Over the weekend, the climate system sounded simultaneous alarms. Near the entrance to the Arctic Ocean in northwest Russia, the temperature surged to 84 degrees Fahrenheit (29 Celsius). Meanwhile, the concentration of carbon dioxide in the atmosphere eclipsed 415 parts per million for the first time in human history.
By themselves, these are just data points. But taken together with so many indicators of an altered atmosphere and rising temperatures, they blend into the unmistakable portrait of human-induced climate change.
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In Koynas, a rural area to the east of Arkhangelsk, it was even hotter on Sunday, soaring to 87 degrees (31 Celsius). Many locations in Russia, from the Kazakhstan border to the White Sea, set record-high temperatures over the weekend, some 30 to 40 degrees (around 20 Celsius) above average. The warmth also bled west into Finland, which hit 77 degrees (25 Celsius) Saturday, the country’s warmest temperature of the season so far.