National Oceanic and
Atmospheric Administration
United States Department of Commerce

Marine heatwaves

What This Year’s ‘Astonishing’ Ocean Heat Means for the Planet

The planet’s average sea surface temperature spiked to a record high in April and the ocean has remained exceptionally warm ever since. In July, widespread marine heat waves drove temperatures back up to near-record highs, with some hot spots nearing 100 degrees Fahrenheit, or nearly 38 Celsius. Greg Johnson is interviewed. 

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