It extends anywhere from 4 to 12 miles (6 to 20 km) above Earth's surface up to 31 miles (50 km). But through domestic and international action, the ozone layer is … The ozone layer helps to protect life from harmful ultraviolet radiation. Find out what caused the ozone hole, and how the 1989 Montreal Protocol sought to put an end to ozone depletion. Most ozone resides in the stratosphere (a layer of the atmosphere between 10 and 40 km above us), where it acts as a shield to protect Earth's surface from the sun's harmful ultraviolet radiation. Click any map image to bring up a new page with a high-resolution image. The Stratosphere: Ozone's Home . Ozone is mainly found in two regions of the Earth's atmosphere. Fixing the ozone hole is a matter of ensuring that no ozone-depleting gases reach the stratosphere. The ozone layer, the one that protects us from radiation that comes from the Sun and outer space, is found in the stratosphere. In fact, the ozone layer absorbs most of the UV radiation the sun sends to us. Called stratospheric ozone, good ozone occurs naturally in the upper atmosphere, where it forms a protective layer that shields us from the sun's harmful ultraviolet rays. The ozone layer helps protect us from ultraviolet radiation (UV) from the sun. The stratospheric ozone layer protects life on Earth by absorbing ultraviolet light, which damages DNA in plants and animals (including humans) and leads to sunburns and skin cancer. Stratospheric ozone (the ozone layer) is beneficial because it absorbs dangerous high-energy ultraviolet light. The stratospheric ozone layer is Earth’s “sunscreen” – protecting living things from too much ultraviolet radiation from the sun. This is the layer where most commercial airliners fly and weather balloons travel to. Satellite instruments monitor the ozone layer, and we use their data to create the images that depict the amount of ozone. The emission of ozone depleting substances has been damaging the ozone layer. Visit other layers in Earth's atmosphere. Ozone occurs both in the Earth's upper atmosphere and at ground level. With a weakening of this shield, we would be more susceptible to … Ozone can be good or bad, depending on where it is found. Life as we know it wouldn’t be possible without this layer of protection. Most ozone (about 90%) resides in a layer that begins between 6 and 10 miles (10 and 17 kilometers) above the Earth's surface and extends up to about 30 miles (50 kilometers). Prior to 1979, scientists had not observed atmospheric ozone concentrations below 220 Dobson Units. Ozone is also found much nearer the ground, in the troposphere, the lowest level of Earth’s atmosphere. What helped correct ozone layer thinning? The stratosphere is where you’ll find the very important ozone layer. The easiest way to think about the atmosphere above our planet is to imagine an invisible shield that protects our planet from all … Ozone is a highly reactive molecule comprised of three oxygen atoms that occurs naturally in small amounts. The stratosphere is the next layer of the atmosphere. View the latest status of the ozone layer over the Antarctic, with a focus on the ozone hole. In 1987, the United Nations established the Montreal Protocol to regulate the quantities of these gases in the atmosphere. The stratospheric ozone layer, roughly 7 to 25 miles above Earth’s surface, is a natural sunscreen, absorbing harmful ultraviolet radiation that can damage plants and animals and affect people by causing cataracts, skin cancer and suppressed immune systems. Matter of ensuring that no ozone-depleting gases reach the stratosphere is the next layer of the ozone absorbs. The sun sends to us the United Nations established the Montreal Protocol sought to put an to. 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