Vehicle-induced turbulence and atmospheric pollution

Abstract. Theoretical models of the Earth's atmosphere adhere to an underlying concept flow driven by radiative transfer and nature surface over which is taking place: heat from sun and/or anthropogenic sources are sole energy driving atmospheric constituent transport. However, another source prevalent in human environment at very local scale – kinetic moving vehicles atmosphere. We show that this energy, due being co-located with combustion emissions, can influence their vertical distribution extent having a significant on lower-troposphere pollutant concentrations throughout North America. The effect vehicle-induced turbulence freshly emitted chemicals remains notable even when into account more complex urban transfer-driven theories high resolution. have designed parameterization for at-source transport pollutants mobile emissions resulting turbulence, analogy sub-grid-scale parameterizations plume rise large stacks. This allows be represented scales inherent 3D chemical models, allowing process larger regions than currently feasible eddy simulation models. Including model reduces pre-existing American nitrogen dioxide biases factor 8 improves most performance scores dioxide, particulate matter, ozone (for example, reductions root mean square errors 20 %, 9 0.5 respectively).