Sentences with phrase «while ozone levels»

explained that while ozone levels may contribute to the occurrence of asthma, there are other factors that cause asthma including dust, mold, eggs, preservatives in foods, and pollen.

Not exact matches

Beyond honing communications skills, participants said while the discussions often started off with broad trends in climate science, invariably the exchanges shifted to specific local issues such as wildfires, ozone levels, crop rotations, sea level rise, droughts and air quality.

For while NASA's satellites had been monitoring ozone levels around the world 24/7, Farman had found the hole with an ageing instrument wrapped in a quilt.

And while ozone high in the atmosphere helps shield Earth from the sun's ultraviolet radiation, at ground level, it mixes with fine particulates to form breath - choking smog.

While the reduced depletion was due mostly to higher temperatures on the icy continent, scientists are hopeful that the chemical levels have dropped enough that the result is a shrinkage of the ozone hole each season.

They found that elevated CO2 of 800 ppm, increased pollen production per flower by 53 percent while the different ozone levels had no effect on the amount of pollen produced.

And while ozone in the eastern U.S. has decreased overall, the levels can spike during heat waves.

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.

While the ozone hole is a stratospheric phenomenon, it can also stir winds in the lower levels of the atmosphere, which in turn affect Antarctic sea ice.

While the first two metrics, 4MDA8 and NDGT70 reflect peak ozone levels, SOMO35 represents mid-high ozone levels summed annually, and 3MMDA1 and AVGMDA8 represent high ozone levels over a 3 — 6 month season.

While the ozone hole is a stratospheric phenomenon, it can also stir winds in the lower levels of the atmosphere, which in turn affect

``... While [ozone depleting substance] ODS levels remain high, a large stratospheric sulfuric aerosol enhancement due to a major volcanic eruption or geoengineering activities would result in a substantial chemical depletion of ozone over much of the globe.»

Fine particles emitted by vehicles (especially diesel - powered ones), coal - fired power plants, and burning wood can penetrate deep into the lungs, while car exhaust, heat, and sunlight contribute to high ozone levels.

While it is true that changing stratospheric ozone levels do impact the planets radiative balance (and vica versa) it is a 2nd order issue and global warming and ozone depletion should be viewed as two separate issues.

It's worth noting that most model projections suggest that the SAM trend may level off for a while as the ozone hole gradually declines, but those same model projections suggest the SAM trend will recover as CO2 continues to rise.

Warming must occur below the tropopause to increase the net LW flux out of the tropopause to balance the tropopause - level forcing; there is some feedback at that point as the stratosphere is «forced» by the fraction of that increase which it absorbs, and a fraction of that is transfered back to the tropopause level — for an optically thick stratosphere that could be significant, but I think it may be minor for the Earth as it is (while CO2 optical thickness of the stratosphere alone is large near the center of the band, most of the wavelengths in which the stratosphere is not transparent have a more moderate optical thickness on the order of 1 (mainly from stratospheric water vapor; stratospheric ozone makes a contribution over a narrow wavelength band, reaching somewhat larger optical thickness than stratospheric water vapor)(in the limit of an optically thin stratosphere at most wavelengths where the stratosphere is not transparent, changes in the net flux out of the stratosphere caused by stratospheric warming or cooling will tend to be evenly split between upward at TOA and downward at the tropopause; with greater optically thickness over a larger fraction of optically - significant wavelengths, the distribution of warming or cooling within the stratosphere will affect how such a change is distributed, and it would even be possible for stratospheric adjustment to have opposite effects on the downward flux at the tropopause and the upward flux at TOA).

The electron belt is on top of the proton belt, the so called van Allen belts, then there is the upper ionosphere which tends negative and the lower ionosphere that tends positive, and this coupling impact, and space particles attracted to opposing sings and a dance of high energy particles that come with O2 splitting and ozone level increases, namely toward the tropics, while the closing isobars bring particles to the poles... all mean that flaring has a HUGE electrical meaning.

The study, which appears in November's issue of Energy Policy, determined that while increases in temperature and carbon dioxide levels may actually benefit vegetation in the short run, rising ozone levels would more than offset those gains by harming crops.

While atmospheric levels of ozone - depleting chemicals were rapidly increasing before the Protocol was ratified, emissions of nearly all of these chemicals have declined substantially and atmospheric levels of most of these gases have decreased in the intervening 2 decades.

Here we have to live with the effects of the ozone hole, but while depletion is worst in spring, the UV levels of course become dangerous in summer.

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.

So, EPA is aiming at restricting ozone from industrialization, while our government policy simultaneously (and perhaps even unintentionally) increases overall ozone levels through a mandate for ethanol use.