Articles | Volume 11, issue 3
Geosci. Model Dev., 11, 1115–1131, 2018
https://doi.org/10.5194/gmd-11-1115-2018

Special issue: The Modular Earth Submodel System (MESSy) (ACP/GMD inter-journal...

Geosci. Model Dev., 11, 1115–1131, 2018
https://doi.org/10.5194/gmd-11-1115-2018

Development and technical paper 28 Mar 2018

Development and technical paper | 28 Mar 2018

Polar boundary layer bromine explosion and ozone depletion events in the chemistry–climate model EMAC v2.52: implementation and evaluation of AirSnow algorithm

Stefanie Falk and Björn-Martin Sinnhuber

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Latest update: 29 Sep 2021
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Short summary
Ozone depletion events (ODEs) in the polar boundary layer are observed frequently in spring. ODEs serve as a source of tropospheric BrO at high latitudes. A treatment of bromine release and recycling on sea-ice- and snow-covered surfaces is implemented in global chemistry–climate model EMAC based on a scheme of Toyota et al. (2011). Many aspects of bromine enhancement and associated ODEs are reproduced in both polar regions. Further bromine release mechanisms can now be tested in a global model.