| 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.
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 | URL:      https://link.springer.com/article/10.1007/s00376-021-0447-x |