Predicted ozone layer recovery, 1950-2100

Predicted ozone layer recovery, 1950-2100

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Credit: PATRICK DUMAS/EURELIOS/SCIENCE PHOTO LIBRARY

Caption: Predicted ozone layer recovery. Forecast of the recovery in average ozone levels in the ozone layer above the Antarctic. The graph shows ozone levels (pink) returning to their 1950 level by 2100. The normal level is shown in green. This study was carried out in 2002 by CNRM, the French National Weather Research Centre. Ozone is a gas found in small quantities in the stratosphere at a height of 15-35 kilometres above the Earth's surface, where it absorbs much of the harmful ultraviolet radiation in sunlight. Stratospheric ozone levels declined after 1950 due to its destruction by long-lived chlorinated gases released by human activities. These long-lived gases were banned by the Montreal Protocol of 1987.

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Keywords: 1900s, 1950, 2002, 20th century, 2100, 21st century, antarctica, atmosphere, atmospheric science, climatological, climatology, cnrm, depletion, diagram, earth science, earth sciences, earth's, environment, forecast, geographical, geography, graph, loss, maps, model, national weather, nature, ozone hole, ozone layer, polar, prediction, recovery, research, research centre, results, sciences, south pole, stratosphere, stratospheric, trend

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