Department of Climate and Space Sciences and Engineering in the College of Engineering at the University of Michigan

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Professor Rood discusses new Ozone layer concerns in Science magazine

Posted: February 6, 2018

Professor Rood discusses new Ozone layer concerns in Science magazine

Climate & Space Professor Richard Rood was quoted in a new Science magazine article about the impact of short-lived chemicals on the Earth's ozone layer. Despite the recovery of stratospheric ozone concentrations over Antarctica, aided by a global phase-out of chlorofluorocarbons (CFCs) and other ozone-eating compounds, recent evidence suggests that the worldwide effort to mend the ozone layer may not yet be over. 

From the article: 
'“I don’t want people to panic or get overly worried,” says William Ball, an atmospheric physicist at the Physikalisch-Meteorologisches Observatorium Davos World Radiation Centre in Switzerland. “But there is something happening in the lower stratosphere that’s important to understand.”'

'...Ball and colleagues combined satellite data to examine ozone at mid-latitudes, from Earth’s surface on up through the troposphere and the stratosphere. They found that from 1998 to 2016, ozone in the lower stratosphere ebbed by 2.2 Dobson units--a measure of ozone thickness--even as concentrations in the upper stratosphere rose by about 0.8 Dobson units. “We saw it at almost every latitude and every altitude below about 25 kilometers,” Ball says. “That made us very concerned that perhaps this was something very real that no one looked at before.”'

Read the full article: http://www.sciencemag.org/news/2018/02/ozone-hole-s-repair-belies-thinning-planet-s-ultraviolet-shield-closer-equator