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The Atmospheric Composition Modeling program conducts research on atmospheric composition and its controlling processes aimed at improving models of air quality, weather prediction and reanalysis. Researchers use atmospheric models and observations collected on the ground, in the air, and from space to develop and evaluate innovative ways of describing and simulating the emissions, transport, and chemical evolution of atmospheric gases and aerosols at regional to global scales. Scientists play key roles in International Global Atmospheric Chemistry (IGAC) activities, including the Global Emissions InitiAtive (GEIA) and the Tropospheric Ozone Assessment Report (TOAR), work to advance the role of atmospheric composition in the Unified Forecast System, NOAA's Geostationary Extended Observations (GeoXO) and NOAA's Joint Polar Satellite System missions. Scientists work collaboratively across NOAA Line Offices (OAR, NWS, NESDIS) and with partner institutions on atmospheric composition modeling initiatives, including GRA2PES, CRACMM, MELODIES MONET, and UFS-Chem, in advancing research-to-operations and delivering environmental information to stakeholders.
