Sentences with phrase «on the ozone layer»

Higher levels of carbon dioxide, however, do have an indirect effect on the ozone layer in the stratosphere.

She has done research on ozone layer protection and nuclear chemistry, including environmental chemistry, specifically.

The lead author of the recent study on the ozone layer believes that the reversal of the hole's expansion is in large part a result of the Protocol.

In addition, albedo modification introduces secondary effects on the ozone layer, precipitation patterns, terrestrial and marine ecosystems, and human health, with unknown social, political, and economic outcomes.

«Because of its very short - lived nature, and the unlikely scenario of the emissions sustaining a high growth rate, it's highly unlikely dichloromethane would have a major impact on the ozone layer,» said Liang.

«International action on the ozone layer is a major environmental success story,» said WMO Secretary - General Michel Jarraud.

The impact of methyl bromide on the ozone layer is unusually severe and rapid.

In the case of the attack on the ozone layer by chlorofluorocarbons, the impact could be made negligible by operating on the T factor alone, that is, ban the offending chemical.

In three separate indoor UV chambers, Benca exposed the dwarf pines to 7.5, 10 and 13 times Berkeley's normal UV - B intensity, in line with estimates of the impact Siberian Trap eruptions would have had on the ozone layer if their emissions occurred over various lengths of time, ranging from 400,000 years to less than 200,000 years.

In Copenhagen, scientists advised the ministers that banning methyl bromide as a fumigant could have as much effect on the ozone layer as banning CFCs and carbon tetrachloride 3 years earlier than scheduled.

Even so, right now this success seems rather abstract: The wound that we have inflicted on the ozone layer — the hole that opens above Antarctica at the beginning of the southern hemisphere spring — still persists.

She is a co-author of IEER's report on fissile materials disposition and of several reports on ozone layer protection.

He says that the increased solar brightness over the past 20 years has not been enough to cause the observed climate changes, but believes that the impact of intense sunshine on the ozone layer and cloud cover could be affecting the climate more than the sunlight itself.

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Bromine, the ozone - depleting element found in methyl bromide, is nearly 60 times more effective at destroying ozone than the chlorine found in CFCs.9 This means that even though its atmospheric lifetime is quite short (a little over a year) 31, the immediate impact of changes in methyl bromide emissions on the ozone layer is very high compared to other chemicals.

While these different compounds each release either reactive chlorine or bromine, the two active ozone - destroying ingredients, during a series of chemical reactions, the molecules have a range of different lifetimes in the atmosphere that can affect their ultimate impact on the ozone layer and its future recovery.

«International action on the ozone layer is a major environmental success story,» WMO Secretary - General Michel Jarraud said in a UNEP statement.

Fumigation with methyl bromide, one of the most common treatments, is in the process of being phased out because of its depleting effect on the ozone layer.

«This can introduce a range of industrial chemicals with atmospheric lifetimes of just a few months to the stratosphere, which could have a potentially negative impact on the ozone layer.»

Certain particles may have a damaging effect on the ozone layer, vital for keeping harmful UV rays away from the surface of the Earth.

HFCs may not have the same impact on the ozone layer, but they are potent contributors to climate change.

David Doniger, climate policy director for the Natural Resources Defense Council, said the fine print of the ozone treaty allows signatories to consider environmental problems from such chemicals beyond impacts on the ozone layer.

Hands start going up asking about the details of shooting sulfates into the atmosphere, the amount of sulfuric acid that would make a difference, the effects of such action on the ozone layer, and so on.

The science on «particulate clouds and their effect on the ozone layer» is very clear.

The 2nd biggest lie was about man's effect on the ozone layer.