The increase was reported early Tuesday at international climate talks, where global officials are trying to cut emissions by 43% by 2030.

Limiting warming to 1.5 degrees is “just possible’’ but only barely and with massive emission cuts, said Intergovernmental Panel on Climate Change Chairman Jim Skea.

If China and India were excluded from the count, world carbon dioxide emissions from the burning of fossil fuels and cement manufacturing would have dropped, Friedlingstein said.

The world in 2023 increased its annual emissions by 398 million metric tons, but it was in three places: China, India and the skies.

Last year the world’s carbon emissions increased but dropped in China, which was still affected by a second wave of pandemic restrictions.

This year, China’s 4% jump in emissions is similar to the post-pandemic recovery other parts of the world had in 2022, Friedlingstein said.

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