Massive 2022 eruption reduced ozone levels
November 20, 2023
The Hunga Tonga-Hunga Ha’apai volcano changed the chemistry, dynamics of Earth’s stratosphere
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Tag: ozone
Five Ozone-Depleting CFCs Increased Globally From 2010-2020
April 3, 2023
A new paper in Nature Geoscience written by an international team of scientists led by Dr. Luke Western of the National Oceanic and Atmospheric Administration (NOAA) shows that atmospheric abundances and emissions of five chlorofluorocarbons (CFCs) increased between 2010 and 2020, despite the 2010 Montreal Protocol that banned CFC production for dispersive use.
Australian Wildfires Depleted the Ozone Layer in a Variety of Ways, According to New Article
November 28, 2022
A UMD alum and professor co-authored a paper about the reduction in the thickness of Earth’s protective ozone layer that followed the Australian wildfires.
Salawitch Talks Ozone Hole in the Washington Post
October 18, 2021
Research conducted by ESSIC/AOSC scientist Ross J. Salawitch is featured in a new Washington Post article on the North Pole ozone hole that formed last year.
UMD, ESSIC Researchers Find Evidence of New CFC Production
September 7, 2021
In 1986, chlorofluorocarbons (CFCs), chemical compounds known to break down ozone in the atmosphere, were banned by the Montreal Protocol. This led to an immediate rapid decline in emissions. However, recent studies have shown that CFC-11 emissions have increased, suggesting a contribution from eastern Asia.
COVID‐19 Crisis Reduces Free Tropospheric Ozone across the Northern Hemisphere
February 26, 2021
ESSIC Visiting Assistant Research Scientist Ryan M. Stauffer is a co-author on a report that discovered that the COVID-19 crisis reduced tropospheric ozone across the Northern Hemisphere.
Large Ozone Hole Opens Above Arctic, Salawitch Consulted
March 31, 2020
A large ozone hole has opened up above the Arctic, its size rivaling the famous Antarctic ozone hole that forms in the southern hemisphere each year.
