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Junior Member
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https://earthobservatory.nasa.gov/f.../the-ozone-hole
[YOUTUBE]6BUT16jfoKk[/YOUTUBE]
引用:
In 2000, the ozone hole was the largest ever observed by scientists. But conditions slowly improved.
Data from NASA and several partners showed a 20 percent decrease in ozone depletion during August/September from 2005 to 2016.
In 2017, the hole was the smallest since 1988.
A year later, the hole was smaller than expected.
Studies suggest that the ozone layer over Antarctica should mostly recover by the middle of the 21st century.
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nature 報告的 abstract
https://www.nature.com/articles/s41586-019-1193-4
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