OpenSCM Two Layer Model: A Python implementation of the two-layer climate model

OpenSCM two layer model contains implementations of the two layer radiative forcing driven models by `Held et al. <https://journals.ametsoc.org/doi/full/10.1175/2009JCLI3466.1>`_, `Geoffroy et al. <https://journals.ametsoc.org/doi/pdf/10.1175/JCLI-D-12-00195.1>`_ and `Bloch-Johnson et al. <https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1002/2015GL064240>`_

OpenSCM Two Layer Model was designed to provide a clean, modularised, extensible interface for one of the most commonly used simple climate models.
It was used in `Phase 1 of the Reduced Complexity Model Intercomparison Project <https://doi.org/10.5194/gmd-13-5175-2020>`_ as a point of comparison for the other participating models.