  In recent years, a vast increase in spectroscopic observations of transiting
exoplanets has for the first time allowed us to search for broad trends in
their atmospheric properties. Analysis of these observations has revealed that,
even for the highly irradiated hot Jupiters, aerosol is a common presence and
must be accounted for in modelling efforts. An additional challenge for hot
Jupiters is the large variation in temperature across the planet, which is
likely to result in partial or patchy cloud cover. As our observational
capability is due to increase further with the launch of the James Webb Space
Telescope, anticipated in autumn 2021, community efforts are underway to
prepare modelling and analysis tools capable of recovering information about
variable and patchy cloud coverage on hot exoplanets
