Year: 2025
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide The reaction of ozone (O 3 ) with iodide and dissolved organic carbon (DOC) in the sea surface microlayer is a major pathway for O 3 loss from the troposphere. The impact of O 3 dry deposition to freshwater surfaces (e.g., inland lakes) is understudied, where current regional air quality models are unconstrained by experimental measurements of O 3 deposition rates. Since iodide concentrations in lake water are typically negligible, O 3 reactions at these surfaces are likely controlled by the reaction of O 3 with DOC. This study aims to better constrain the reactive loss of O 3 to inland waters by measuring the reactivity of O 3 with samples collected from freshwater lakes in Wisconsin and Michigan. We find that the reactivity of O 3 to lake water is comparable to seawater and suggest that the O 3 dry deposition rate can be parametrized as a function of lake water DOC concentration. Calculated deposition velocities and the resulting O 3 loss rates highlight that dry deposition to freshwater lakes reduces net production of O 3 particularly in shallow boundary layers.
Source: ACS ES&T Air
Institution: University of Wisconsin–Madison
Language: English
Subfield: Atmospheric Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
Award: G165858587
OpenAlex ID: W4415975415