SINGAPORE: The world’s ozone layer is on “the road to long-term recovery” despite a destructive volcanic eruption in the South Pacific, the World Meteorological Organization said on Tuesday, after efforts to phase out ozone-depleting chemicals.
On current trends, the ozone layer is on track to recover to 1980 levels by around 2066 over the Antarctic, 2045 over the Arctic and 2040 for the rest of the world, the United Nations agency said.
Though the volcanic eruption near Tonga in early 2022 led to a short period of accelerated depletion of ozone above Antarctica last year, driven by higher levels of atmospheric water vapor, overall losses were limited, it said in its annual ozone bulletin.
The ozone layer protects the earth from the sun’s ultraviolet radiation, which is linked to skin cancer and other health risks.
The Montreal Protocol, which came into effect in 1989, agreed to phase out chlorofluorocarbons and other ozone-depleting substances, and its success “stands out as a powerful symbol of hope” at a time when multilateral cooperation has come under strain, said UN Secretary-General Antonio Guterres in a statement.
CFCs have been largely replaced by hydrofluorocarbons, which do not cause ozone depletion but are a powerful climate-warming greenhouse gas.
Countries are now implementing the 2016 Kigali amendment to Montreal, which will phase down HFC production, and could avoid around 0.5 degrees Celsius of warming by 2100.
China remains the world’s biggest HFC producer, with current capacity the equivalent of nearly 2 billion metric tons of carbon dioxide. About a quarter is exported.
China’s environment ministry said on Monday it would soon publish a plan to better control HFC production. As a developing country, it is obliged to cut HFC consumption by 85 percent from 2013 to 2045.
China is cutting manufacturing quotas and cracking down on illegal production, but it warned this year it still “faces huge challenges” in phasing down HFCs, which are used by a wide range of different industries, many of which have struggled to find substitute products.

ROME: British Prime Minister Keir Starmer said that his government’s first budget next month wouldn’t take steps that undermine his goal to generate growth, but warned that unfunded spending commitments could damage the economy.
Elected in July, Starmer has said he has a dire inheritance left by the previous Conservative administration, and new finance minister Rachel Reeves has warned that taxes are likely to rise in her first budget on Oct. 30 because of what she said was a 22 billion pound ($29 billion) black hole in the public finances.
Ahead of that budget, Starmer said that, while dealing with that black hole was essential for creating the stability necessary for growth, all decisions would be made against the objective of growth.
“If it promotes economic growth, it’s in the Yes column; if it inhibits economic growth, then it’s in the No column,” Starmer told reporters on a trip to Italy on Monday.
“And because I believe that stability is vital for economic growth — I don’t think we’re going to get economic growth if we don’t stabilize the economy — we’re going to do the really hard stuff now.”
Labour has committed to a fiscal rule that day-to-day costs are met by revenues and debt must be falling as a share of the economy within five years under a budget’s forecast.
Asked if he would tweak fiscal rules to promote growth, amid concern from some economists about underinvestment in the economy, Starmer said it was a matter for the budget but strong fiscal rules were important.
“I’ve always thought it’s important to borrow to invest,” Starmer said, though he warned he didn’t want a repeat of the unfunded budget measures that sparked a crisis that forced Conservative Prime Minister Liz Truss from office in 2022.
“Unfunded commitments for spending are just as bad (as unfunded tax cuts) and likely to have the same impact on the economy.” ($1 = 0.7573 pound)