Thetis ###### Website: https://thetisproject.org Thetis is a Python-based unstructured mesh discontinuous Galerkin coastal ocean model built upon `Firedrake `__. I was part of the Thetis core developer team during my time as a PhD student and postdoc at `Imperial College London `__. Major contribution ^^^^^^^^^^^^^^^^^^ Development of capability for PDE-constrained optimisation and inversion tools for Thetis. Project information """"""""""""""""""" This work was done as part of my postdoc at `Imperial College London `__, which was funded by an `ARCHER2 eCSE `__ grant from `EPCC `__. This work also received support from a grant from `HPC Europa `__ for me to visit Tuomas Kärnä at the `Finnish Meteorological Institute `__. Resources """"""""" * Report describing this work: :cite:`WK22b`. * Paper describing applications of this work: :cite:`KW23`.