TauREx 2D: Modelling 2D effects in retrievals

New-generation spectrographs dedicated to the study of exoplanetary atmospheres, require a higher precision in the atmospheric

models to better interpret the new spectra. Thanks to future space missions like JWST, ARIEL and Twinkle, indeed, the observed

spectra will be precise enough to reveal features which cannot be modeled with a one-dimensional plane parallel atmosphere,

especially in the case of Ultra Hot Jupiters. Bayesian frameworks are computationally intensive and prevent us from using complete

three-dimensional self-consistent models to retrieve an exoplanetary atmosphere, and, they constrain us to use simplified models to

converge to a set of atmospheric parameters. We propose the TauREx2D retrieval code, which uses two-dimensional atmospheric

models as a good compromise between computational power and model precision to better infer exoplanetary atmospheres. Finally,

we apply such a model on synthetic spectrum computed from a GCM simulation of WASP121b and show the parameters retrieved by

the new TauREx 2D retrieval code.