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by upon_drumhead 659 days ago
> Oceanic Heat Content (OHC) is the measure of the integrated vertical temperature from the sea surface to the depth of the 26°C isotherm and computed from the altimeter-derived isotherm depths in the upper ocean relative to 20°C.

https://coastwatch.noaa.gov/cwn/products/oceanic-heat-conten...

They calculate based upon the depth of a specific temperature rather then temperature at a specific depth.