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News: Study Pinpoints Source of Banned Gas... (The New York Times) - Behind the headlines

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The New York Times May 22, 2019

Study Pinpoints Source of Banned Gas That Saps Ozone Layer: Eastern China

An international team of researchers said Wednesday that two provinces in China were the source of most of the emissions of a banned gas that harms the ozone layer.

Read more at The New York Times

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Research findings and data from the National Library of Medicine

PubMed articles

Nature MAY 16, 2018

An unexpected and persistent increase in global emissions of ozone-depleting CFC-11

SA Montzka et al

The Montreal Protocol was designed to protect the stratospheric ozone layer by enabling reductions in the abundance of ozone-depleting substances such as chlorofluorocarb …

Nature MAY 22, 2019

Increase in CFC-11 emissions from eastern China based on atmospheric observations

M Rigby et al

The recovery of the stratospheric ozone layer relies on the continued decline in the atmospheric concentrations of ozone-depleting gases such as chlorofluorocarbons1

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The New York Times NOVEMBER 4, 2019

Banned Ozone-Harming Gas, Once on the Rise, Declines Again

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The New York Times FEBRUARY 10, 2021

China’s Emissions of Ozone-Harming Gas Are Declining, Studies Find

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The New York Times NOVEMBER 4, 2018

More Evidence Points to China as Source of Ozone-Depleting Gas

Delegates from nearly 200 countries are gathering in Ecuador to discuss efforts to repair the ozone layer, and the return of a banned chemical will be on the agenda.

The Washington Post MAY 22, 2019

Mysterious spike of ozone-destroying chemical is traced to east China

New emissions violate a global treaty and could delay the ozone layer’s recovery.