Oceans are getting hotter due to global heating

Change in heat content relative to 1981-2010 average in zettajoules*

250

200

150

100

50

0

-50

-100

-150

-200

-250

1940

1960

1980

2000

2019

250

200

150

100

50

0

-50

-100

-150

-200

-250

1940

1950

1960

1970

1980

1990

2000

2010

2019