Simulating halocarbon concentrations in ocean and atmosphere from industrial water treatment

Maas, Josefine, Jia, Yue, Biastoch, Arne, Quack, Birgit and Tegtmeier, Susann (2019) Simulating halocarbon concentrations in ocean and atmosphere from industrial water treatment [Talk] In: SOLAS Open Science Conference 2019, 21.-25.04.2019, Sapporo, Japan.

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Abstract

Large volumes of seawater are used in different industrial sectors such as power plants and ships. Chemical disinfection of this seawater prevents bio-fouling, but also produces halogenated disinfection by-products (DBPs). One major DBP is bromoform whose anthropogenic input to the environment is highly uncertain. Halocarbons such as bromoform impact the oxidation of trace gases and ozone chemistry in the atmosphere. We quantify the contribution of DBPs from industrial waste water to oceanic halocarbon concentrations and their impact on atmospheric chemistry. Based on industrial water discharge and DBP estimates, we simulate oceanic pathways of halocarbons along NEMO-ORCA12 driven Lagrangian trajectories. Anthropogenic halocarbon concentration are strongly enhanced along the coasts in Southeast Asia, but also allow for transport into the open ocean. We highlight bromoform showing that its anthropogenic sources can explain much of observed shelf water concentrations. We show how anthropogenic marine bromine impacts tropospheric and stratospheric ozone chemistry compared to natural background emissions.

Document Type: Conference or Workshop Item (Talk)
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-CH Chemical Oceanography
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-OD Ocean Dynamics
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-ME Maritime Meteorology
Date Deposited: 03 Dec 2019 09:44
Last Modified: 03 Dec 2019 09:44
URI: http://eprints.uni-kiel.de/id/eprint/48334

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