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  2. Ozone depletion - Wikipedia

    en.wikipedia.org/wiki/Ozone_depletion

    Ozone hole in North America during 1984 (abnormally warm, reducing ozone depletion) and 1997 (abnormally cold, resulting in increased seasonal depletion). Source: NASA [45] The Antarctic ozone hole is an area of the Antarctic stratosphere in which the recent ozone levels have dropped to as low as 33 percent of their pre-1975 values. [46]

  3. Ozone hole is about average size, despite undersea volcano ...

    www.aol.com/news/ozone-hole-average-size-despite...

    Instead this year’s ozone hole was about average size for the last 20 years, even a bit smaller than 2022’s, according to NASA and the National Oceanic and Atmospheric Administration. From ...

  4. Montreal Protocol - Wikipedia

    en.wikipedia.org/wiki/Montreal_Protocol

    The largest Antarctic ozone hole recorded (September 2006) 2012 retrospective video by NASA on the Montreal Protocol. The Montreal Protocol on Substances That Deplete the Ozone Layer [2] is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion ...

  5. UN says ozone layer slowly healing, hole to mend by 2066

    www.aol.com/news/un-says-ozone-layer-slowly...

    Earth’s protective ozone layer is slowly but noticeably healing at a pace that would fully mend the hole over Antarctica in about 43 years, a new United Nations report says. A once-every-four ...

  6. Halley Research Station - Wikipedia

    en.wikipedia.org/wiki/Halley_Research_Station

    Measurements from Halley led to the discovery of the ozone hole in 1985. [3] The current base is the sixth in a line of structures and includes design elements intended to overcome the challenge of building on a floating ice shelf without being buried and crushed by snow.

  7. Hole in ozone layer slowly healing, could mend by 2066, UN says

    www.aol.com/hole-ozone-layer-slowly-healing...

    DENVER (AP) — Earth’s protective ozone layer is slowly but noticeably healing at a pace that would fully mend the The post Hole in ozone layer slowly healing, could mend by 2066, UN says ...

  8. Tropospheric ozone depletion events - Wikipedia

    en.wikipedia.org/wiki/Tropospheric_ozone...

    Ozone in the troposhere is determined by photochemical production and destruction, dry deposition and cross-tropopause transport of ozone from the stratosphere. [2] In the Arctic troposphere, transport and photochemical reactions involving nitrogen oxides and volatile organic compounds (VOCs) as a result of human emissions also produce ozone resulting in a background mixing ratio of 30 to 50 ...

  9. The recovery of the ozone layer — which sits miles above the Earth and protects the planet from ultraviolet radiation — has long been celebrated as one of the world’s greatest environmental ...