The Ocean

Why oceans could face more extremes like the Pacific ‘Blob’

Research has been done to discover whether the "Blob" was a triple-compound event. Image: UNSPLASH/Asael Peña

Nicolas Gruber

Professor of environmental physics, Department of Environmental Systems Science at ETH Zurich

Philip Boyd

Professor of marine biogeochemistry, Institute of Marine and Antarctic Studies at the University of Tasmania.

Thomas Frölicher

Assistant professor in ocean modelling , Physics Institute at the University of Bern.

Meike Vogt

Senior scientist, Environmental Physics group at ETH Zurich


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'A timeseries showing the occurrence of extreme events in the northeast Pacific and the percentage of the area affected. Colours denote a single marine heatwave (light orange), a dual-compound event with simultaneous heat and low oxygen extremes (dark orange), a dual-compound event with simultaneous heat and acidity extremes (purple), and a triple-compound event with simultaneous heat, oxygen and acidity extremes (grey)'. Image: Gruber et al (2021).
'Map (left) showing the area covered by the Blob event on 20 July 2015. Grey shading indicates the extent of the triple-extreme event, while other colours represent dual and single events. The grey shading in the chart (right) indicates the depth of the water column affected'. Image: Gruber et al (2021).

' A dead sea lion lies on the beach in Hermosa Beach, California 2015'. Image: REUTERS/Lucy Nicholson


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