Anthropogenic global warming would be far greater without the ocean absorbing heat and carbon dioxide. This is why it is so important scientists better understand it
It is the circulation of the ocean which, by redistributing heat, limits the temperature difference between tropics and poles to about 30°C. Were the atmosphere alone responsible for moving heat, that difference would be more like 110°C. And, when it comes to anthropogenic global warming, the problem would be far greater without the ocean’s buffering effect.
The poverty of human understanding of ocean circulation, compared with that of the atmosphere, is therefore lamentable. And themeeting was treated to an excellent lamentation on the matter by Susan Lozier of the Georgia Institute of Technology, who was also last year’s president of the American Geophysical Union.
Though some oceanic overturning of this sort goes on elsewhere, 90% of it happens in the North Atlantic. And it is this North Atlantic overturning which drives what is often described as a planet-spanning conveyor belt of connected currents.
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