The world’s oceans were hotter than ever recorded in 2023
Ocean heat content in upper 2,000 metres relative to 1981-2010 average (zettajoules)
300
200
100
0
-100
-200
-300
1940
1960
1980
2000
2020
Ocean heat content in upper 2,000 metres relative to 1981-2010 average (zettajoules)
300
200
100
0
-100
-200
-300
1940
1950
1960
1970
1980
1990
2000
2010
2020