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