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Introduction to the Community Regional Atmospheric Chemistry Multiphase Mechanism (CRACMM) (NCAR 2023)
Citation:
Pye, H. Introduction to the Community Regional Atmospheric Chemistry Multiphase Mechanism (CRACMM) (NCAR 2023). National Center for Atmospheric Research (NCAR) Visit, Boulder, CO, September 20, 2023.
Impact/Purpose:
This talk will be presented to a joint NOAA CSL/NCAR audience to foster collaboration on mechanism development. CRACMM is a new mechanism being built for use in CMAQ and other models and will be the official default version in 2026. This seminar will kick off discussions about opportunities to collaborate across EPA, NOAA, and NCAR. At more robust CRACMM will better serve EPA and other federal and state agency needs for air quality predictions for applications such as state implementation plans, the National Climate Assessment, AirToxScreen, National Air Quality Forecast Capability at the National Weather Service, and the CDC PHASE project.
Description:
Chemical mechanisms are at the core of chemical transport models used to understand drivers of air quality and predict concentrations of pollutants in present day and future conditions. Mechanisms are traditionally focused on prediction of the criteria pollutant, ozone, and mass is often duplicated for purposes of predicting other endpoints such as the secondary organic aerosol (SOA) component of fine particle mass. In this work, Dr. Pye will present the recently developed Community Regional Atmospheric Chemistry Multiphase Mechanism (CRACMM).