The upper 3 meters of the world's oceans hold more heat than the entire atmosphere, so continual ventilation of just 10 meters of
warmer subsurface water will affect the global average for decades.
Intruding water maintains a thick layer of
warmer subsurface water several hundred meters thick.
Studying how that turbulence mixes relatively
warm subsurface water with colder water at the surface.
New research shows how easterly winds in the summer of 2014 caused the anomalously
warm subsurface water of the tropical Pacific — which presages an El Niño event and formed following the early 2014 westerly wind burst — to never discharge poleward, thereby remaining in the tropical Pacific and giving a head start to the developing 2015 - 16 El Niño.
Thus, the static stability of the near - surface water increases and the convective mixing of cold surface water with the relatively
warm subsurface water is reduced, thereby contributing to the reduction of sea surface temperature in the Circumpolar Ocean.
Not exact matches
Scientists say Charon could have been
warm enough to cause the
water ice to melt deep down, creating a
subsurface ocean.
They based it on a
subsurface plume of
warm water, called a Kelvin wave, surging from west to east across the tropical Pacific.
The moon's south pole has strange,
warm fractures, and plumes of liquid
water from a
subsurface ocean many believed was impossible in such a small, cold world.
The search for this
subsurface ocean
warmed up after scientists discovered plumes of mineral - rich
water vapor squirting out of cracks near the south pole.
Closer investigation of these plumes, originating from geysers blasting from polar fissures in Enceladus» icy crust, revealed this
water was coming from a
warm subsurface salty ocean and the
water was laced with hydrocarbons and ammonia, or «many of the ingredients that life would need if it were to start in an environment like that,» Soderblom tells HowStuffWorks.
These episodes occurred toward the end of a period of hundreds of millions of years during which
warm water interacted with
subsurface rocks.
Heat can change ocean dynamics and eventually will increase glacial melting, which is mainly responding to
subsurface water rather than air
warming.
Highly cited Holland et al 2008 (Acceleration of Jakobshavn Isbræ triggered by
warm subsurface ocean
waters) uses 20 year grided dataset of subsurf ocean T from commercial fishing industry.
Clearly,
warmer waters can produce more intense hurricanes, especially if the depth profile also shows
warming in the
subsurface layers.
Arctic
subsurface waters are also
warmer than normal, meaning that ice formation over the winter will be lower than usual.
And what happens to all of the
subsurface warm water that had shifted east during the El Niño and had remained below the surface.
But again, I have to ask a question that you have not answered: How does the heat trapped by CO2 at the surface skin
warm the
subsurface ocean
waters since it is widely acknowledged that the infrared heat from CO2 can't penetrate into the ocean itself?
The results suggest that
warm Atlantic
water never ceased to flow into the Nordic seas during the glacial period; inflow at the surface during the Holocene and
warm interstadials changed to
subsurface and intermediate inflow during cold stadials.
Let's see — a negative SAM --(http://curriculum.pmartineau.webfactional.com/monitoring-southern-hemisphere-stratospheric-vortex-fluctuations-and-tropospheric-coupling/)-- pushes cold
water along the Peruvian Current to the Nino1 +2 zone dissipating the
warm surface mixed layer and allowing cold
subsurface upwelling.
dana1981 - An additional part of that correction is that the deeper
subsurface Antarctic
waters are (relatively)
warmer than surface
waters, not colder as stated in the OP.
The
warm water and calm winds of this periodic Pacific tropical condition are «a big way to get
subsurface heat back to the surface.»
The temperature of the
water below the surface remained above - average, as the large area of
warmer - than - average
subsurface waters continued to move slowly to the east (a downwelling Kelvin wave).
Because solar heating has declined and (according to the IPCC) added CO2 has little impact on heating tropical
waters as discussed in part 2,
subsurface heat should decline and future ventilations will not cause a resumption in a
warming trend.
Then, as the La Nina of 1998/99/00 / 01 progressed, the trade winds, Pacific Equatorial Currents, and a phenomenon known as a Rossby wave returned the remaining surface and
subsurface warm water to the western Pacific.
The layer of
warm surface
water that was blown west is then replaced by cooler
water from the
subsurface, cooling the entire tropical Pacific.
After the
warm surface
waters have been stripped and pumped poleward by the wind, the
subsurface waters are cooler than before.
Warm surface and subsurface waters in the west Pacific warm pool provide the fuel for El Niños, so, as you noted, there has to be warm water for an El Niño to f
Warm surface and
subsurface waters in the west Pacific
warm pool provide the fuel for El Niños, so, as you noted, there has to be warm water for an El Niño to f
warm pool provide the fuel for El Niños, so, as you noted, there has to be
warm water for an El Niño to f
warm water for an El Niño to form.
It does that by pumping
warm water from the surface Pacific to the poles and replacing it with cooler
subsurface water.
Localized rapid
warming of West Antarctic
subsurface waters by remote winds (Nature Climate Change)
Warming of surface ocean
waters is well known, but how the
subsurface waters are changing is less clear.
The study found that the Pacific Ocean is the main source of the
subsurface warm water but some of these
waters have already been pushed to the Indian Ocean.
Reduced equatorial cloud cover during La Nina (due to the cooler sea surface temperature), combined with the strong upwelling (Ekman suction) in the eastern equatorial Pacific, does indeed lead to greater
warming of the ocean - because it's bringing cool
subsurface water to the surface, where it can be heated by the sun.
Based on discussions with my colleagues Rong Zhang and Mike Winton, this seems to be a consequence of an AMOC (Atlantic Meridional Overturning Circulation) which builds in strength when the aerosol cooling is strong, trying to balance a part of the cooling at the surface with
warm waters advected in from the tropics, but also — by a process that is not particularly straightforward — cools the
subsurface waters.