Sentences with phrase «level ozone pollution»

But his administration has also vowed to scale back an EPA rule to limit ground - level ozone pollution, as well as an Interior Department rule to protect streams from coal - mining waste.

The Senate GOP isn't far behind: In 2015, they floated a bill to cut the EPA's budget by 9 percent and block rules on everything from ground - level ozone pollution to climate change.

It wasn't until the 2000s, for instance, that researchers realized ground - level ozone pollution from vehicles and power plants could actually kill people, not just exacerbate asthma and other respiratory problems.

The most recent research, which covers 1989 to 1992, and correlates tree sickness with low - level ozone pollution (This Week, 18 June 1994), is due to be published soon.

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.

«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.

Along with carbon pollution, coal - fired power plants spew pollutants that form ground - level ozone, or what we know as smog.

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.

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.

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.

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.

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.

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.

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.

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.

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

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.

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.

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.

China and South Asia, on the other hand, will see the most ozone - related damage to wheat, rice and soybean crops because of the chronically high levels of toxic air pollution.

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.

The burning of agricultural residue causes severe pollution in land, water and air and contributes to increased ozone levels and climate change in the long term.

Global warming is widely viewed at the policy level as a pollution problem like acid rain, smog, or the ozone hole.

Higher levels of extinction (41 — 60 %) had effects rivalling those of ozone, acidification, elevated CO2 and nutrient pollution.

Similar negative effects occur with worsening air pollution — higher levels of ground - level ozone smog and other pollutants that increase with warmer temperatures have been directly linked with increased rates of respiratory and cardiovascular disease — food production and safety — warmer temperatures and varying rainfall patterns mess up staple crop yields and aid the migration and breeding of pests that can devastate crops — flooding — as rising sea levels make coastal areas and densely - populated river deltas more susceptible to storm surges and flooding that result from severe weather — and wildfires, which can be ancillary to increased heat waves and are also responsible for poor air quality (not to mention burning people's homes and crops).

According to the European Environmental Agency, more than 90 % of urban population in the EU is exposed to fine particle (PM2.5) and ozone pollution levels above the World Health Organisation guidelines.

«Isn't it sad that you can tell people that the ozone layer is being depleted, the forests are being cut down, the deserts are advancing steadily, that the greenhouse effect will raise the sea level 200 feet, that overpopulation is choking us, that pollution is killing us, that nuclear war may destroy us — and they yawn and settle back for a comfortable nap.

Health - related costs of the current effects of ozone air pollution exceeding national standards have been estimated at $ 6.5 billion (in 2008 U.S. dollars) nationwide, based on a U.S. assessment of health impacts from ozone levels during 2000 to 2002.153,154

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

«With our hot, dry summers, we tend to see higher ozone levels because ozone is formed with a combination of air pollution and sunlight.

Smog, also known as ground - level ozone, is formed by a reaction between sunlight and pollution from car tailpipes, power plants and factories, fumes from volatile solvents and gasoline vapors.

NOx pollution contributes to nitrogen dioxide, ground - level ozone, and fine particulate matter.

Health - related costs of the current effects of ozone air pollution exceeding national standards have been estimated at $ 6.5 billion (in 2008 U.S. dollars) nationwide, based on a U.S. assessment of health impacts from ozone levels during 2000 — 2002.

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

As the climate has become warmer, weather patterns change, contributing to higher levels of air pollution like ground - level ozone that can «cause premature deaths, hospital visits, lost school days, and acute respiratory symptoms.»

It described trends such as the growing hole in the ozone layer, pollution and depletion of freshwater sources, overfishing, deforestation, plummeting wildlife populations, as well as unsustainable rises in greenhouse gas emissions, global temperatures and human population levels.

For ozone pollution, most cities improved, with some dropping to their lowest levels ever.

The EPA says ozone standards that have required scrubbers and other pollution - control equipment have yielded dramatic results, helping to slash average ozone levels 33 percent from 1980 to 2013.

In reality, carbon dioxide is of course a factor in climate change, and higher temperatures can lead to higher ozone pollution and pollen levels that trigger more asthma attacks.

Rights - of - way on public lands result in landscape and habitat fragmentation, while coal combustion produces a number of gaseous byproducts, including CO2, nitrogen dioxide, sulfur dioxide, and methane — which exacerbate climate change and are associated with ground - level ozone (smog), air pollution, and acid rain.

That is the sum Cal State Fullerton's Jane Hall believes pollution is costing the Golden State on an annual basis, according to the LAT's Louis Sahagun: the result of over 3,800 premature deaths and illnesses associated with high levels of particulates and ozone.

At its worst it can help create seven more days a year when ozone levels exceed air pollution limits.

In 2011, scientists found that American counties with the worst levels of ozone had significantly larger African - American populations than counties with less pollution.

High ozone levels downstream of pollution sources can cause elevated OH radical concentrations, which in turn increases the concentration of condensable species and thus the potential for nucleation.

Since a large body of evidence links pollution with poor health, and health is an important part of human capital, efforts to reduce pollution could plausibly be viewed as an investment in human capital and thus a tool for promoting economic growth... We find robust evidence that ozone levels well below federal air quality standards have a significant impact on productivity: a 10 ppb decrease in ozone concentrations increases worker productivity by 4.2 percent.

CAMS maps also demonstrate ozone levels over the U.S. West Coast, nitrogen dioxide pollution over Europe, and global wildfire emissions.

The planetary boundaries hypothesis, first introduced by a group of leading earth scientists in a 2009 article in Nature, posits that there are nine global, biophysical limits to human welfare: climate change, ocean acidification, the ozone layer, nitrogen and phosphate levels, land use change (the conversion of wilderness to human landscapes like farmland or cities), biodiversity loss, chemical pollutants, and particulate pollution in the atmosphere.