Sentences with phrase «showed ozone levels»

EPA data shows ozone levels declined 18 percent between 2008 and 2013.

Not exact matches

As shown in previous studies, the litter from the polluted site, which had endured high levels of atmospheric nitrogen oxides and ozone, had higher nitrogen content than litter from the clean site.

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.

A new study of 60 million Americans — about 97 % of people age 65 and older in the United States — shows that long - term exposure to airborne fine particulate matter (PM2.5) and ozone increases the risk of premature death, even when that exposure is at levels below the National Ambient Air Quality Standards (NAAQS) currently established by the U.S. Environmental Protection Agency.

Shown are the 1988 - 2014trends in springtime ozone levels on days that were very smoggy (top panel) and of average smogginess (bottom panel), from observations (left) and from a model built by the Geophysical Fluid Dynamics Laboratory (right).

The detailed study shows that Americans face the risk of a 70 percent increase in unhealthy summertime ozone levels by 2050.

However, the research also showed that a sharp reduction in the emissions of certain pollutants would lead to dramatically decreased levels of ozone even as temperatures warm.

IMAGES BELOW show a plume of elevated ozone levels stretching from Africa to Australia.

Chemistry - transport model studies of the impact of recent changes of ozone precursor emissions, both regionally and globally as outlined above, consistently show that the local response of ozone levels has been a decrease in North America and Europe and an increase in East Asia (Verstraeten et al., 2015; Zhang et al., 2016; Lin et al., 2017).

Ozone measurements from the first week of March already show a region over the North Atlantic with very low ozone levels (< 250 Dobson units, versus minimum values of ~ 300 in the early 19Ozone measurements from the first week of March already show a region over the North Atlantic with very low ozone levels (< 250 Dobson units, versus minimum values of ~ 300 in the early 19ozone levels (< 250 Dobson units, versus minimum values of ~ 300 in the early 1980s).

Besides showing pretty views, EPIC provides scientists with metrics on climate such as cloud height, ultraviolet reflectivity, or ozone and aerosol levels.

Shown to be safe in the body on a cellular level, ozone therapy decreases inflammation.

Ozone measurements from the first week of March already show a region over the North Atlantic with very low ozone levels (< 250 Dobson units, versus minimum values of ~ 300 in the early 19Ozone measurements from the first week of March already show a region over the North Atlantic with very low ozone levels (< 250 Dobson units, versus minimum values of ~ 300 in the early 19ozone levels (< 250 Dobson units, versus minimum values of ~ 300 in the early 1980s).

In our model, Arctic ozone depletion is greatest during the decade 2010 - 2019, showing a delay of 10 - 15 years after the maximum stratospheric chlorine levels are reached.

Leaving aside the generally less well constrained results using the 1901 — 2010 period that started with two anomalously cold decades, none of these show scaling factors for «other anthropogenic» — predominantly aerosol and to a lesser extent ozone, with minor contributions from land use and other factors — that are consistent with unity at a 95 % confidence level.

Research led by the Universities of Leicester and Edinburgh and 12 other research institutions show where surface ozone levels are important for human health.

«Although stratospheric ozone losses are expected to stabilize and eventually recover to preindustrial levels over the course of the twenty - first century, these results show that increasing greenhouse gases will continue to intensify the polar vortex throughout the twenty - first century, but that radiative forcing will cause widespread temperature increases over the entire Southern Hemisphere.»

Model predictions show that ozone levels tend to be highest in regions where crops are grown.

By 2090, as many as 2 billion people globally will be breathing air above the WHO «safe» level; one paper last month showed that, among other effects, a pregnant mother's exposure to ozone raises the child's risk of autism (as much as tenfold, combined with other environmental factors).

Numerous studies showed a link / high correlation with increases in ground level ozone an premature death.

Solomon (1982) and others show how this atomic oxygen is also pumped down to lower levels to further assist ozone production, the downward mechanism coming from eddy diffusion.

Tests in a simulated indoor environment showed that each of the three plants helped deplete levels of ozone in 38 to 120 minutes.

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EPA data shows ground - level ozone in the U.S. dropped 18 percent between 2000 and 2013.