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Meanwhile, hydrofluorocarbons (HFCs) saw a dramatic rise of over 309 percent during the reporting period. Although the US and China recently agreed to reduce HFC production, the two countries accounted for the bulk of the increase in HFC emissions over the reporting period.
HFC use and emissions are rapidly increasing as a result of the phaseout of ozone-depleting substances (ODS) and growing global demand for air conditioning. Although safe for the ozone layer, the continued emissions of HFCs – primarily as alternatives to ODS and also from the continued production of HCFC-22 – will have an immediate and significant effect on the Earth’s climate system. Without further controls, it is predicted that HFC emissions could negate the entire climate benefits achieved under the Montreal Protocol."
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