MUSICA Projects


An initial configuration of the MUSICA model is CESM Community Atmosphere Model with chemistry (CAM-chem) using the Spectral Element (SE) with Regional Refinement (RR) dynamical core.


MusicBox is a host model so that MICM can be run as a box model. MusicBox can be used for classroom teaching and research. To learn more about MusicBox, please go to the MusicBox web page and/or its github page.

MICM: Model Independent Chemistry Module and MusicBox

MICM is being developed to provide the atmospheric chemistry solver to any of the NCAR, and other, atmosphere models. It is being tested as a box model called MusicBox.

Recent software engineering efforts have focused on the development of the box model version of MUSICA, called MusicBox, which became available to the community in 2021. MusicBox can be utilized either in a command-line approach, which is good for conducting many simulations for research, or via a browser-based interface that allows users with little or no experience working with command-line tools to interactively  configure the full chemical system and environmental and chemical conditions, run simulations, and analyze results. The interactive browser-based interface is an on-going student-developed project and demonstrates the benefits of MUSICA software design standards for testing, run-time configurability, component application programming interfaces (APIs), and documentation.

MELODIES for MUSICA: Model EvaLuation using Observations, DIagnostics and Experiments Software

MELODIES is an NSF Earthcube project to develop a modular framework to compare model results and observations of atmospheric chemistry.

Integrating GEOS-Chem into CESM

In collaboration with Harvard and MIT (Daniel Jacob, Seb Eastham), this project will develop and evaluate a capability for using GEOS-Chem atmospheric chemistry in the NCAR Community Earth System Model (CESM).


A community effort to build a Generalized Aerosol/chemistry iNTerface (GIANT) for use across weather and climate models is being initiated to advance collaborative science.



Please direct questions/comments about this page to:

Louisa Emmons

Mary Barth