. Our successfully reproduces main Basin present-day circulation. We find toward cyclonic along-slope stream around becomes weaker. This weakening increases wind transferred to become more intense than at present summer. also that, future, northward Channel towards Liguro-Provençal basin smaller today. Also, flows channel presents stronger stratification because generalized warming freshening upper saltening intermediate waters. Both factors may contribute interruption Gulf Lions century.