Earliest Ozone Loss Traced to Carbon Tetrachloride, Not CFCs
TL;DR Summary
A new PNAS study rewrites the ozone-depletion timeline, showing the first signs as early as 1957 in the tropical upper stratosphere caused by carbon tetrachloride rather than CFCs, shifting the origin of ozone loss and underscoring the importance of long-term atmospheric monitoring.
Topics:science#atmospheric-chemistry#carbon-tetrachloride#cfcs#montreal-protocol#ozone-depletion#science
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