NATURE GEOSCIENCE | ADVANCE ONLINE PUBLICATION | www.nature.com/naturegeoscience 1
Roughly 90 % of atmospheric ozone is found in the lower strat-osphere in the ozone layer. Since about the 1970s, anthro-pogenic emissions of ozone-depleting gases have led to depletion of ~3–4 % of the total overhead ozone averaged over the globe1. The strongest depletion is found over Antarctica du...
Main Authors: | , , , , , |
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Format: | Text |
Language: | English |
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Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.461.7132 http://pjk.atmosp.physics.utoronto.ca/storage/publications/thompson_etal-2011-natgeo.pdf |
Summary: | Roughly 90 % of atmospheric ozone is found in the lower strat-osphere in the ozone layer. Since about the 1970s, anthro-pogenic emissions of ozone-depleting gases have led to depletion of ~3–4 % of the total overhead ozone averaged over the globe1. The strongest depletion is found over Antarctica during spring, when photochemical processes combine with a unique set of meteorological conditions to greatly increase the effectiveness of ozone-depleting gases, and more than half of the total over-head ozone is destroyed. Characteristics of the resulting Antarctic ozone hole are reviewed in refs 1 and 2, and the identification and attribution of the phenomenon was recently celebrated in a special edition of Nature |
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