NCAR/CheMPAS-A: Release v2026.08.01, CheMPAS-A Minimum Viable Product

Résumé fourni par la source

CheMPAS-A v2026.08.01 MVP release — August 31, 2026 Highlights Initial MVP for online, mechanism-configurable chemistry in MPAS-Atmosphere MUSICA coupling: MICM gas-phase chemistry, TUV-x photolysis, and MIEM offline emissions Runtime discovery and registration of mechanism species, transported tracers, photolysis rates, and emissions diagnostics Dry-air mass mixing ratio for transport and restart; optional fraction, percent, ppmv, ppbv, and pptv output Configurable chemistry cadence, MICM substeps and tolerance, reference solves, and bounded solver-failure recovery MPAS-column and solar-geometry photolysis; static or exact-grid upper-column extensions; optional jNO2 fallback Exact-mesh surface and layered emissions; multiple inventories, signed exchange, and bounded diagnostics Parameterized lightning NOx with altitude/vertical-velocity or isotherm gating MPI-aware initialization, grid validation, mass bookkeeping, and restart-aware chemistry state Packaging and examples Pinned MUSICA-Fortran 0.16.5 integration with build-time version, revision, and MIEM checks Linux/AMD64 container build-and-run workflow; Docker Desktop support through x86-64 emulation on Apple Silicon Three containerized demonstrations: Supercell ABBA, Supercell Lightning NOx + O3, and Global Chapman + NOx Automated input setup, eight-rank execution, prior-output archiving, and basic log/NetCDF verification Wiki build, configuration, example, and provenance guidance; contributor and attribution guide MVP scope Research mechanisms and initial conditions; not a production air-quality forecast or validated global composition configuration One MPAS block per MPI task for chemistry; no multi-block chemistry support

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.