ATMO – Model

ATMO is a 1D-2D atmospheric code for the study of the atmosphere of brown dwarfs and exoplanets. The code has originally been developed at the University of Exeter ( and is currently a collaboration between different groups across the globe. A unique feature of this code is the possibility to explore multi-dimensional (2D) steady states of the equatorial flows around the planet. This ability allows for the characterization of the deep long time-scale circulation that can lead to inflated giant planets, and  the characterization of phase curves that will be observed with future space telescopes (e.g. JWST and ARIEL). 

The main modules and associated developers are:

  • – 1D and 2D newton solver: P. Tremblin
  • – Radiative transfer: D. Amundsen, P. Tremblin
  • – Opacities: D. Amundsen, M. Phillips, R. Ridgway, J. Goyal
  • – Equilibrium chemistry: P. Tremblin, B. Drummond, J. Goyal
  • – Condensation and rainouts: P. Tremblin, J. Goyal
  • – Out-of-equilibrium chemistry: O. Venot, E. Hebrard, B. Drummond
  • – Convection: P. Tremblin, M. Phillips
  • – Retrieval: D. Sing