ozone

Climate change, atmospheric circulation will make for uneven ozone recovery

harminka — Sun, 12 Apr 2009 02:42:08 -0500

Earth's ozone layer should eventually recover from the unintended destruction brought on by the use of chlorofluorocarbons (CFCs) and similar ozone-depleting chemicals in the 20th century.

Satellite maps tropospheric ozone

harminka — Sat, 18 Oct 2008 12:54:07 -0500

Ozone is a key species in the troposphere. A strong greenhouse gas and a main component of photochemical smog, its presence affects the lifetime of methane and many other hydrocarbons.

UC San Diego chemists find important contributor to smog

harminka — Fri, 21 Mar 2008 07:26:38 -0500

Chemists at the University of California, San Diego have discovered that a chemical reaction in the atmosphere above major cities long assumed to be unimportant in urban air pollution is in fact a significant contributor to urban ozone—the main component of smog.

Gene that controls ozone resistance of plants could lead to drought-resistant crops

harminka — Wed, 27 Feb 2008 12:32:09 -0600

Biologists at the University of California, San Diego, working with collaborators at the University of Helsinki in Finland and two other European institutions, have elucidated the mechanism of a plant gene that controls the amount of atmospheric ozone entering a plant’s leaves.

Ozone can affect heavier people more

harminka — Tue, 27 Nov 2007 08:16:55 -0600

A new study provides the first evidence that people with higher body mass index (BMI) may have a greater response to ozone than leaner people. Short-term exposure to atmospheric ozone has long been known to cause a temporary drop in lung function in many people.

Western-led research studies ozone, good and bad

harminka — Fri, 09 Nov 2007 08:17:04 -0600

Depending on its altitude, ozone can be either friend or foe.

Human-caused ozone will damage crops, economy

harminka — Sat, 27 Oct 2007 05:32:13 -0500

A novel MIT study concludes that increasing levels of ozone due to the growing use of fossil fuels will damage global vegetation, resulting in serious costs to the world's economy.

2007 ozone hole 'smaller than usual'

harminka — Thu, 04 Oct 2007 06:03:41 -0500

The ozone hole over Antarctica has shrunk 30 percent as compared to last year's record size. According to measurements made by ESA’s Envisat satellite, this year’s ozone loss peaked at 27.7 million tonnes, compared to the 2006 record ozone loss of 40 million tonnes.

NASA keeps eye on ozone layer amid Montreal Protocol's success

harminka — Fri, 14 Sep 2007 08:13:09 -0500

NASA scientists will join researchers from around the world to celebrate the 20th anniversary of the Montreal Protocol, an international treaty designed to reduce the hole in Earth's protective ozone layer. The United Nations Environment Program will host the meeting from Sept. 23-26 in Athens, Greece. NASA scientists study climate change and research the timing of the recovery of the ozone layer.

Rising surface ozone reduces plant growth, adds to global warming

harminka — Thu, 26 Jul 2007 02:22:02 -0500

Scientists from three leading UK research institutes have released new findings that could have major implications for food production and global warming in the 21st century. Their research is published online in Nature (25 July 2007).

EPA ozone pollution standards unhealthy for America

harminka — Fri, 22 Jun 2007 03:21:37 -0500

David H. Ingbar MD, president of the American Thoracic Society, today called the proposed standards issued by the Environmental Protection Agency for ozone pollution-commonly known as smog-"unhealthy for America's kids, unhealthy for America's seniors, and unhealthy for America."Â

Typhoons and hurricanes are cause of troposphere and stratosphere mixing

harminka — Fri, 23 Feb 2007 12:48:22 -0600