The report finds that the decade was the warmest on record for land and ocean and points to “the profound transformation taking place in Polar regions”. At the same time, the ozone hole was smaller in the 2011-2020 period than during the two previous decades, reflecting the success of the Montreal Protocol. Even though economic losses from extreme events have been increasingly devastating, improvements in forecasts, early warnings, and coordinated disaster management and response have reduced the number of casualties.
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