Since the industrial revolution, we have tripled the mercury content of
shallow ocean layers, according to the letter published in the peer - review journal Nature on Thursday.
Water from the faucet represents heat entering
the shallow ocean layer, water exiting the drain represents heat leaving the shallow oceans and entering the deep oceans, and the water level in the bathtub represents the heat in
the shallow ocean layer.
Water from the faucet represents heat entering
the shallow ocean layer.
The water level in the bathtub represents the heat in
the shallow ocean layer (which is what we measure).
Not exact matches
When the newly multiplied bacteria died, they fell to the floor of those
ocean shallows, stacking up
layer by
layer to decay and enrich the mud with phosphorus.
During field trips out to West Texas, he and Rice students noticed hundreds of ash
layers in exposed rock that dated to the Cretaceous period when much of western North America lay beneath a
shallow ocean.
Faster flow is more turbulent, and in this turbulence more heat is mixed into AABW from
shallower, warmer
ocean layers — thus warming the abyssal waters on their way to the Equator, affecting global climate change.
In the
shallower Arctic
Ocean most of those deposits are tucked underneath a thick
layer of sediment, impeding their travel.
I would claim that the surface temperature — which is a comparatively easy thing to measure — is a relevant test of climate physics because a lot of the
ocean response is indeed determined by the relatively
shallow mixed
layer.
In addition to the
shallow La Niña — like patterns in the Pacific that were the previous focus, we found that the slowdown is mainly caused by heat transported to deeper
layers in the Atlantic and the Southern
oceans, initiated by a recurrent salinity anomaly in the subpolar North Atlantic.
Under the new slab -
ocean approach, the LHF increase is weaker under warming, the Cu
layer shallows (if the large - scale subsidence rate is kept fixed), and the inversion strengthens.
The dissipative friction force is a viscous friction between the surface mixed
layer and the deeper
ocean layers or the
shallow continental shelf.
Mugwump, you talk about the «average diapycnal heat transfer of the
ocean», but what Douglass» revised model actually requires is the heat transfer out of the upper mixed
layer, which must (according to his ~ 5 month time scale) be very
shallow.
It's important to point out that overall deep -
ocean heating (0 - 2,000 meters) shows no sign of a slow down in recent years, though
shallower layers (0 - 300 meters and 0 - 700 meters) do.
It doesn't even appear to be enough to raise the temperature of the
shallow surface
layer by more than a fraction of a degree to say nothing of imparting any significant warmth to the other 90 % of the volume of the global
ocean below the thermocline (400 + meters deep).
This is still very early science, and we have some estimates of what may happen to those from modelling studies, from looking at the way in which the heating of the very upper
layers of the Arctic
Ocean is transferred down through the depth of the ocean - even in these relatively shallow Arctic shelf regions - and then into the sediments that would allow the methane hydrates to destabi
Ocean is transferred down through the depth of the
ocean - even in these relatively shallow Arctic shelf regions - and then into the sediments that would allow the methane hydrates to destabi
ocean - even in these relatively
shallow Arctic shelf regions - and then into the sediments that would allow the methane hydrates to destabilise.
What are telling observations against the hypothesis of a largely internally driven imbalance are, on the one hand, the fact the sea level variations are relentlessly positive, irrespective the phase of the PDO, and, on the second hand, the fact that the rate of warming over land is larger than it is over sea (and also that the
shallow (0 - 700m)
ocean layer never actually cools).
Callendar suggested that the top
layer of the
ocean, that interacts with the atmosphere, would easily become saturated with carbon dioxide and that would affect its ability to absorb more, because, he thought, the rate of mixing of
shallow and deep oceanic waters was likely to be very slow.
But let's address the question anyway - do we expect to have seen some obvious indication of heat being transferred from the
shallow to deep
ocean layers?