Reactive chlorine in the marine boundary layer in the outflow of polluted continental air: A model study

Pechtl, S and von Glasow, R (2007) Reactive chlorine in the marine boundary layer in the outflow of polluted continental air: A model study. Geophysical Research Letters, 34 (11). ISSN 1944-8007

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Abstract

Results from a numerical one-dimensional model show that continental pollution that is advected over the ocean leads to substantial acid displacement from newly emitted sea salt aerosol. Oxidation of HCl by OH and cycling between the gas and aerosol phase lead to a build-up of nighttime Cl2 mixing ratios of up to 90 pmol mol−1 in our base scenario and 125 pmol mol−1 in a sensitivity study with high wind speeds. Therefore the recirculation of continental airmasses over the ocean and back to the coast might explain previous measurements of high nighttime Cl2 in onshore winds. Furthermore, the model runs suggest a substantial contribution of daytime Cl-radical chemistry to the oxidation of volatile organic compounds under these conditions.

Item Type: Article
Uncontrolled Keywords: sdg 14 - life below water ,/dk/atira/pure/sustainabledevelopmentgoals/life_below_water
Faculty \ School: Faculty of Science > School of Environmental Sciences
UEA Research Groups: Faculty of Science > Research Groups > Volcanoes@UEA (former - to 2018)
Faculty of Science > Research Groups > Marine and Atmospheric Sciences (former - to 2017)
Faculty of Science > Research Groups > Meteorology, Oceanography and Climate Dynamics (former - to 2017)
Faculty of Science > Research Groups > Atmospheric Chemistry (former - to 2018)
Faculty of Science > Research Groups > Climate, Ocean and Atmospheric Sciences (former - to 2017)
Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences
Depositing User: Rosie Cullington
Date Deposited: 27 Feb 2011 11:09
Last Modified: 02 Feb 2023 10:30
URI: https://ueaeprints.uea.ac.uk/id/eprint/25098
DOI: 10.1029/2007GL029761

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