Thank you - I was surprised by the down votes, although I could have added more detail to make my objection even more clear, e.g:
Using the Stefan Boltzmann law, 1 extra degree corresponds to about an extra 3 W/m2 of greenhouse radiation (using an emissivity of 0.6 for the atmosphere.) To raise 1 m2, 1 cm thick water (10 kg) by 1 C would require (4 J/g/K)*(10,000 g) ~ 40,000 J, or about 4 hours. So 100 m would take 4 years, 3 km (the average depth of the ocean) ~100 years, assuming perfect mixing. So the ocean temperature would lag by decades, possibly centuries, even if the atmosphere ramped up by 1 degree from 1850-1900, which it didn't.
Using the Stefan Boltzmann law, 1 extra degree corresponds to about an extra 3 W/m2 of greenhouse radiation (using an emissivity of 0.6 for the atmosphere.) To raise 1 m2, 1 cm thick water (10 kg) by 1 C would require (4 J/g/K)*(10,000 g) ~ 40,000 J, or about 4 hours. So 100 m would take 4 years, 3 km (the average depth of the ocean) ~100 years, assuming perfect mixing. So the ocean temperature would lag by decades, possibly centuries, even if the atmosphere ramped up by 1 degree from 1850-1900, which it didn't.