Sentences with phrase «ozone pollution in»

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

The paper estimates that growing trees on 72 million hectares of land in Europe could result in 1,400 premature deaths on the continent annually at a cost of $ 7.1 B. Currently, 22,000 people are estimated to die prematurely from ozone pollution in Europe every year.

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.

Wang, T, Xue, L, Brimblecombe, P, Lam, YF, Li, L and Zhang, L 2017 Ozone pollution in China: A review of concentrations, meteorological influences, chemical precursors, and effects.

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?

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.»

By the late 1980s it became clear that global atmospheric pollution causing both the greenhouse effect and the hole in the ozone layer had become critical threats to life on earth (Henderson - Sellers & Blong 1989).

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.

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.

«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.

Connecticut's legal conflicts with the federal government over air quality issues escalated again last weekwhen the state joined New York in a lawsuit against the U.S. Environmental Protection Agency for failing to enforce ozone pollution rules.

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.

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

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.

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.

The team set out to measure air pollution in East Asia to figure out where the increase in dichloromethane was coming from and if it could affect the ozone layer.

They identified 10 environmental limits we might not want to transgress in the Anthropocene: aerosol pollution; biodiversity loss; chemical pollution; climate change; freshwater use; changes in land use (forests to fields, for example); nitrogen and phosphorus cycles; ocean acidity; and the ozone hole.

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.

Another measure, the federal Cross-State Air Pollution Rule, will require still more expensive controls on coal plants in the Midwest and South to reduce sulfur dioxide and nitrogen oxide emissions that travel across state lines, creating ozone and fine particle pollution downwind.

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.

Perhaps the most counterintuitive traveling contaminant is ozone, commonly associated with ground - level pollution in cities.

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.

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.

In Zatko's case, she says the support did produce a finding that could benefit society at large: She concluded that chemical reactions in snow were making only a minimal contribution to the region's ozone pollution, compared with emissions coming from natural gas drillinIn Zatko's case, she says the support did produce a finding that could benefit society at large: She concluded that chemical reactions in snow were making only a minimal contribution to the region's ozone pollution, compared with emissions coming from natural gas drillinin snow were making only a minimal contribution to the region's ozone pollution, compared with emissions coming from natural gas drilling.

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.

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.

Ozone seemed to stunt the trees: Saplings in rural areas, where there was less pollution but more ozone, were smaller than urban trees, which experienced dirtier air and lower ozone leOzone seemed to stunt the trees: Saplings in rural areas, where there was less pollution but more ozone, were smaller than urban trees, which experienced dirtier air and lower ozone leozone, were smaller than urban trees, which experienced dirtier air and lower ozone leozone levels.

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.

In the second scenario, Pfister and her colleagues found that sharp reductions in nitrogen oxides and volatile organic compounds could reduce ozone pollution even as the climate warmIn the second scenario, Pfister and her colleagues found that sharp reductions in nitrogen oxides and volatile organic compounds could reduce ozone pollution even as the climate warmin nitrogen oxides and volatile organic compounds could reduce ozone pollution even as the climate warms.

Visible pollutants can react with sunlight to create invisible ozone pollution, which frequently reaches unhealthy levels in major cities like Los Angeles.

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.

Increases in global temperatures could cause associated increases in premature deaths related to worsened ozone and particle pollution.

Climate change is projected to harm human health by increasing ground - level ozone and / or particulate matter air pollution in some locations.

«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.

The resultant increase in the ozone pollution has brought all the environmental efforts to a standstill.

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.»

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.

This shift, coupled with limited ozone monitoring in most developing nations, has left a number of fundamental outstanding questions: Which regions of the world have the greatest human and plant exposure to ozone pollution?

It is estimated that if the ozone pollution continues to grow at the same pace, it might start affecting the weather in the U.S. soon.