> between the 1950s and the 1980s, the temperature of the Antarctic Southern Ocean rose by 0.17 °C (0.31 °F), nearly twice the rate of the global ocean.

>The warming rate varies with depth: at a depth of a thousand metres the warming occurs at a rate of nearly 0.4 °C per century (data from 1981 to 2019), whereas warming occurs at only half that depth [sic]

So from 20% of two centruries we have developed a long term average?

The chart of excess ocean energy also relates the current ocean energy relative to an average which ends in 2006. If you're unaware this biases the end values upwards.

Calculating out their 2020 value to each kg of ocean water on earth for a depth of 700m gives 0.189Cal. In other words, less than 20% of one degree above an arbitrary average calculated on a century basis with 80% of the century data absent.

If this could just pretend to appear as science i would start to care.