Monsoon circulations and tropical heterogeneous chlorine chemistry in the stratosphere
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Solomon_Monsoon circulations with SI.pdf
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Author(s)
Kinnison, Doug
Garcia, Rolando R.
Neely, Ryan R.
Schmidt, Anja
Barnes, John E.
Vernier, Jean-Paul
Höpfner, Michael
Solomon, Susan
Bandoro, Justin
Mills, Michael J
Date Issued
December 2016
Journal
Geophysical Research Letters
Publisher
American Geophysical Union (AGU)
Citation
Solomon, Susan, Doug Kinnison, Rolando R. Garcia, Justin Bandoro, Michael Mills, Catherine Wilka, Ryan R. Neely, et al. “Monsoon Circulations and Tropical Heterogeneous Chlorine Chemistry in the Stratosphere.” Geophysical Research Letters 43, no. 24 (December 27, 2016): 12,624–12,633.
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Author's final manuscript
Abstract
Model simulations presented in this paper suggest that transport processes associated with the summer monsoons bring increased abundances of hydrochloric acid into contact with liquid sulfate aerosols in the cold tropical lowermost stratosphere, leading to heterogeneous chemical activation of chlorine species. The calculations indicate that the spatial and seasonal distributions of chlorine monoxide and chlorine nitrate near the monsoon regions of the northern hemisphere tropical and subtropical lowermost stratosphere could provide indicators of heterogeneous chlorine processing. In the model, these processes impact the local ozone budget and decrease ozone abundances, implying a chemical contribution to longer-term northern tropical ozone profile changes at 16–19 km.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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DOI of Published Version
https://doi.org/10.1002/2016GL071778
