Articles | Volume 15, issue 8
Research article
23 Apr 2015
Research article |  | 23 Apr 2015

The decrease in mid-stratospheric tropical ozone since 1991

G. E. Nedoluha, D. E. Siskind, A. Lambert, and C. Boone


Interactive discussion

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Status: closed
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Gerald Nedoluha on behalf of the Authors (24 Mar 2015)  Author's response   Manuscript 
ED: Publish as is (03 Apr 2015) by Mark Weber
AR by Gerald Nedoluha on behalf of the Authors (13 Apr 2015)
Short summary
While global stratospheric O3 has begun to recover, there are localized regions where O3 has decreased since 1991. O3 in the mid-stratosphere is very sensitive to nitrogen chemistry, with increased NOy resulting in decreased O3. We show how the observed O3 changes in the tropical mid-stratosphere can be caused by long-term variations in dynamics. These variations result in a decrease in N2O, an increase in NOy, and a resulting decrease in O3.
Final-revised paper