As you go higher into the atmosphere (and further from the Earth’s core), it gets much colder. As most of the oceans floor are closer to the core (about 10 km thick) yet as you get closer to the core it also gets much colder. Why are the oceans temperatures not warmer?
I tend to envision a large pot of water being heated on both ends by the sun and the core, churned by the current.
90 % of the total volume of ocean is found below the thermocline in the deep ocean. Much of this deep ocean water is between 0-3 degrees Celsius (32-37.5 degrees Fahrenheit)! It’s really, really cold down there!
Why is this?