Sentences with phrase «of ozone pollution»

Significant levels of ozone pollution can be detected in rural areas as far as 250 miles (402 kilometers) downwind from urban industrial zones.

Every increase in ethanol use as fuel will increases the amount of ozone pollution in the United States.

North of Los Angeles, the area also has the second - highest level of ozone pollution in the U.S. Mountains surround the valley on three sides, creating inversion layers that trap pollution, with little wind to carry it away.

Not exact matches

And in the United States, about 4 in 10 people live in counties that have unhealthy levels of either ozone or particle pollution, according to the American Lung Association.

Global warming, the ozone hole, overpopulation, starvation and malnutrition, war, unemployment, the destruction of species and the rain forests, pollution of water and air, pesticide and herbicide poisoning, errors in genetic engineering, erosion of topsoil, overfishing, anarchy and crime, the possibility of a nuclear mishap, chemical warfare or all - out nuclear war: together, or in some cases singly, these dangers threaten to «catch us unexpectedly, like a trap.»

Nature may kick back at us from time to time — with erosion, pollution, holes in the ozone layer and so on — but we like to think that these are simply impersonal matters of ecological imbalance.

Marshalling convincing scientific data, they tell us that the environmental degradation caused by massive pollution of air water and land, threatens the very life of earth — fast depletion of non renewal resources, indeed of species themselves, the thinning of the ozone layer that exposes all living creatures to the danger of radiation, the build up of gases creating the greenhouse effect, increasing erosion by the sea — all these are brought out through their research.

Climate change, smog, acid rain, dead zones and the ozone hole are real issues affecting the planet, and nitrogen pollution plays a key role in each of them.

There is also growing understanding of the links between atmospheric problems such as local air pollution, acid rain, global climate change and stratospheric ozone depletion.

«To ask the Secretary of State for Transport whether he has requested a derogation from EU air quality legislation in relation to limits on the levels of pollution from (a) nitrogen dioxide, (b) ozone and (c) other nitrogen oxides.

The EPA says Global Companies LLC, which operates a major crude oil ship - loading terminal at the Port of Albany, has run afoul of federal air pollution standards and has been emitting more ozone - producing compounds than they say they are.

Brock LeBaron, deputy director of Utah's Division of Air Quality, which has funded some of the work in the basin and been focusing on reducing ozone pollution there, said that upcoming efforts to improve air quality should also result in reduced methane emissions in the near future.

Although ozone pollution is dropping across many parts of the United States, western Europe and Japan, many people living in those countries still experience more than a dozen days every year in which levels of the lung irritant exceed health - based standards.

«Powerful new dataset reveals patterns of global ozone pollution.»

In some parts of Asia, Africa and South America, the researchers identified data gaps which prevented them from characterizing ozone pollution exposure patterns.

However, limited and scattered ozone datasets left scientists unable to answer basic questions about the distribution and trends in ozone pollution in many parts of the world: In which regions of the world do people face the greatest ozone exposure?

Filling in all these details will make it possible to refine the accuracy of atmospheric models and help to assess such things as strategies to mitigate specific air pollution issues, from ozone to particulate matter, or to assess the sources and removal mechanisms of atmospheric components that affect Earth's climate.

Some researchers have pinned the blame on indoor air pollution and a study last year showed that when outdoor ozone levels rose, the number of people inside suffering from so - called «sick building syndrome» also increased.

Emissions of ozone - depleting chemicals in places like China are especially damaging because of cold - air surges in East Asia that can quickly carry industrial pollution into the tropics.

This is what's known about the dynamics of the stratosphere: Increasing clouds of low - lying ozone, made from the reaction between sunlight and pollution, are showing up in the western U.S. that have little or no industrial activity.

On July 12 a coalition filed suit against the EPA for its recently announced delay in the implementation of new public health — based standards for ozone pollution, on grounds similar to the methane challenge.

According to AEA Technology's National Environment Technology Centre in Abingdon, Oxfordshire — which monitors air pollution for the Department of the Environment — ozone pollution peaked in the summer heat waves of 1989 and 1990.

Maya Almaraz, a postdoctoral researcher at the University of California, Davis, decided to investigate farmland's contribution to air pollution after noticing that five of the top 10 U.S. cities for ozone pollution are in the Central Valley.

The newly discovered phenomenon over the South Seas boosts ozone depletion in the polar regions and could have a significant influence on the future climate of Earth — also because of rising air pollution in South East Asia.

Increasing levels of ozone, in turn, trap more heat, exacerbating the urban heat island effect: Cities are normally about five to 10 degrees hotter than surrounding suburbs because asphalt and cement absorb sunlight, generating a vicious cycle of escalating pollution and heat.

Even controlled burning releases pollution, including ozone - threatening chlorine compounds, says Teh Fu Yen of the University of Southern California's school of engineering in Los Angeles.

Using a computer model that fused air pollution and atmospheric chemistry data, they estimated what annual average levels of ozone (a key smog ingredient) and fine particulates smaller than 2.5 microns (PM2.5) were in 2010 within 100 - km - by -100-km grid squares across the world.

Ozone doesn't just live high in Earth's atmosphere; near the ground, it contributes to smog, and ground - level ozone has gradually increased in most places because of industrial pollution from vehicles and fossil - fuel burOzone doesn't just live high in Earth's atmosphere; near the ground, it contributes to smog, and ground - level ozone has gradually increased in most places because of industrial pollution from vehicles and fossil - fuel burozone has gradually increased in most places because of industrial pollution from vehicles and fossil - fuel burning.

«While our study mainly followed SC infants, we also had the opportunity to assess a small sample of pregnancies that were conceived through ART, and observed a higher impact of air pollution — particularly with regard to ozone exposure.

Despite the continuing evidence of the growing contribution of vehicle pollution to global warming, acid rain and ground level concentrations of ozone, there is scant sign of concerted thinking on what should be done.

Gary Cohen, president and founder of the Massachusetts - based nonprofit Health Care Without Harm, said in a telephone interview that the risks of climate change to both the health of U.S. citizens and the U.S. health care delivery system is profound, particularly in urban areas, where warming average temperatures are exacerbated by the heat island effect and high concentrations of other air pollution like ozone and particulate matter.

The study traced the increase of ozone in the west to the influx of pollution from Asian countries, including China, North and South Korea, Japan, India, and other South Asian countries.

However, periods of extreme heat and drought can trap pollution in the region, making bad ozone days worse.

Both pollution and increasing ultraviolet light streaming through ozone holes could reduce production of plankton.

While it has been known for over a decade that Asian pollution contributes to ozone levels in the United States, this study is one of the first to categorize the extent to which rising Asian emissions contribute to U.S. ozone, according to Lin.

According to the World Health Organization, most significant constituents of air pollution include particulate matter (PM), ozone, nitrogen dioxide, and sulfur dioxide.

The increased wind speeds seem to be a result of cooling in the upper atmosphere, caused by the hole in the ozone layer above the pole, which is of course the result of chlorofluorocarbon (CFC) pollution.

«Ozone and nitric oxide are both contributors to urban smog, so depending on how well a city is able to mitigate air pollution, ethanol may not be the «green fuel» that it is often called,» said Geiger, professor of chemistry in the Weinberg College of Arts and Sciences.

The study finds that titanium dioxide coatings, seen as promising for their role in breaking down airborne pollutants on contact, are likely in real - world conditions to convert abundant ammonia to nitrogen oxide, the key precursor of harmful ozone pollution.

To examine the impacts of climate change on ozone pollution, Pfister and her colleagues looked at two scenarios.

According to data from the U.S. Environmental Protection Agency (EPA), levels of all major air pollution contaminants (ozone, nitrogen oxides, carbon monoxide, sulfur dioxide, particulate matter and lead) are down significantly since 1970; carbon monoxide levels alone dropped by more than 70 percent.

The council is to step up its research into atmospheric pollution, and says that this could result in the re-routeing of aircraft to avoid damage to the ozone layer.

The study on pollution showed that ozone, which tends to form on hotter days, changes the risk profile of heat stress.

Also, the researchers referred to the US Environmental Protection Agency's Air Quality System which monitors air pollution levels at different sites across the US, and levels of ozone and fine particulate matter on a given day.

«Enhanced ozone production in urban areas is a concern because of the population size potentially impacted and because air pollution levels could be already elevated due to local and mobile sources,» explains Larsen.

According to CNBC, «the pollution has combined with ozone released by natural processes to cancel out many of the gains from stricter pollution controls enacted in the United States since 2005.»

Ozone was recorded at 160 micrograms per cubic metre, a level considered moderate - to - high on the UK's pollution index and almost twice as high as Aberdeen, which had the UK's worst ozone levels at time of wriOzone was recorded at 160 micrograms per cubic metre, a level considered moderate - to - high on the UK's pollution index and almost twice as high as Aberdeen, which had the UK's worst ozone levels at time of wriozone levels at time of writing.

These are just a few of the respiratory illnesses that are associated with exposure to ozone and air pollution particles.

The study, conducted by the researcher from the Royal Netherlands Meteorological Institute, further revealed that the Chinese ozone pollution has significantly impacted the pollution management within the U.S., resulting in an offset of 43 percent of the total effort being made.

According to the Clean Air Trust, ozone pollution can lead to a number of problems related to the respiratory system, including asthma and respiratory tract infections.