During June 2025, Lorenzo Manzo updated the Stefan-Boltzmann constant in the E3SM-Project/E3SM repository to reflect the latest CODATA value, enhancing the accuracy of radiative calculations within the climate model. This work required careful handling of physics constants and integration across radiative transfer components, ensuring improved numerical precision and reproducibility in scientific computing workflows. Using Fortran and git, Lorenzo implemented and documented the change with a verifiable commit history, supporting tighter energy balance and more reliable long-term projections. The update addressed a core scientific need, contributing to improved cross-run comparability and credibility of E3SM’s climate simulation outputs.