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Carbonate Precipitation in Brine – a Potential Trigger for Tropospheric Ozone Depletion Events : Volume 6, Issue 12 (17/10/2006)

By Sander, R.

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Book Id: WPLBN0003994601
Format Type: PDF Article :
File Size: Pages 6
Reproduction Date: 2015

Title: Carbonate Precipitation in Brine – a Potential Trigger for Tropospheric Ozone Depletion Events : Volume 6, Issue 12 (17/10/2006)  
Author: Sander, R.
Volume: Vol. 6, Issue 12
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Kaleschke, L., Sander, R., & Burrows, J. (2006). Carbonate Precipitation in Brine – a Potential Trigger for Tropospheric Ozone Depletion Events : Volume 6, Issue 12 (17/10/2006). Retrieved from

Description: Air Chemistry Department, Max-Planck Institute of Chemistry, P.O. Box 3060, 55020 Mainz, Germany. Tropospheric ozone depletion events (ODEs) at high latitudes were discovered 20 years ago and are attributed to bromine explosions. However, an unresolved issue is the explanation of how the acid-catalyzed reaction cycle is triggered in atmospheric particles derived from alkaline sea water. By simulating the chemistry occuring in polar regions over recently formed sea ice, we can model successfully the transformation of inert sea-salt bromide to reactive bromine monoxide (BrO) and the subsequent ODE when precipitation of calcium carbonate from freezing sea water is taken into account. In addition, we found the temperature dependence of the equilibrium BrCl+Br↔Br2Cl to be important.

Carbonate precipitation in brine – a potential trigger for tropospheric ozone depletion events

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