"In addition to today's amendment, countries last week crossed the threshold for the Paris Agreement to enter into force and reached a deal to constrain global aviation emissions".
Almost 200 nations have agreed to a legally binding deal to cut back on greenhouse gases used in refrigerators and air conditioners.
Many wealthier nations have already begun to reduce their use of HFCs.
And the world's hottest countries such as India, Iran and Saudi Arabia will freeze HFCs by 2028, reducing them to 15 percent of 2025 levels by 2047.
Last Saturday, Christian Aid hailed the amendments as a sign that the world remains committed to tackling climate change following last year's historic Paris Agreement. "In due course, new innovations and products will allow us to phase out HFCs even faster, and at lower cost". The important role played by this group of chemicals, used in refrigeration and air conditioning, is evident from the scientific estimate that without a mitigation plan, HFCs could warm the world by an additional half a degree Celsius by the end of the century.
The deal, which includes the world's two biggest economies, the United States and China, divides countries into three groups with different deadlines to reduce the use of factory-made hydrofluorocarbon (HFC) gases, which can be 10,000 times more powerful than carbon dioxide as greenhouse gases. The Paris Agreement-the most significant accord on the issue-will take effect next month after an intense ratification process that lasted less than a year after negotiations concluded, an unprecedented speed in the often slow-moving world of climate diplomacy. "It is a clear statement by all world leaders that the green transformation started in Paris is irreversible and unstoppable", said United Nations environment programme executive director Erik Solheim.
U.S. Secretary of State John Kerry said the deal was "a monumental step forward" as he left the talks in the Rwandan capital of Kigali late on Friday.
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He shut the door "and within seconds, he was pushing me against the wall, and forcing his tongue down my throat". After she introduced herself, he " kissed me directly on the mouth", she told the Times .
He said it was better to give ranges because of many uncertainties.
To put it into context, HFCs are thousands of times more potent than, carbon dioxide.
'We've moved from Paris pledges to concrete action, ' said Durwood Zaelke, president of worldwide research organisation Institute for Governance and Sustainable Development.
Environment Minister Dr Nick Smith welcomed the agreement, which he said New Zealand had advocated for.
"While the freeze dates and step down levels are ambitious, the HVACR industry is confident we can meet them", Yurek said.
It is worth recalling that the Vienna Convention for the Protection of the Ozone Layer adopted in 1985 (operationalised later by the Montreal Protocol) followed a phase when major producers of chlorofluorocarbons, the earlier generation of refrigerants, tried to discredit the link between the chemicals and the developing problem of the ozone hole.