Figure1_ENSO_OISST-ERSST_graph-pair_20231012.png

Non-polar (60 °N – 60 °S) global averaged sea surface temperature from 1982-2023 from (top) daily OISSTv2.1 and (bottom) monthly ERSSTv5 datasets. The thick black lines represent the 1982-2011 average across the calendar year; 2022 (orange line), 2023 (thick red line), and 2016 (the year of record warmth before 2023; thin red line) are highlighted. The thin grey lines represent all other years. Both graphs indicate that the last few months have experienced record global ocean warmth. NOAA Climate.gov image based on graphs by Boyin Huang and data from NCEI.