easyCHEM documentation

Welcome to the esayCHEM documentation. easyCHEM is a Python package for atmospheric equilibrium chemistry. It is a clone of the equilibrium chemistry part of NASA’s CEA code, written from scratch and with numerical stability in mind. In particular, the code implements the equations described in Gordon & McBride (1994).

To get started with some examples on how to run easyCHEM immediately, see “Getting started”. Otherwise read on for some more general info.

easyCHEM is available under the MIT License, and its base implementation is desribed in Mollière et al. (2017).

This documentation webpage contains an installation guide, a tutorial, and an API documentation.

Developers

• Elise Lei and Paul Mollière

Guide:

• Installation
  • Installation via pip install
  • Compiling easyCHEM from source
  • Instructions for Apple silicon
• Quickstart demonstration for how to use the easychem package
  • Calculating equilibrium abundances at single pressure-temperature point:
  • Calculating equilibrium abundances for a whole atmospheric P-T structure:
  • Changing metallicity
  • Changing C/O
  • Varying atmospheric abundances freely
  • Ancillary outputs
  • Condensates: a word on stability
• API Reference
  • easychem