Contrasting the Biophysical and Radiative Effects of Rising CO₂ Concentrations on Ozone Dry Deposition Fluxes

Abstract

The flux of ozone between the atmosphere and the surface of the Earth represents a key coupling mechanism between the chemical composition of the atmosphere and biogeochemical processes. This process, known as "dry deposition," is responsible for approximately 20%-25% of all tropospheric ozone loss from the atmosphere, removing an important greenhouse gas, chemical oxidant, and surface pollutant (Lelieveld & Dentener, 2000). In addition to functioning as an atmospheric removal process, dry deposition acts as a source of ozone to the Earth's surface, accounting for large fluxes of toxic pollutants to the plant biosphere (Lombardozzi et al., 2018;Schiferl & Heald, 2018).Ozone dry deposition results from turbulent transport, surface chemistry, and plant physiology. Turbulent transport mediates ozone contact with the surfaces to which it deposits. Surface molecular composition influences various reaction processes, often limiting the uptake rate at which ozone is deposited (