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NASA Ozone Watch

External Data Spec Published 09 Apr 2015
1 min read
NASA Ozone Watch - annual records
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NASA
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http://ozonewatch.gsfc.nasa.gov/meteorology/annual_data.html

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Production and consumption of ozone-depleting substances ODSs are long-lived chemicals that contain chlorine and/or bromine and can deplete the stratospheric ozone layer. This indicator quantifies the current state of the ozone layer, the progress being made towards meeting the EU’s Montreal Protocol commitments and trends in the remaining uses of ODSs within the EU. Context: the ozone layer refers to a region of the Earth’s atmosphere (the stratosphere) in which ozone ( O 3 ) is present in concentrations high enough to absorb most of the  sun's  ultraviolet ( UV) radiation. This natural phenomenon is essential for life on Earth because UV radiation damages living tissue. Ozone depletion refers to the steady decline in the concentration of ozone in the stratosphere and the decrease in stratospheric ozone in the polar regions during the spring season. This has become widely known as the 'ozone hole'. This phenomenon was first observed during the 1970s, when it was shown that the ozone hole was caused by complex chemical reactions in the atmosphere involving so-called ODSs, which are almost exclusively a result of human industrial activity.

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For references, please go to https://www.eea.europa.eu/data-and-maps/data/external/ozone-hole-watch-annual-records or scan the QR code.

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