Sentences with phrase «of ozone damage»

Klingberg said: «The results show that the risk of ozone damage to plants is greatest in central Europe where ozone concentrations are high and climatic conditions promote uptake of ozone through the stomata.

«The increased risk of ozone damage to vegetation is mainly due to rising ozone concentrations and higher temperatures in the future,» says Jenny Klingberg at the University of Gothenburg's Department of Plant and Environmental Sciences.

Neutralizes free radicals on the upper layer of the skin to help prevent the impact of ozone damage to skin

It's easy to find a number of success stories on the power of political decisions as the industry has opposed using economic arguments also changes that have been easy to make (like some required changes for cars) or that did indeed allow for rapid technology development as reduction of sulfur emissions or replacement of ozone damaging chemicals by safer ones.

Not exact matches

Instead of using R - 22 refrigerant, which can damage the earth's protective ozone layer when released, the refrigeration systems used in the manufacturing process employ glycol as refrigerant.

Ever since the 1987 Montreal protocol phased out the use of chlorofluorocarbons (CFCs) and other ozone - depleting gases, Earth's damaged ozone layer has been on the mend.

Without a protective layer of ozone, life would be exposed to DNA - damaging ultraviolet rays from the sun.

Such sulfuric acid aerosols are already responsible for the bulk of nacreous clouds that form in the polar stratosphere; added particles would just amp up the natural process (although it might also amp up damage the ozone layer).

Emissions of ozone - depleting chemicals in places like China are especially damaging because of cold - air surges in East Asia that can quickly carry industrial pollution into the tropics.

According to previous simulations, UV - B radiation at the end of the Permian may have increased from a background level of 10 kilojoules (just above current ambient levels) to as much as 100 kilojoules, due to large concentrations of ozone - damaging halogens spewed from volcanoes (SN: 1/15/11, p. 12).

Within our solar system, the sun's wind of charged particles and radiation forms a bubble called the heliosphere, which repels cosmic rays that can affect Earth's weather, eat away at the ozone layer and damage DNA.

The trick is that the bromine and chlorine atoms in the halon molecule — the very ones that are so damaging to the stratospheric ozone — are also incredibly aggressive scavengers of hydrogen atoms, which are key to maintaining a combustion chain reaction.

Now, researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have identified an aerosol for solar geoengineering that may be able to cool the planet while simultaneously repairing ozone damage.

A new computer simulation suggests that the water vapour and sea salt thrown up by the impact could damage the Earth's protective ozone layer, leading to record levels of ultraviolet radiation that could threaten human civilisation.

The Ozone Satellite, 1991 - 2011: It proved the damage caused by CFCs, helped predict climate changes, and saw the beginning of the recovery of the ozone lOzone Satellite, 1991 - 2011: It proved the damage caused by CFCs, helped predict climate changes, and saw the beginning of the recovery of the ozone lozone layer.

It proved the damage caused by CFCs, helped predict climate changes, and saw the beginning of the recovery of the ozone layer.

They find that even if ozone - damaging chemicals (chiefly CFCs) are phased out in line with current international agreements, the amount of chlorine - bearing material in the stratosphere will continue to increase for several decades.

However, production will effectively end within the next 18 months because of the damage they do to the ozone layer.

It is loaded with authoritative analyses of biospheric damage, some of them compiled from the senator's own junkets to inspect the devastation of the rainforests, the game parks of Africa and the ozone hole above Antarctica.

They also tolerated periods of temperatures up to 41 °C and, separately, high ultraviolet radiation — which might come about from damage to the ozone layer.

The council is to step up its research into atmospheric pollution, and says that this could result in the re-routeing of aircraft to avoid damage to the ozone layer.

It neutralizes most of them before they can reach the stratosphere, preventing them from damaging the ozone layer and wreaking havoc on global climate.

«We also welcome EPA's proposal of a separate standard to protect forests from ozone damage,» Baron said.

And it could explain why past studies measured higher than expected levels of ozone - damaging chemicals in the stratosphere, Rex says.

If the troposphere's OH filter is indeed less effective than scientists thought, he says, the west Pacific would provide «a potentially very important avenue for the injection» of pollutants that could damage the ozone layer.

The Berkeley Lab team has done previous studies establishing the formation of harmful thirdhand smoke constituents by reaction of nicotine with indoor nitrous acid, showing that nicotine can react with ozone to form potentially harmful ultrafine particles, and finding that thirdhand smoke can cause genetic damage in human cells.

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

Volcanoes are not the only cause of ozone layer damage.

For soybeans, the researchers found that 46 percent of damage was actually caused by increased ozone levels — and not by increased heat, as had been previously thought.

It contains a lot of ozone, which helps block much of the sun's biologically damaging ultraviolet radiation.

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.

The report credited the Montreal Protocol, which it called «one of the world's most successful environmental treaties,» for the recovery of the ozone layer, which it projects will help prevent two million cases of skin cancer by 2030, besides preventing damage to humans» immune systems as well as wildlife and agriculture.

The ozone layer is crucial since it blocks out the harmful ultraviolet radiation from the sun known to increase the risk of skin cancer and cataract damage, in addition to other harmful effects on plants and animals.

The potential risks around sulfate aerosol solar geoengineering include alteration of regional precipitation patterns, its effects on human health, and the potential damage to Earth's ozone layer by increased stratospheric sulfate particles.

Phloretin CF features a patented synergistic combination of 2 % phloretin, 10 % pure vitamin C (l - ascorbic acid), and 0.5 % ferulic acid for enhanced protection against atmospheric skin aging — environmental damage and premature signs of aging caused by free radicals from UVA / UVB, infrared radiation (IRA), and ozone pollution (O3).

PREVENT visible signs of aging with antioxidants which neutralize the damage caused by atmospheric aggressors, like UVA / UVB, infrared, and ozone pollution.

The Cairns Convention Centers air - conditioning machines do not use chlorofluorocarbons (CFCs) as its refrigeration agent thus ensuring that there is no damage to the earths ozone layer in case of an accidental leak.

For two decades, herpetologists were caught up in a debate about a wide range of factors — from damage to the ozone layer to pesticides — that might be contributing to the amphibian die - offs, many of which were occurring in seemingly pristine places.

The transitions out of CFCs and HCFCs provide major ozone layer protection benefits, but the unintended consequence is the rapid current and projected future growth of climate - damaging HFCs.

In the CFC story there was a significant time lag between scientists sounding the first warnings (Molina & Rowland 1974) about potential damage to the ozone layer from CFCs and the ultimately unstoppable political momentum to get rid of CFCs (Montreal 1987, London 1990, etc.).

That model has worked for other environmental problems, most notably the Montreal Protocol reducing ozone - damaging chemicals, but it is badly suited to climate change, which is better seen as a problem of economics, infrastructure, and innovation.

However, in phasing out CFCs, humans created new gases, HFCs, which do not deplete the ozone layer, but are hundreds to thousands of times more damaging to the climate than carbon dioxide.

Crutzen (1970) calculated that even small amounts of nitrates could be important as catalysts; this was independently and explicitly linked to supersonic transports and ozone damage by Johnston (1971).

Editor's Notes: • HFCs are super polluting greenhouse gases thousands of times more damaging to the climate than CO2, used as substitutes for ozone - depleting substances in refrigeration, air - conditioning and foams.

However, when Americans are asked to rank environmental concerns, global warming is well below other issues, such as water pollution, air pollution, damage to the ozone layer and the loss of tropical rain forests.

[4] Her work formed the basis of the U.N. Montreal Protocol, an international agreement to protect the ozone layer by regulating damaging chemicals.

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The recovery of the damaged ozone layer which protects life on Earth from harmful solar radiation is no longer happening worldwide.

The potential risks are enormous: disrupting the food chain, damaging the ozone layer, the loss of monsoon rains in Asia — the list goes on.

This occurs because transportation in North America produces a substantial amount of black carbon (soot) and ozone (a main ingredient in smog), both of which warm climate, while power generation leads to a large amount of sulfate particles, which cool climate even as they also lead to acid rain and damage human health.