Sentences with phrase «stratospheric ozone layer»

The overview report states that the «stratospheric ozone layer over the Arctic is not expected to improve significantly for at least a few decades».

Experts say the study provides the strongest evidence yet that a degraded stratospheric ozone layer causes more hazardous conditions for life on the planet's surface.

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

Record cold temperatures in the Arctic stratospheric ozone layer, 15 to 35 kilometers up, are the proximate cause for this year's losses, because they help to unleash ozone - destroying chemicals.

If Earth were placed in the same orbit as Proxima b, it would lose its protective stratospheric ozone layer roughly three times every Earth - year, Kipping says.

Only through additional study and incorporation in improved models will we accurately predict how the interplay of the multitude of factors affecting stratospheric ozone layer will respond to declines in chlorine and bromine.

Long - lived chlorine species, such as chlorofluorocarbons (CFCs), led to depletion of the stratospheric ozone layer in the 1980s, most drastically seen in the Antarctic.

The stratospheric ozone layer, a fragile shield of gas, protects Earth from harmful ultraviolet rays of the sun.

The Montreal Protocol — one of the world's most successful environmental treaties — has protected the stratospheric ozone layer and avoided enhanced UV radiation reaching the earth's surface,» said UN Under - Secretary - General and UNEP Executive Director Achim Steiner.

The reduced energy from the Sun sets into motion a sequence of events on Earth beginning with a thinning of the stratospheric ozone layer.

Yet, chlorofluorocarbons, to give them their proper name, are potent molecules that both exacerbate the blanket of greenhouse gases warming the world as well as chew up the stratospheric ozone layer protecting the planet's inhabitants from excess doses of ultraviolet sunlight.

Spray cans of sunscreen may no longer contain chlorofluorocarbons (also known as CFCs, which were phased out in the 1990s for causing holes in the stratospheric ozone layer), but many contain other chemicals that are not good for our health or the environment.

Scientists at NASA, the National Oceanic and Atmospheric Administration, as well as other international agencies constantly monitor the stratospheric ozone layer and the levels of ozone - depleting chemicals at Earth's surface.

«Mario and I realized this was not just a scientific question, but a potentially grave environmental problem involving substantial depletion of the stratospheric ozone layer,» Rowland said later.

The Montreal Protocol was established in 1987 to facilitate a global approach to combat depletion of the stratospheric ozone layer.

However, an explanation for this phenomenon was not found until 1930, when a plausible theory was put forth by Sidney Chapman for the existence of a stratospheric ozone layer.

The stratospheric ozone layer protects life on Earth by absorbing ultraviolet light, which damages DNA in plants and animals (including humans) and leads to skin cancer.

The reduced energy from the Sun sets into motion a sequence of events on Earth beginning with a thinning of the stratospheric ozone layer.

We can no longer protect the stratospheric ozone layer over the United States.

We should at least do enough research on some of the key geoengineering technologies to know whether using them would be a disastrous mistake — whether, for example, using stratospheric aerosols would quickly degrade the stratospheric ozone layer.

This reduction would have been global in extent and year - round, with near total destruction of the stratospheric ozone layer in the tropics and a 550 % increase in DNA - damaging UV wavelengths in the Northern Hemisphere midlatitudes by 2065.

The stratospheric ozone layer has become substantially depleted throughout much of the globe since the 1980s because of enhanced human production and use of ozone - depleting chemicals, such as chlorofluorocarbons, halons, and others, during the 20th century.

In each year beginning in the early 1980s the stratospheric ozone layer over Antarctica has thinned dramatically and abnormally during springtime.

This stratospheric ozone layer prevents the Sun's harmful, high - energy radiation from reaching Earth's surface.

NOAA is charged to track the amount of ozone in the stratosphere (referred to here as the «thickness» of the stratospheric ozone layer, and the atmospheric burden of ozone - depleting compounds and their alternatives.

NOAA is responsible for monitoring the stratospheric ozone layer and ozone - depleting gases and it plays a large role in making the fundamental measurements of other atmospheric variables (water vapor, nitrous oxide, aerosols, etc.) that influence the ozone layer.

And others say that the recovery of the stratospheric ozone layer (which is happening now) maybe be slowing / delaying Antarctic warming and ice melt.

This will make recovery of the stratospheric ozone layer much slower.

«Mario and I realised this was not just a scientific question, but a potentially grave environmental problem involving substantial depletion of the stratospheric ozone layer,» Rowland once recalled of his work.

It also plays an important role in the destruction of the stratospheric ozone layer which protects us from the harmful ultraviolet rays of the sun.

The stratospheric ozone layer, which protects the earth from harmful ultraviolet radiation, is still being chemically attacked by reactions involving long - lived chlorofluorocarbons (CFCs) banned 20 years ago.

Solar cycle variability is greatest at ultraviolet wavelengths, which are largely absorbed by the stratospheric ozone layer.

The soot would absorb enough solar radiation to heat surrounding gases, setting in motion a series of chemical reactions that would break down the stratospheric ozone layer protecting Earth from harmful ultraviolet radiation, said Mills.

The Ozone and Water Vapor Group conducts research on the nature and causes of the depletion of the stratospheric ozone layer and the role of stratospheric and tropospheric ozone and water vapor in forcing climate change and in modifying the chemical cleansing capacity of the atmosphere.

The stratospheric ozone layer contains 90 % of the world's known ozone (Chasek et al 164), and is life giving because it absorbs ultraviolet radiation, large amounts of which damage all forms of life.