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Proceedings Paper

The causes of the large-scale ozone depletion over Antarctica in October 2015
Author(s): V. V. Zuev
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Paper Abstract

The southern stratospheric polar vortex usually reaches its peak intensity in early September, and the size of the Antarctic ozone hole reaches its maximum in the second half of September. However, in 2015 the maximum values of the ozone hole area were observed in October and November and reached record values for these months for the last 39 years. An unusual increase in the ozone hole area in 2015 initially was explained by the influence of volcanic plume from the Calbuco eruption which occurred in April 2015 with a maximum plume altitude of 17 km. This conclusion is investigated in this study using the NOAA HYSPLIT trajectory model. It is shown that eruption plume from this Chilean volcano could not get inside the stratospheric polar vortex. The cause of the Antarctic ozone hole increase was an unusual strengthening of the polar vortex in October and November.

Paper Details

Date Published: 13 December 2018
PDF: 5 pages
Proc. SPIE 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 1083394 (13 December 2018); doi: 10.1117/12.2500158
Show Author Affiliations
V. V. Zuev, Institute for Monitoring of Climatic and Ecological Systems (Russian Federation)
National Research Tomsk State Univ. (Russian Federation)

Published in SPIE Proceedings Vol. 10833:
24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics
Gennadii G. Matvienko; Oleg A. Romanovskii, Editor(s)

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