Global simulation of semivolatile organic compounds – development and evaluation of the MESSy submodel SVOC (v1.0)
Abstract. The new submodel SVOC for the Modular Earth Submodel System (MESSy) was developed and applied within the ECHAM5/MESSy Atmospheric Chemistry (EMAC) model to simulate the atmospheric cycling and air–surface exchange processes of semivolatile organic pollutants. Our focus is on four polycyclic aromatic hydrocarbons (PAHs) of largely varying properties. Some new features in input and physics parameterizations of tracers were tested: emission seasonality, the size discretization of particulate-phase tracers, the application of poly-parameter linear free-energy relationships in gas–particle partitioning, and re-volatilization from land and sea surfaces. The results indicate that the pre…
Temperature effect on phase state and reactivity controls atmospheric multiphase chemistry and transport of PAHs
Atmospheric refrigerator increases the global transport and health risks of carcinogenic PAHs.