Chempath is an open-source pathway analysis program that automatically builds the most important reaction chains (pathways) of a reaction system and quantifies the importance of these pathways to the production and destruction of a species of interest. This algorithm can enhance the understanding of complex reaction systems, identifying the main pathways that produce a concentration change. The algorithm was originally developed by Lehmann (2004). Chempath is a Python re-implementation of this algorithm. https://doi.org/10.5194/gmd-18-4433-2025

This web application allows to explore the results presented in: Garduno et. al (2023), Climate shapes the oxygenation of Earth's atmosphere across the Great Oxidation Event, EPSL. https://doi.org/10.1016/j.epsl.2023.118071