All the sea surface water, warmed by the tropical sun, is blown to the west of the Pacific and, to compensate part of the imbalance,
cooler deep ocean waters well up on the western shores of Latin America (and spread all the way up to the Solomon Islands).
That La Niña [generally leading to a cool year — because a lot of
cool deep ocean water is spread out over a vast area of the Pacific, interacting with the atmosphere] may have been one of the strongest ever.
Not exact matches
They identified wind patterns that mixed the warmer surface and colder
deep waters to
cool the
ocean's surface and reduce the intensity of the storm.
Even as the surface warms, the
deeps remain
cool, and this cold
water will continue to periodically push the
ocean out of the El Niño state.
Warm and saline
water transported poleward
cools at the surface when it reaches high latitudes and becomes denser and subsequently sinks into the
deep ocean.
Essentially, the researchers found that
deeper warm
water is increasingly mixing with the
cool layer of
water that traditionally lies atop the eastern part of the Arctic
Ocean.
The
deep circulation that drives warm surface
waters north is weakening, leading to a
cooling of the north Atlantic relative to the rest of the
oceans.
A new paper from the Sea Around Us Project published in the journal Nature reveals that warmer
ocean temperatures are driving marine species towards
cooler,
deeper waters, and this in turn, has affected global fisheries catches.
If the correlations were positive, that temperatures matched Scenario B, would you accept skeptics saying, «Sure, but really, Scenario C is more useful», and if the
ocean - heat data looked like Lyman (2010), them saying «Sure, but that's only because
deeper heat is being transfered to the surface and replaced by
cooler waters, but we can't see it»?
«Since the
ocean component of the climate system has by far the biggest heat capacity», I've been wondering if the
cool waters of the
deep ocean could be used to mitigate the effects of global warming for a few centuries until we have really depleated our carbon reserves and the system can begin to recover on its own.
This may lead to long term heating and warming cycles in the
oceans that are the result of upwheling of
cool water from
deep within the
oceans.
IF
cool deep sea
water were mixed relentlessly with surface
water by some engineering method --(e.g. lots of wave operated pumps and 800m pipes) could that enouromous
cool reservoir of
water a) mitigate the thermal expansion of the
oceans because of the differential in thermal expansion of cold and warm
water, and b)
cool the atmosphere enough to reduce the other wise expected effects of global warming?
Even assuming that the dataset is comprehensive: Considering that the upper -
ocean cooling is seen mainly at 30N and 30S, another explanation for this
cooling is increased
ocean — to — atmosphere heat transfer in these regions (possibly aided by hurricane - mixing of the upper
ocean layer, and advection of
deeper cold
water as a result).
Consenquently, the associated SST pattern is slightly
cooler in the
deep convection upwelling regions of the Equitorial Pacific and the Indian
Ocean, strongly
cooler in the nearest
deep convection source region of the South Atlantic near Africa and the Equator, warm over the bulk of the North Atlantic, strongly warmer where the gulf stream loses the largest portion of its heat near 50N 25W, and strongly
cooler near 45N 45W, which turns out to be a back - eddy of the Gulf Stream with increased transport of cold
water from the north whenever the Gulf Stream is running quickly.
eadler2 January 10, 2015 at 5:54 pm ... When
ocean surface temperatures
cool, due to a La Nina, the warmer surface
water is mixed
deeper into the
ocean and
cooler ocean water flows along the surface of the Pacific.
When
ocean surface temperatures
cool, due to a La Nina, the warmer surface
water is mixed
deeper into the
ocean and
cooler ocean water flows along the surface of the Pacific.
Either a big chunk of ice has been melting extraordinarily fast — which would
cool the surrounding air — or somehow
ocean currents would have changed in a way that favoured more rapid warming of
deep water.
Due to the Antarctic Refrigerator Effect, the
deep oceans continued to
cool, and the thermocline that separates warm surface
water from
cooler deep waters became increasingly more shallow.
The resulting formation of Antarctic sea ice expelled colder, salty
waters that filled the abyss and began
cooling the
deep oceans.
Between 2 and 3 million years ago the
cooling of the
deep oceans reached a tipping point, and modern upwelling regions ogf cold
deep water off the coast of Peru, California and the west coast of Africa were established.
Without
cooled water plunging into the
deep ocean near Greenland, and turning back south, the entire conveyor belt will stop.
Since 4C is about the average of the
deep ocean, more
cooling on one side or the other of the convergence zone changes the average temperature of the sinking
water.
This becomes silly because, evidently, the warmer
deep ocean water is not too cold to provide warming in a polar winter, an environment that doesn't just
cool water down, it freezes it solid.
Um... while the
oceans as a whole would have to
cool, the sea surface would have to warm up substantially in order to transfer lots of heat to the air (and in order to warm up substantially, I suppose there would have to be reduced circulation with cold
deeper waters).
As gryes spin up and dilute the thermocline with
cooler water — more turbulent
deep ocean flow push to the surface.
The «strong trade winds,» says study co-author Gerald Meehl of the U.S. National Center for Atmospheric Research, «are bringing
cooler water to the surface in the equatorial Pacific and mixing more heat into the
deeper ocean.»
Ocean Thermal Energy Conversion (OTEC) uses the temperature difference between the warm tropical surface water and the cooler, deep water in the ocean to generate en
Ocean Thermal Energy Conversion (OTEC) uses the temperature difference between the warm tropical surface
water and the
cooler,
deep water in the
ocean to generate en
ocean to generate energy.
This global tidal «standing wave» leads to a long term disspation of tidal power of ~ 1 terra Watt which is sufficent to provide about 1/2 of the total power needed to drive the up welling of
cool water from the
deep oceans.
Either this is a truism (the sun must be heating the
ocean surface first) or it is meant to take into account the complex circulations that occur in the
ocean, like the Gulf Stream's involvement in a vertical rise of
waters from
deep ocean layers in one region and sinking of the
cooled surface
waters as the stream reaches its northern limit.
Remember that part of the
ocean circulations brings up
deep cooler water to the surface and this rate varies which is why the surface temperature varies.
As part of the planet's reciprocal relationship between
ocean circulation and climate, this conveyor belt transports warm surface
water to high latitudes where the
water warms the air, then
cools, sinks, and returns towards the equator as a
deep flow.»
Currents that move through the upper
ocean then dive down to depth may move some of the surface heat to the
deeper waters, especially where the currents have dived not just from
cooling water (hot
water would tend to go up, cold
water would tend to go down) but because it is driven in «conveyor» systems which may run counter to expectations of where
water should go when considering only local conditions, and especially, if the
water is dropping because of an increase in salinity.
47 Warm, shallow current Cold, salty,
deep current Fig. 20 - 12, p. 476 Figure 20.12 Natural capital: a connected loop of shallow and
deep ocean currents stores CO2 in the
deep sea and transports warm and
cool water to various parts of the earth.
The second is a temperature driven process where cold
water sinks at the poles
cooling the
deep ocean.
except we've measured the
deep ocean temperatures and found that those
waters are holding the increased warming during one of the natural warming /
cooling cycles.
This leads to a thin (1 mm
deep) layer of
cooler water over the
oceans worldwide and below the evaporative region that is some 0.3 C
cooler than the
ocean bulk below.
This gas is then
cooled using
water from
deep beneath the
ocean to restart the cycle.
Of course, if the air were to be warmer than the
ocean surface then evaporation would take the extra energy required from the air rather than the
water and that 1 mm
deep layer (0.3 C
cooler than the
ocean bulk) would rise to the surface and dissipate but that doesn't happen often or for long.
Thus,
cooling during the last 5.33 Myr in the Southern
Ocean site of
deep water formation was smaller than the global average
cooling.
Heat does transfer from the warmer upper part of the
ocean to the
deeper cooler part, not the other way around as you claim, but it's balanced by flows of cold
water descending into the
deep ocean near the poles.
Swanson and Tsonis (2009) suggest that decadal surface
cooling and warming results from a change in energy uptake in the
deep oceans or a change in cloud and
water vapour dynamics.
As the Earth's surface
cools further, cold conditions spread to lower latitudes but polar surface
water and the
deep ocean can not become much colder, and thus the benthic foraminifera record a temperature change smaller than the global average surface temperature change [43].
Over
deep warm
waters (right), hurricanes have the potential to be more powerful because the
ocean surface
cooling is significantly less.
From
deep ocean cooling to
water vapor and many other factors we do not really know what CO2 will do.
In such events, the
oceans become stratified, with warm layers acting as «lid» on
deeper,
cooler water.
Re 99 should be:... Thus, global atmospheric temperatures were higher in the early Eocene (55 - 50 mya) than in the late Cretaceous (70 - 80 mya) while the
deep ocean waters were
cooler in early Eocene than in late Cretaceous.
The warming of the surface of the
ocean is thought to increase stratification within the
water column, preventing the nutrients in the
cool deep ocean from rising to the surface.
This creates an effective barrier preventing bottom warmed
water from reaching the surface (unless you believe in back - conduction of course; — RRB -
Cooling of the
deep oceans is only possible at high latitudes.
1 km ^ 3 magma will warm ~ 1500 km ^ 3
water 1K when
cooling down to
deep ocean water temperatures so it takes roughly 1 million km ^ 3 magma to warm all
ocean water 1K.
Deep ocean water is remarkably uniformly
cool, be it at the tropics or higher latitudes.