ACOM Community Models

ACOM builds, critically evaluates and applies process, regional- and global-scale models that address atmospheric chemistry research questions, with a focus on couplings between different components of the Earth system (water cycle, biosphere, cryosphere). This section provides the necessary modeling tools to address the following scientific challenges.


The Atmospheric Chemistry Observations and Modeling (ACOM) Laboratory at NCAR plans to develop a new community modeling infrastructure jointly with different interested groups in the world. MUSICA – the Multi-Scale Infrastructure for Chemistry and Aerosols – will become a computationally feasible global modeling framework that allows for the simulation of large-scale atmospheric phenomena, while still resolving chemistry at emission and exposure relevant scales (down to ~4 km within the next 5 years). MUSICA will eventually replace and extend the current separate community chemistry modeling efforts at NCAR (e.g. WACCM, CAM-Chem, WRF-Chem), paralleling other activities at NCAR to streamline and unify model development.


Scientific Themes


Assessments and Intercomparisons

ACOM participates in numerous model assessments and model intercomparison projects:





ACOM | Atmospheric Chemistry Observations & Modeling