Guest essay by Wim Röst
The best kept secret in the ‘climate world’ probably is: the cooling capacity of the deep sea. Some attention is paid to the heat uptake by the oceans, but there is no attention for the cooling capacity of the deep sea. That capacity is huge and might be (and might have been) of decisive importance in climate and climate change.
Fig. 1. Temperatures in a North South section of the Atlantic Ocean
The oceans are on the average 3.688 meter deep. The surface layer, directly connected to the atmosphere, is only 100-200 meter thick. Below this layer we find cold to very cold water. And, as we know, water has an enormous capacity to absorb heat. Which means that it also has an enormous capacity to cool.
The temperature of the top surface layer is on average 18 ºC. There is a big…
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