 a large body of water ALWAYS warms quicker under direct sunlight than not.  At the tropics, up to 0000Wm0 of direct sunlight can reach the top of the ocean. This light reaches down to about 000 metres depth. (about0%) Compare that to the pissy backradiation that penetrates only nanometres and I'm supposed to believe that warms the oceans more than direct sunlight? Pullease  