Summer 2023 Was the Northern Hemisphere’s Hottest in 2,000 Years, Study Finds
Summer 2023 Was the Northern Hemisphere’s Hottest in 2,000 Years, Study Finds
www.nytimes.com Summer 2023 Was the Northern Hemisphere’s Hottest in 2,000 Years, Study Finds
Scientists used tree rings to compare last year’s extreme heat with temperatures over the past two millenniums.
Unpaywalled version of the paper
Extra greenhouse gases in the atmosphere from the burning of fossil fuels are responsible for most of the recent increases in Earth’s temperature, but other factors — including El Niño, an undersea volcanic eruption and a reduction in sulfur dioxide aerosol pollution from container ships — may have contributed to the extremity of the heat last year.
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