Segregation of Fast-Reactive Species in Atmospheric Turbulent Flow

Atmospheric turbulence, which produces chaotic motions in the planetary boundary layer, can inhibit mixing between fast-reacting species produced or released at different locations. This segregation process modifies the effective rate at which reactions occur between these species and is not appropr...

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Bibliographic Details
Published in:Atmosphere 2023-07, Vol.14 (7), p.1136
Main Authors: Brasseur, Guy P., Barth, Mary, Kazil, Jan, Patton, Edward G., Wang, Yuting
Format: Article
Language:English
Subjects:
Air quality management
Anthropogenic factors
Atmosphere
Atmospheric boundary layer
Atmospheric models
Atmospheric turbulence
Boundary layers
Chemistry
Emissions
Environmental aspects
Flow velocity
Hydrocarbons
Large eddy simulation
Large eddy simulations
LES
Maritime areas
Observations
Oceanic eddies
Oxidation
Ozone
Photochemistry
Planetary boundary layer
Regions
Segregation
Segregation process
Simulation
Species
Sulfur
Sulphur
Tracers
turbulence
Turbulent flow
Urban areas
VOCs
Volatile organic compounds
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Description
Summary:Atmospheric turbulence, which produces chaotic motions in the planetary boundary layer, can inhibit mixing between fast-reacting species produced or released at different locations. This segregation process modifies the effective rate at which reactions occur between these species and is not appropriately accounted for in coarse-resolution models, since these models assume complete mixing of tracers within each grid box. Here, we present a few examples of large-eddy simulations (LES) applied to chemically reactive species in a forested area with high emissions of biogenic hydrocarbons, an urban area rich in anthropogenic emissions, and a maritime area with high emissions of reduced sulfur species.
ISSN:2073-4433
2073-4433
DOI:10.3390/atmos14071136