Sentences with phrase «present ozone concentration»

Not exact matches

In addition, he says, since CFCs are not particularly soluble in water, they would not be present in cloud - born ice particles in very high concentrations, so the mechanism Lu and Sanche propose would not dissociate enough CFCs to have a big impact on ozone levels.

But because the gas does not occur naturally, even small concentrations are a sign that other more common pollutants, such as carbon monoxide and ozone, could be present.

In fact the average concentration of ozone is everywhere lower than the value that used to define the present ozone hole.

«Quantifying the greenhouse gas potency of ozone is difficult because it is not present in uniform concentrations across the globe.

This study of course does not take away very different concerns related to stratospheric aerosol SRM geoengineering, like possible damage to the ozone layer [which in turn would be good news if you hate waiting for that spring tan] and the fact that allowing CO2 concentrations to keep rising presents other problems, like the necessity to never stop with the active process of SRM geoengineering, and increasing ecological damage caused by ocean acidification.

Ozone is present in the stratosphere and has actually been depleted in the recent past by human use of CFC gases, but there is no anthropogenic process likely to add to stratospheric ozone concentraOzone is present in the stratosphere and has actually been depleted in the recent past by human use of CFC gases, but there is no anthropogenic process likely to add to stratospheric ozone concentraozone concentration.

Ozone is formed from dioxygen by the action of ultraviolet light and also atmospheric electrical discharges, and is present in low concentrations throughout the Earth's atmosphere.

However, when nitrogen oxides are present in high concentrations as a result of human - caused pollution, VOCs react with these pollutants to produce more ozone and methane.

We present an analysis of how three alternative scenarios for US power plant carbon standards could change fine particulate matter and ozone concentrations in ambient air, and the resulting public health co-benefits.