Sentences with phrase «ozone layer by»

Signed in the late 1980s, the protocol saved the ozone layer by ending the use of chlorofluorocarbons in refrigerants, household goods, and industrial products.

Observations of ozone show a thinning of the Earth's protective stratospheric ozone layer by about 3 to 8 % overall since the 1970s.

Determined to protect the ozone layer by taking precautionary measures to control equitably total global emissions of substances that deplete it, with the ultimate objective of their elimination on the basis of developments in scientific knowledge, taking into account technical and economic considerations and bearing in mind the developmental needs of developing countries,

The researchers calculated that calcite could not only reflect light into space and cool the planet, but actively repair the ozone layer by neutralizing the acids caused by pollution that kick off harmful chemical reactions.

but, I would argue, won't solve the problem (we didn't save the ozone layer by taxing CFCs).

As a result of the discovery of ozone depletion and the scientific advances that delineated its causes, efforts to reduce the production, and ultimately the atmospheric concentrations, of ozone - depleting chemicals were begun in the late 1980s through the ratification of the Montreal Protocol on Substances that Deplete the Ozone Layer by many countries across the globe.

For the first time, scientists have found convincing evidence that the gargantuan hole carved in the ozone layer by man - made chemicals is steadily shrinking.

Scientists in the US say parts of Australia are being slowly parched because of greenhouse gas emissions — which means that the long - term decline in rainfall over south and south - west Australia results from fossil fuel burning and depletion of the ozone layer by human activity.

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

The Montreal Protocol on Substances that Deplete the Ozone Layer (a protocol to the Vienna Convention for the Protection of the Ozone Layer) is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion.

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.

The BAS researchers were still using a 25 - year - old instrument to assess the thickness of the ozone layer by measuring ultraviolet radiation penetrating the atmosphere.

His 25 - year - old Dobsonmeter calculated the thickness of the ozone layer by measuring ultraviolet radiation penetrating the atmosphere and it...

When nations signed the Montreal Protocol in 1987, the plan was to save the ozone layer by banning ozone - eating CFCs in aerosols, refrigerators and air - conditioning units.

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.

We managed to stop putting a hole in the ozone layer by phasing out the chemicals that were causing it (cholofluorocarbons) and, as a result, the hole is closing and there are millions fewer cases of skin cancer than there would otherwise have been.

Not exact matches

We have, for example, already taken some measures to deal with one of the probable causes of the growing holes in the ozone layer, and to reverse the destruction of European forests by acid rain.

By the late 1980s it became clear that global atmospheric pollution causing both the greenhouse effect and the hole in the ozone layer had become critical threats to life on earth (Henderson - Sellers & Blong 1989).

Marshalling convincing scientific data, they tell us that the environmental degradation caused by massive pollution of air water and land, threatens the very life of earth — fast depletion of non renewal resources, indeed of species themselves, the thinning of the ozone layer that exposes all living creatures to the danger of radiation, the build up of gases creating the greenhouse effect, increasing erosion by the sea — all these are brought out through their research.

Under the Montreal Protocol on Substances that Deplete the Ozone Layer, methyl bromide can only be used for a non-Quarantine and Pre-Shipment application if a critical use exemption has been approved by the Parties to the Montreal Protocol.

Those atoms» origin in the ozone layer might also help explain a longstanding mystery about some grains of lunar soil brought back by Apollo astronauts.

«But we have identified now that one of these chemicals is increasing rapidly and, if this increase is allowed to continue, it could offset some of the benefits to the Ozone Layer provided by the Montreal Protocol.»

Earth's protective ozone layer is well on track to recovery in the next few decades thanks to concerted international action against ozone depleting substances, according to a new assessment by 300 scientists.

But an international team of researchers, led by Oram, has now found an unexpected, growing danger to the ozone layer from substances not regulated by the treaty.

Under the Montreal Protocol to protect the ozone layer, CFCs will be banned by the end of 1995.

«First signs of healing in the Antarctic ozone layer: September ozone hole has shrunk by 4 million square kilometers since 2000.»

When the Montreal Protocol to protect the ozone layer was first signed in 1987, industrialised nations agreed to halve the manufacture of CFCs by 1998.

AMERICA's Republicans thumbed their noses at the vast majority of the world's scientists last week by claiming that there is no proof that CFCs are destroying the Earth's ozone layer.

The production of these substances has been regulated and largely prohibited already for more than 20 years by the Montreal Protocol and further international agreements on the protection of the ozone layer.

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.

«During September we typically see a rapid ozone decline, ending with about 95 percent depletion in that layer by October 1.

NOAA measurements at South Pole station monitor the ozone layer above that location by means of Dobson spectrophotometer and regular ozone - sonde balloon launches that record the thickness of the ozone layer and its vertical distribution.

Some scientists suggest that giant radiation flares could deplete the ozone layer of a planet by 94 % for two years and could even be fatal for all life.

Intense radiation could strip away the ozone layer of Earth - like planets around other stars and render them uninhabitable, according to a new study led by Dr Eike Guenther of the Thueringer Observatory in Germany.

The formation of large areas of high pressure in the lower atmosphere both lowers ozone levels, by squeezing the ozone layer above, and may provide the very cold conditions in which ozone destruction is greatest.

They produce the refrigerant HCFC - 22, a hydrochlorofluorocarbon promoted by the Montreal Protocol as a replacement to more destructive ozone layer - eating substances.

A final possibility is that there has been increased formation of the hydroxyl radical in the atmosphere — perhaps caused by the thinning of the ozone layer, which allows more ultraviolet radiation to reach low levels.

This method was employed by the successful Montreal Protocol to preserve the ozone layer.

The researchers suggest that the hole in the ozone layer over the Antarctic would have grown in size by an additional 40 % by 2013.

Earth's storm clouds are stopped about 20 kilometres up by a layer of warm air heated by ozone, which absorbs the sun's ultraviolet rays.

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

Amendments to the Montreal Protocol on protecting the ozone layer that were agreed in London in 1990 have finally been ratified by the required 20 countries.

«These extra particles may enhance the heterogeneous reactions, leading to ozone destruction, and this ozone depletion above Antarctica may worsen in 1992 by spreading to altitudes beyond the 12 to 20 kilometres layer.»

The increased wind speeds seem to be a result of cooling in the upper atmosphere, caused by the hole in the ozone layer above the pole, which is of course the result of chlorofluorocarbon (CFC) pollution.

Radiation from that blast would wipe out Earth's ozone layer, and we'd be fried by the sun.

The world's busiest aircraft flight corridor between North America and Europe borders one of the most threatened sectors of the ozone layer, over the North Atlantic, which thins by up to 25 per cent in late winter.

The whole country is aware that it is increased ultraviolet light caused by the hole in the ozone layer over Antarctica that makes the sun so vicious.

Earth's ozone layer, 10 kilometres above the surface, is produced when light from the Sun interacts with molecules of oxygen in our atmosphere, and it produces an unmistakable signal that could be detected by JWST.

The ozone layer acts as Earth's sunscreen by absorbing harmful ultraviolet radiation from incoming sunlight that can cause skin cancer and damage plants, among other harmful effects to life on Earth.