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Ozone in Biological News

Research finds new cause of ozone wheezing and potential treatments

Researchers at the National Institute of Environmental Health Sciences (NIEHS), part of the National Institutes of Health, and Duke University have discovered a cause of airway irritation and wheezing after exposure to ozone, a common urban air pollutant. Using an animal model, the researchers wer...

Surface-level ozone pollution set to reduce tree growth 10 percent by 2100

Modern day concentrations of ground level ozone pollution are decreasing the growth of trees in the northern and temperate mid-latitudes, as shown in a paper publishing today in Global Change Biology . Tree growth, measured in biomass, is already 7% less than the late 1800s, and this is set to i...

Wildfires cause ozone pollution to violate health standards, new study shows

BOULDER--Wildfires can boost ozone pollution to levels that violate U.S. health standards, a new study concludes. The research, by scientists at the National Center for Atmospheric Research (NCAR), focused on California wildfires in 2007, finding that they repeatedly caused ground-level ozone to s...

Regional nuclear conflict would create near-global ozone hole, says CU-Boulder study

A limited nuclear weapons exchange between Pakistan and India using their current arsenals could create a near-global ozone hole, triggering human health problems and wreaking environmental havoc for at least a decade, according to a study led by the University of Colorado at Boulder. The comp...

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

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 plants leaves. Their finding hel...

MIT: Human-generated ozone will damage crops

CAMBRIDGE, Mass.--An 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. The analysis, reported in the November issue of Energy Policy, focused on how three environmental ch...

2007 ozone hole 'smaller than usual'

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

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

Washington - 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 ...

Skin oil -- ozone interactions worsen air quality in airplanes

Airline passengers and crews who gripe about poor cabin air quality could have a new culprit to blame: the oils on their skin, hair and clothing. A study in the current issue of ACS Environmental Science & Technology suggests interactions between body oils and ozone found in airplane cabins could ...

Oh, my aching back: Give me a shot of ozone

SAN DIEGO, Calif. (March 9, 2009)A minimally invasive interventional radiology treatmentthat safely and effectively uses oxygen/ozone to relieve the pain of herniated diskswill become standard in the United States in the next few years, predict researchers at the Society of Interventional Radiolog...

In presence of fragrant cleaning products, air purifiers that emit ozone can dirty the air

Indoor air purifiers that produce even small quantities of ozone may actually make the air dirtier when used at the same time as household cleaning products, scientists at UC Irvine have discovered. Ozone emitted by purifiers reacts in the air with unsaturated volatile organic compounds such as ...

Record ozone loss during 2006 over South Pole

Ozone measurements made by ESA's Envisat satellite have revealed the ozone loss of 40 million tons on 2 October 2006 has exceeded the record ozone loss of about 39 million tons for 2000. Ozone loss is derived by measuring the area and the depth of the ozone hole. The size of this year's ozone ho...

UCI scientists find chlorine may contribute to ozone formation

Standard methods of predicting air pollution don't take atmospheric chlorine into account, but the chemical could be responsible for 10 percent or more of daily ozone production in local air, research at UC Irvine has found. Air measurements taken nearly nonstop in the Irvine area over a two-mont...

Atmospheric ozone recovering in mid-latitudes, report shows

Concentrations of atmospheric ozone -- which protects Earth from the sun's ultraviolet radiation -- are showing signs of recovery in the most important regions of the stratosphere above the mid-latitudes in both the Northern and Southern hemispheres, a new study shows. Researchers attribute the i...

Scientists find Antarctic ozone hole to recover later than expected

Scientists from NASA and other agencies have concluded that the ozone hole over the Antarctic will recover around 2068, nearly 20 years later than previously believed. Researchers from NASA, the National Oceanic and Atmospheric Administration (NOAA) and the National Center for Atmospheric Researc...

NASA's AURA satellite peers into Earth's ozone hole

NASA researchers, using data from the agency's AURA satellite, determined the seasonal ozone hole that developed over Antarctica this year is smaller than in previous years. NASA's 2005 assessment of the size and thickness of the ozone layer was the first based on observations from the Ozone Mon...

AGU journal highlights -- Aug. 6, 2009

...hysics, Geosystems (G3). In this release: ozone depletion reduces ocean carbon uptake Study pinpo...t http://www.agu.org/jinstructions.shtml 1. ozone depletion reduces ocean carbon uptake The Sout...enton et al. consider the effects of stratospheric ozone depletion, which most previous studies had not inc...

Symposium to discuss geoengineering to fight climate change at the ESA Annual Meeting

...sed ultraviolet radiation reaching the Earth's surface. "An increase in ozone depletion over the Arctic could lead to dangerous levels of ultraviolet lig... hitting the Earth's surface," she says. "In this case, the recovery of the ozone hole over the Antarctic could be delayed by decades." Another large-scal...

Ozone, nitrogen change the way rising CO2 affects Earth's water

...d that future concentrations of carbon dioxide and ozone in the atmosphere and of nitrogen in the soil are ...or changes in soil nitrogen levels and atmospheric ozone exposure. "Failure to consider the effects of nitrogen limitation and ozone on photosynthesis can lead us to underestimate reg...

Ozone depletes oil seed rape productivity

... High ozone conditions cause a 30% decrease in yield and an increase in the concentration of a group of toxic compounds within oilseed rape plants. Combined with ...

Ozone depletes oil seed rape productivity

... High ozone conditions cause a 30% decrease in yield and an increase in the concentration of a group of toxic compounds within oilseed rape plants. Combined with ...

Salt block unexpectedly stretches in Sandia experiments

...ted salt deformations also may lead to better understanding of sea salt aerosols, implicated in problems as broad as cloud nucleation, smog formation, ozone destruction and asthma triggers, the researchers write in their paper published in the May Nanoletters . The serendipitous discovery came about as...

University of Houston diesel testing center teams with state transportation agency to cut emissions

...is an ideal urban area to obtain maximum benefits from diesel retrofits, because it has a high population density, poor air quality and is not meeting ozone standards due in large part to the nitrogen oxides emitted by diesel-powered vehicles and equipment," explained professor Mike Harold, co-principal in...

Global sunscreen won't save corals

... Mount Pinatubo did following its eruption in 1991. But critics have warned that such a scheme might also alter rainfall patterns, damage the planet's ozone layer, or have other unexpected effects. Until the current study, which used a computer model of the Earth's climate system and biosphere to simul...

Nontoxic hull coating resists barnacles, may save ship owners millions

...is hierarchical wrinkled topography seems to do the trick." Researchers created the coatings by stretching a rubber sheet, applying an ultra-violet ozone treatment to it, and then relieving the tension, causing five generations of "wrinkles" to form concurrently. The coatings were further covered with a...

Non-toxic hull coating resists barnacles, may save ship owners millions

...is hierarchical wrinkled topography seems to do the trick." Researchers created the coatings by stretching a rubber sheet, applying an ultra-violet ozone treatment to it, and then relieving the tension, causing five generations of "wrinkles" to form concurrently. The coatings were further covered with a...

Spring agricultural fires have large impact on melting Arctic

...lting process. In addition to soot, other short-lived pollutants include ozone and methane. Although global warming is largely the result of excess accumu...tly voted to jointly undertake efforts to reduce emissions of black carbon, ozone precursors, and methane in order to slow climate change and ice melt in the...

AGU journal highlights -- March 25, 2009

...xide doubles Ocean proximity aggravates Houston's ozone pollution Underground subatomic-particle measurem...2 2. Ocean proximity aggravates Houston's ozone pollution In Houston, Texas, understanding atm...tern Texas, and these sources release ground-level ozone precursors including nitrogen oxides and highly re...

Lohafex provides new insights on plankton ecology

...Some of these gases such as nitrous oxide and methane are potent greenhouse gases, others such as halogenated hydrocarbons contribute to stratospheric ozone depletion. By the end of the experiment, chlorophyll concentrations were in decline. By now the patch will have merged with its surroundings leaving b...

New simulation shows consequences of a world without Earth's natural sunscreen

... The year is 2065. Nearly two-thirds of Earth's ozone is gone -- not just over the poles, but everywhere. The infamous ozone hole over Antarctica, first discovered in the 1980...ntific Assessment Panel to review the state of the ozone layer and the environmental impact of...

AGU journal highlights -- March 12, 2009

...lain Venusian vortices Model relates South Polar ozone concentrations and wind patterns Laboratory cry.../2008GL036093 3. Model relates South Polar ozone concentrations and wind patterns The dominant ...vations and models have linked stratospheric polar ozone depletion with trends in the SAM. However, general...

Termite killer lingers as a potent greenhouse gas

...ll. Widespread use of sulfuryl fluoride began in the 1990s following the Montreal Protocol, an international treaty ratified in 1987 to protect the ozone layer by reducing the production of ozone-depleting chemicals. The protocol ordered the gradual discontinuation of methyl bromide, which has strong oz...

How increased UV exposure impacts plants

...and mosses) have long been utilized as indicators of the health of local environments, but with the recent effects of climate change and the depleting ozone layer, these plants present an important measure in their ability to withstand increased exposure to UVR. Recently, a new experiment studying bryo...

Polar research reveals new evidence of global environmental change

...f the path and intensity of storms. Studies of the ozone hole have benefited from IPY research as well, with new connections identified between the ozone concentrations above Antarctica and wind and storm...nformation will improve predictions of climate and ozone depletion. Many Arctic residents, including in...

European satellites provide new insight into ozone-depleting species

...pecies and to improve simulations of stratospheric ozone chemistry. Despite the detection of bromine mon... of stratospheric bromine." The stratospheric ozone layer that protects life on Earth from harmful ult...e second most important halogen species destroying ozone in the stratosphere. Since chlorine levels in ...

Methyl bromide alternatives indicated for North Carolina tomato production

... pests. Under the Montreal protocol of 1991, however, MeBr was defined as one of the chemicals that contributed to the depletion of the stratospheric ozone layer, resulting in an incremental reduction in the amount of MeBr produced and imported in the U.S. In January 2005, a total phase out of MeBr (excep...

Termite insecticide a potent greenhouse gas

...k Andersen, Donald Blake and Nobel Laureate F. Sherwood Rowland, who discovered that chlorofluorocarbons in aerosol cans and other products damage the ozone layer. That finding led to a worldwide ban on CFCs. "Sulfuryl fluoride has a long enough lifetime in the atmosphere that we cannot just close our e...

New satellite data reveal impact of Olympic pollution controls

...d or the amount of coal burnedwith "top down" observations from instruments on satellites. According to Pickering, data from the Netherlands-supplied ozone Monitoring Instrument (OMI) on Aura and the Measurement of Pollution in the Troposphere (MOPITT) instrument on Terra help significantly. Still, it...

Parasite-resistant peppers green alternatives to chemical pesticides

...n widely used as a plant pesticide. Since the discovery that the substance has severe negative effects on the environmentit depletes the stratospheric ozone layerthe use of methyl bromide has been phased out in the U.S. To combat parasites like root-knot nematodes without the use of chemical pesticides,...

AGU journal highlights: Nov. 11, 2008

....org/10.1029/2008GL034690 11. Wildfires boost ozone beyond health standards In 2007, about 5.3 mil...uality and, in particular, the creation of surface ozone by pollutants released by these fires, Pfister et al. analyze observations of ozone concentrations during the fires with global chemis...
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