Upper Ocean Temperatures Hit Record High in 2020
Global upper 2000 m ocean heat content from 1958 through 2020

Fig. 1. (Upper) Global upper 2000 m OHC from 1958 through 2020. The histogram presents annual anomalies relative to a 1981-2010 baseline, with positive anomalies shown as red bars and negative anomalies as blue.
URL:     https://link.springer.com/article/10.1007/s00376-021-0447-x