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.

4 天之前 · View the latest status of the ozone layer over the Antarctic, with a focus on the ozone hole. Satellite instruments monitor the ozone layer, and we use their data to create the images that depict the amount of ozone.

2023年3月13日 · The stratosphere includes the zone commonly called the ‘ozone layer’. It plays a crucial role in keeping the planet habitable by absorbing potentially dangerous ultraviolet (UV-B) radiation from the sun. Before its depletion, the ozone layer typically absorbed 97 to 99% of incoming UV-B radiation.

2025年1月17日 · ozone layer, region of the upper atmosphere, between roughly 15 and 35 km (9 and 22 miles) above Earth’s surface, containing relatively high concentrations of ozone molecules (O 3).

2023年10月19日 · The ozone layer is one layer of the stratosphere, the second layer of Earth’s atmosphere. The stratosphere is the mass of protective gases clinging to our planet. The stratosphere gets its name because it is stratified, or layered: as elevation increases, the stratosphere gets warmer.

2023年1月14日 · The ozone layer has been damaged over many years, in part due to chemicals called CFCs. It stands for chlorofluorocarbons, which are made up of chlorine, fluorine and carbon atoms.

2025年2月13日 · Learn about the ozone layer and how human activities deplete it. This page provides information on the chemical processes that lead to ozone layer depletion, and scientists' efforts to understand them.

2025年1月6日 · Learn about how international action under the Montreal Protocol has helped to reverse ozone layer depletion. The ozone layer hole over the Antarctic is expected to disappear by mid-century.

2019年4月18日 · What is the ozone layer, and why does it matter? Human activity has damaged this protective layer of the stratosphere, but scientists say the ozone layer is on track for recovery.

2024年12月20日 · Most of the ozone present in the atmosphere is concentrated in the stratospheric “ozone layer,” about 9 to 22 miles (15 – 35 km) above the surface (around twice the altitude at which commercial airplanes fly).