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The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. It contains a high concentration of ozone (O 3 ) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere.
Earth’s protective ozone layer is slowly but noticeably healing at a pace that would fully mend the hole over Antarctica in about 43 years, a new United Nations report says. A once-every-four ...
Since the ozone layer absorbs UVB ultraviolet light from the sun, ozone layer depletion increases surface UVB levels (all else equal), which could lead to damage, including an increase in skin cancer. This was the reason for the Montreal Protocol.
In 1994, the UN General Assembly proclaimed 16 September the International Day for the Preservation of the Ozone Layer, commemorating the date of the signing, in 1987, of the Montreal Protocol on Substances that Deplete the Ozone Layer. [3] The closure of the hole in the ozone layer was observed 30 years after the protocol was signed. [4]
The world's ozone layer is on "the road to long-term recovery" despite a destructive volcanic eruption in the South Pacific, the World Meteorological Organization said on Tuesday, after efforts to ...
The Weather Channel A hole in our atmosphere more than twice the size of the United States is finally beginning to close up, and might even be completely gone by the end of the century, according ...
The highest levels of ozone in the atmosphere are in the stratosphere, in a region also known as the ozone layer between about 10 and 50 km above the surface (or between about 6 and 31 miles). However, even in this "layer", the ozone concentrations are only two to eight parts per million, so most of the oxygen there is dioxygen, O 2 , at about ...
However, estimates of surface UV radiation from satellite data (ozone and cloud cover) started in November 1978 with the launch of Nimbus-7/TOMS (Total Ozone Mapping Spectrometer) followed by Meteor-3/TOMS in 1991, Earth-Probe/TOMS in 1996, and by OMI (Ozone Measuring Instrument on the EOS/AURA spacecraft) in July 2004.