The world’s oceans were hotter than ever recorded in 2023

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