Graham Lee

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Graham Lee

Postdoctoral Researcher - Bernoulli Fellow

I am a postdoctoral researcher working in the exoplanet planetary dynamics and climate group at AOPP. I also have significant links to the Center for Space and Habitability (CSH) group in Bern, Switzerland through the Bernoulli fellowship:
http://www.csh.unibe.ch/index_eng.html

I research the formation of cloud structures in exoplanet and Brown Dwarf atmospheres, in particular:
- What are the chemical formation mechanisms for cloud formation in exoplanet atmospheres?
- What are the microphysical processes responsible for shaping the local and global distribution of global cloud structures?
- What are the key cloud condensation nuclei (CCN) species for exoplanet cloud formation?

I make use of Global Circulation Models (GCMs) of exoplanet atmospheres, coupled with cloud formation models to explore the global cloud structures these worlds may exhibit.

I am also interested in the 3D radiative-transfer effects of cloud particles and the 3D radiative environment of exoplanet atmospheres. I am developing a 3D Monte Carlo radiative-transfer code which aims to model photon processes with high accuracy, from post-processing transmission/emission spectra to photo-chemical haze and photo-ionisation modelling. The attached gif shows an RGB approximation of one of my GCM models, processed using the Mote Carlo code.