Aerosols in CAM-Chem are represented using the 4-mode version of the modal aerosol model (MAM-4) from Lui et al., 2016. Background and a description of the basic aerosol model performance can be found in Liu et al., 2012. The 4 modes are accumulation (a1), Aitken (a2), coarse (a3) and primary carbon (a4).
Special note regarding CAM6 coarse mode: The geometric mean diameter and standard deviation were changed for CAM6 from those used in CAM5. See Li et al., Geosci. Model Dev., 2022 (https://doi.org/10.5194/gmd-15-8181-2022) for more details.
The species that are included in the base chemical mechanism are:
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