Over a two-month period, S.J. Precious contributed to the NCAR/musica and ESCOMP/atmospheric_physics repositories, focusing on both documentation and core model stability. For NCAR/musica, Precious enhanced the user-defined reactions tutorial, clarifying direct input of reaction rates and refining ambiguous modeling scenarios to improve onboarding and reproducibility. In ESCOMP/atmospheric_physics, Precious addressed a broken GPU test in the CAM RRTMGP gas optics calculation by removing unnecessary memory allocation and directly accessing mass mixing ratios, stabilizing the GPU path without sacrificing performance. The work demonstrated depth in Fortran, GPU computing, and technical writing, resulting in more robust and user-friendly climate modeling tools.