ID: 12797

NASA Evaluates New Threats to Earth’s Ozone Layer

Released on December 8, 2017

Scientists are closely monitoring positive signs of recovery of the Earth’s stratospheric ozone layer, which is depleted by the use of chemicals called chlorofluorocarbons (CFCs) for a range of industrial and commercial purposes. Even after the landmark Montreal Protocol banned these substances in the late 1980s, threats to the ozone layer persist. Scientists at NASA’s Goddard Space Flight Center including Susan Strahan and Qing Liang (both NASA/USRA) are weighing in to an ongoing debate about the relative impacts of continuing sources of ozone depletion, including short-lived chemicals not banned by the Protocol, the effects of climate change, and banned chemicals that are still being released into the atmosphere. All could potentially delay the recovery of the seasonal ozone hole over Antarctica.

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Credits

Susan Strahan (USRA): Lead Scientist
Qing Liang (USRA): Lead Scientist
Rob Andreoli (Advocates in Manpower Management, Inc.): Lead Videographer
John Caldwell (Advocates in Manpower Management, Inc.): Videographer
Jefferson Beck (USRA): Lead Producer
Ellen T. Gray (ADNET Systems, Inc.): Lead Writer

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Keywords:
SVS >> Antarctic
SVS >> Earth
SVS >> Ozone Hole
SVS >> Ozone depletion
GCMD >> Earth Science >> Atmosphere >> Atmospheric Chemistry/Oxygen Compounds >> Ozone
SVS >> Climate Change
SVS >> Atmospheric Science
SVS >> Montreal Protocol

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 8.0.0.0.0