Dynamical Landscape and Multistability of a Climate Model

by Valerio Lucarini (University of Reading, UK)

Wednesday 31 Mar 2021, 14:30 → 16:00 Europe/Rome

We study the multistability of the Earth’s climate using a
numerical model forced by stochastic fluctuations of the solar
irradiance. In the weak-noise limit, large deviation laws define the
invariant measure, the statistics of escape times from the competing basins
of attraction, and the instantons. The system lives in the dynamical
landscape defined by the Graham's quasipotential, whose properties are
reconstructed using both a suite of simulations and manifold learning from
a single long trajectory.  We draw a link between macroscopic properties of
the climate such the ocean heat transport and of the hydrological cycle and
the topography of the dynamical landscape.

Link per il collegamento: https://meet.google.com/pip-kvzt-fkz