Fall is nearly here and, for most of us, that means the end of the summer heatwave. In the waters of British Columbia, however, the seasonal cycle is stuck. A marine heatwave began more than four years ago and new research suggests it won’t be disappearing anytime soon. Marine heatwaves are not new. But heatwaves are getting more intense and more frequent with a changing climate. Over the fall and winter of 2013 and 2014, satellites detected above normal temperatures in the surface waters of the northeast Pacific. At its peak, the mass of warm water—nicknamed “The Blob”—had water temperatures up to 3 °C warmer than normal and covered an area larger than Australia.
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