Marine heat waves are a consequence of climate change and are increasingly altering marine and coastal regions worldwide. An international study led by the Helmholtz-Zentrum Hereon now shows that many coastal seas absorb more CO₂ from the atmosphere during these extreme events than under normal conditions. The effect is particularly pronounced in polar and subpolar shelf seas of the Northern Hemisphere, where sea ice is declining as temperatures rise.

Marine heat waves are a consequence of climate change and are increasingly altering marine and coastal regions worldwide. An international study led by the Helmholtz-Zentrum Hereon now shows that many coastal seas absorb more CO₂ from the atmosphere during these extreme events than under normal conditions. The effect is particularly pronounced in polar and subpolar shelf seas of the Northern Hemisphere, where sea ice is declining as temperatures rise.

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