Global average sea surface temperature (1982-2011). The mean is dashed in black; the 2023 temperature is more than four standard deviations away, even more than the El Niño years 2015 and 2016 (red). (Graph: Climatereanalyzer 5 )
Global average sea surface temperature (1982-2011). The mean is dashed in black; the 2023 temperature is more than four standard deviations away, even more than the El Niño years 2015 and 2016 ( red ). (Graph: Climatereanalyzer 5 ) An extraordinary heat wave is assailing the world's oceans with an intensity that is surprising climate researchers. Environmental physicist Nicolas Gruber provides some context. Record temperatures in the Mediterranean.1 Huge heat wave in the North Atlantic.2 The temperature of the oceans at an all-time high.3 The ocean's fever chart has been covered in the media since early summer. While this was probably the first time many people in Switzerland had heard of marine heat waves, these reports came as little surprise to me. As climate scientists, we understand very well how human-induced global warming is also pushing up ocean temperatures.
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