The oceans have
a sun warmed surface layer overlaying the cold depths.
These turbulent currents don't generally emerge through
a sun warmed surface layer.
The deep currents interact with
a sun warmed surface layer that is a hundred or more metres deep.
Not exact matches
The
sun's rays
warm the top
layer of the ocean down to 10's of meters below the
surface.
In addition, if the
warming had been caused by an increase in the
Sun's energy, we would expect to see
warming throughout the
layers of the atmosphere, from the
surface all the way up through the stratosphere.
With the temperature of the deep oceans explained, all the
sun is doing is
warm the
surface layer from ~ 275K to ~ 290K.
Then, especially when there is excessive cloud cover over the oceans, the
Sun's energy absorbed above the clouds can actually make its way down to the ocean
surface (and below)
warming the oceans by non-radiative processes, not by direct solar radiation which mostly passes through the thin
surface layer and could barely raise the mean temperature of an asphalt paved Earth above -35 C.
«A second smoking gun is that if the
sun were responsible for global
warming, we would expect to see
warming throughout all
layers of the atmosphere, from the
surface all the way up to the upper atmosphere (stratosphere).
So the temperature of the deep oceans (presently ~ 275K) is set by heat from inside the earth before the
sun starts
warming the
surface layer.
If the
warm water heated by the
sun is driven by the wind into the deeper
layers, and also bringing colder deep waters to the
surface, the
surface stays cool, the heat is transferred down, and La Nina works its cooling magic on the globe.
Now the
sun would be expected to set up an undisturbed gradient from cold at the bottom to
warm at the top but it does not because upward radiation from the
surface plus energy drawn upwards by evaporation at the
surface creates a
layer 1 mm deep near the
surface (the subskin) which is 0.3 C cooler than the water below it.
Apologies if this has already been stated, but my view on decreased Arctic ice cover is: - 1, as Judith pointed out, when ice is at a minimum the
sun is already so low in the sky that there is no noticeable change to albedo, 2 when there is ice cover
warm water is kept at depth by differences in salinity, When there is open water, storms mix the haline
layers bringing
warm water to the
surface where it can more readily radiate it's energy into outer space.
Seriously though, considering our lack of measurement continuity it is conceivable (if not entirely believable) that energy from the
sun that heated a
surface that then emitted IR that would have been radiated to space but instead was absorbed because of the slight increase in bandwidth coverage that a few extra CO2 molecules have provided and then emitted to Earth has been transferred through the sea
surface unnoticed (cough, cough) and
warmed subsurface
layers.
Somewhere, perhaps as much as a kilometer out, she rolled onto her back and basked in the
sun and the
warm surface layer of the lake like some contented otter.