August 15, 2017
Reconstructing ancient oxidant levels and their climatic effects
Oxidants in the troposphere, such as ozone and hydroxyl radicals, influence the life spans of other atmospheric components, including pollutants …
The EARTH archive
Ozone
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7 articles · Page 1 of 1
May 15, 2017
"Blob"-related warming contributed to Pacific Northwest ozone spike
In June 2015, instruments on Oregon’s Mount Bachelor recorded mean ozone for the month at 56 parts per billion, more than 20 percent higher than …
January 25, 2017
Red Planet Roundup: February 2017
With two rovers patrolling the surface of Mars, six spacecraft orbiting above it, and scientists here on Earth studying the Red Planet from afar, …
September 1, 2015
Benchmarks: September 16, 1987: Montreal Protocol Signed
Each year in late September to early October, atmospheric scientists watch with anticipation as ozone concentrations over Antarctica drop, …
June 8, 2015
Hydrogen chloride on the rise in Northern Hemisphere skies
Levels of the atmospheric pollutant hydrogen chloride have increased substantially in the lower stratosphere over the Northern Hemisphere since …
November 4, 2014
Carbon tet still offensive to ozone layer
Earth’s ultraviolet light-shielding ozone layer is recovering, according to a report released in September by the World Meteorological …
January 5, 2012
Montreal Protocol affects more than just ozone
In 1987, nearly 200 nations signed the Montreal Protocol to restrict the use of ozone-depleting chemicals. The international treaty helped keep …