Images related to Measurements Show Reduction in Ozone-Eating Chemical

Antarctic Ozone Hole 2009
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Antarctic Ozone Hole 2009

Blues and purples in this image of Antarctic ozone concentrations reveal the developing ozone hole of 2009.

Published Sep 17, 2009

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Watching the Ozone Hole Before and After the Montreal Protocol
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Watching the Ozone Hole Before and After the Montreal Protocol

NASA satellites have observed the Antarctic ozone hole since the late 1970s—before and after nations agreed to stop producing chemicals that destroy the ozone layer.

Published Sep 18, 2012

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Ozone Hole is Smallest Since 1988
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Ozone Hole is Smallest Since 1988

The smaller ozone hole was strongly influenced by an unstable and warmer-than-usual Antarctic vortex.

Published Nov 3, 2017

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Antarctic Ozone Hole 2010
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Antarctic Ozone Hole 2010

The Ozone Monitoring Instrument (OMI) on NASA’s Aura satellite acquired data for this map of ozone concentrations over Antarctica on September 12, 2010.

Published Sep 16, 2010

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Ozone’s Long Path to Recovery
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Ozone’s Long Path to Recovery

Does a smaller hole mean that Antarctic ozone is recovering? Not yet, say NASA scientists. A deeper look at the ozone hole shows that for now weather still has a bigger influence on the size of the ozone hole than policies that limited emissions of ozone-destroying chemicals.

Published Dec 19, 2013

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Large, Deep Antarctic Ozone Hole in 2020
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Large, Deep Antarctic Ozone Hole in 2020

Ozone depletion was significantly worse than in 2019, but better than in the early 2000s.

Published Nov 2, 2020

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Antarctic Ozone Hole: 1979 to 2008
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Antarctic Ozone Hole: 1979 to 2008

In 1979, Antarctic ozone levels dropped below 200 Dobson Units for the first time on record. This threshold became the standard for defining the ozone hole. In 2008, minimum ozone levels dropped to 100 Dobson Units on October 4.

Published Jun 2, 2009

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Ozone Hole 2016, and a Historic Climate Agreement
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Ozone Hole 2016, and a Historic Climate Agreement

The same international agreement that successfully put the ozone layer on the road to recovery is now being used to address climate change.

Published Oct 27, 2016

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Ozone Hole through the years
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Ozone Hole through the years

This series of images shows the Antarctic ozone hole on the day of its maximum depletion in 1979, 1987, 2006, and 2010; that is, the days with the thinnest ozone layer.

Published Feb 1, 2011

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2011 Antarctic Ozone Minimum
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2011 Antarctic Ozone Minimum

The annual ozone hole over Antarctica reached its maximum area on September 12, 2011, and its maximum depth on October 9, 2011.

Published Oct 21, 2011

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