This session invites contributions on recent progress in the
characterisation of exoplanetary climate regimes based on
state-of-the-art theoretical modelling and inspired by observations from
JWST, CHEOPS, TESS, and other facilities. Recent observations of mineral
clouds and disequilibrium chemical tracers, such as SO₂, have provided a
deeper basis for understanding exoplanetary atmospheric processes and
are pushing the boundaries of our theoretical understanding of
exoplanetary climate regimes. The upcoming launch of PLATO, together
with the ongoing preparation of selected targets and the
characterisation of their atmospheric and climate properties, is equally
important for enabling and interpreting future PLATO observations. In
addition, phase-curve observations from CHEOPS and TESS have highlighted
the need to consider magnetically coupled atmospheric dynamics, while
PLATO will soon open another frontier in phase-curve observations.

This session aims to invite recent progress in exoplanet climate
characterisation based on a combination of observation and modelling.
The session focuses on cloud and gas-phase chemistry modelling, the
modelling of magnetic coupling in atmospheres and their observational
counterpart. Contributions from the cross-over studies of solar system
and exoplanet sciences are particularly welcomed.

This session is inspired by the upcoming PLATO launch in early 2027 and
ongoing CHEOPS-PLATO synergies, including atmospheric characterisation
of hot to ultra-hot Jupiters facilitated by optical observations
(secondary eclipse measurements/phasecurves) that are highly
complementary to JWST observations in the infrared. The session will
also discuss atmosphere interpretation activities on incorporating
complex 3D modelling in their data interpretation. This session is further
part of the PLATO WP activities for exoplanet gas giants as well as the
PLATO planetary phase curves working group.