Earth  ID: 11781

Big Ozone Holes Headed For Extinction By 2040

The next three decades will see an end of the era of big ozone holes. In a new study, scientists from NASA Goddard Space Flight Center say that the ozone hole will be consistently smaller than 8 million square miles by the year 2040.

Ozone-depleting chemicals in the atmosphere cause an ozone hole to form over Antarctica during the winter months in the Southern Hemisphere. Since the Montreal Protocol agreement in 1987, emissions have been regulated and chemical levels have been declining. However, the ozone hole has still remained bigger than 8 million square miles since the early 1990s, with exact sizes varying from year to year.

The size of the ozone hole varies due to both temperature and levels of ozone-depleting chemicals in the atmosphere. In order to get a more accurate picture of the future size of the ozone hole, scientists used NASA’s AURA satellite to determine how much the levels of these chemicals in the atmosphere varied each year. With this new knowledge, scientists can confidently say that the ozone hole will be consistently smaller than 8 million square miles by the year 2040. Scientists will continue to use satellites to monitor the recovery of the ozone hole and they hope to see its full recovery before the end of the century.

Research: Inorganic chlorine variability in the Antarctic vortex and implications for ozone recovery.

Journal: Geophysical Research: Atmospheres, December 18, 2014.

Link to paper:

Here is the YouTube video.



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Lead Scientist:
Susan Strahan (USRA)

Lead Producer:
Joy Ng (USRA)

Kayvon Sharghi (USRA)

Lead Animators:
Walt Feimer (HTSI)
Vuk Nikolic
Brian Monroe (USRA)

Please give credit for this item to:
NASA's Goddard Space Flight Center

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Earth Probe Total Ozone Mapping Spectrometer (EP-TOMS)
Stratospheric Observatory for Infrared Astronomy (SOFIA)
Stratospheric Aerosol and Gas Experiment III - ISS - SAGE-3

This item is part of this series:
Narrated Movies

Goddard TV Tape:
G2015-038 -- Ozone Hole Shrinks For Good

SVS >> Ozone Hole
GCMD >> Earth Science >> Atmosphere >> Atmospheric Chemistry/Oxygen Compounds >> Ozone
SVS >> Aura
SVS >> Stratospheric Ozone
SVS >> Stratosphere
NASA Science >> Earth

GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version