The year 2021 ended as the 5th hottest in records maintained by the European Union's Copernicus Climate Change Service that go back to 1979. That finding comes from publicly available data analyzed by Zeke Hausfather, a climate scientist who posted his calculations on Twitter.
This is among the first readings of last year's temperature data but it won't be the last. Copernicus is expected to release its full results later this month.
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