单词	ozone layer
释义	ozone layer noun : an atmospheric layer at heights of about 20 to 30 miles (32 to 48 kilometers) that is normally characterized by high ozone content which blocks most solar ultraviolet radiation from entry into the lower atmosphere Example Sentences Recent Examples on the Web The ozone layer helps absorb incoming ultraviolet radiation from the sun, shielding life on Earth from its harmful effects, such as skin cancer and cataract formation. Rachel Pannett, Washington Post, 25 Aug. 2022 Once in the stratosphere, the researchers said, continued heating can cause changes in ozone through changes in atmospheric circulation, and chemical reactions on the surface of the smoke particles can deplete the ozone layer. Rachel Pannett, Washington Post, 25 Aug. 2022 Our knowledge of toxic pollutants, the ozone layer’s depletion and man-made climate change can all be traced to the same person: British scientist James Lovelock. Will Sullivan, Smithsonian Magazine, 17 Aug. 2022 It’s the rising temperature that, in turn, affects the ozone layer. Caroline Delbert, Popular Mechanics, 28 June 2022 In the 1970s, scientists began noticing that chlorine- and fluorine-containing chemicals in consumer products and refrigerants were eroding the ozone layer, leading to an uptick in solar radiation reaching the Earth’s surface. Nidhi Subbaraman, WSJ, 17 Mar. 2022 The researchers also noted how the water vapor could weaken the ozone layer that protects life on Earth from damaging radiation from the sun. Sarah Rumpf, Fox News, 4 Aug. 2022 In 2021, the Antarctic ozone layer hole grew to its 13th largest size on record since 1979. Doug Johnson, Ars Technica, 22 July 2022 For the last 40 years, scientists have believed that the ozone layer was able to shield life from harmful UV radiation when the level of oxygen in the atmosphere reached about one percent relative to the present atmospheric level. David Bressan, Forbes, 5 Jan. 2022 See More Word History First Known Use 1927, in the meaning defined above Kids Definition ozone layer noun : a layer of the earth's upper atmosphere that is characterized by high ozone content which blocks most of the sun's ultraviolet radiation from entering the lower atmosphere
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