If there was more cloud forming ions, there should be more clouds over the ocean which should over time result in
colder ocean surface temperatures.
However,
the colder ocean surface reduces upward radiative, sensible and latent heat fluxes, thus causing a large (∼ 50 W m − 2) increase in energy into the North Atlantic and a substantial but smaller flux into the Southern Ocean (Fig. 8c).
La Niña — the weather pattern that causes unusually
cold ocean surface temperatures in the eastern Pacific — has been blamed as the immediate culprit.
During La Niña events (with
cold ocean surface) the ocean absorbs additional heat that it releases during El Niño events (when the ocean surface is warm).
Not exact matches
For a rope cloud to form, the leading edge of the
cold air mass must be advancing straight and steady, which can happen only if it is flowing over a smooth, flat
surface like the
ocean.
The ongoing La Niña pattern, where there are
colder than normal sea
surface temperatures in the central and eastern equatorial Pacific
Ocean, favors these types of conditions.
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.
And around Antarctica, where even the
surface ocean water is already quite
cold and dense, some of that water in the
ocean depths, which is also carbon rich, eventually warmed enough so that it became less dense than the water above it.
«We're finding planets with
ocean that, although
cold at the
surface, are likely warm at the bottom.
The fog is a gift of the Pacific
Ocean's California Current where winds create upwellings that bring
cold, deep, nutrient - rich waters to the
surface.
Today,
cold water sinks near the Arctic and flows deep below the
surface of the Atlantic toward the southern
oceans, where it rises up.
Whale sharks that make lengthy dives into the
cold ocean depths to forage tend to spend a lot of time at the
surface warming up afterward, a new study suggests.
Co-author of the study Dr Wim Degruyter, from Cardiff University's School of Earth and
Ocean Sciences, said: «Our current understanding tells us that hot magma can be injected from Earth's lower crust into
colder surroundings near the
surface.
The visualization shows how the 1997 event started from
colder - than - average sea
surface temperatures — but the 2015 event started with warmer - than - average temperatures not only in the Pacific but also in in the Atlantic and Indian
Oceans.
El Nino's mass of warm water puts a lid on the normal currents of
cold, deep water that typically rise to the
surface along the equator and off the coast of Chile and Peru, said Stephanie Uz,
ocean scientist at Goddard Space Flight Center in Greenbelt, Maryland.
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.
Ocean Thermal Energy Conversion A technology using the temperature difference between cold, deep ocean waters and warmer surface waters to generate electri
Ocean Thermal Energy Conversion A technology using the temperature difference between
cold, deep
ocean waters and warmer surface waters to generate electri
ocean waters and warmer
surface waters to generate electricity.
The researchers found that during glacial periods when the atmosphere was
colder and sea ice was far more extensive, deep
ocean waters came to the
surface much further north of the Antarctic continent than they do today.
At that time, changes in atmospheric - oceanic circulation led to a stratification in the
ocean with a
cold layer at the
surface and a warm layer below.
«
Cold, deep water from this little area of the Nordic seas, less than 1 % of the global
ocean, travels the entire planet and returns as warm
surface water.
When that
cold, fresh water enters the
ocean, it forms an extra-chilly layer on the
ocean surface around the continent.
About 19 months after the wind churned the
ocean, cycling warm deep waters upward and sending the
cold surface waters down, the Totten ice shelf was noticeably thinner and had sped up.
A low - altitude flow of warm, moist air from an
ocean area combined with a flow of
cold, dry polar air high up creates maximum instability, which means that parcels of air heated near the
surface rise rapidly, creating powerful updrafts.
This moves water away from the coast, causing upwellings that bring
cold, nutrient - rich water from the
ocean floor to the
surface, where it feeds innumerable microorganisms and algae.
For example, an exceptionally
cold winter in the North Pacific would allow the
ocean surface to soak up a large amount of oxygen.
«In the past this extensive warmth was well isolated from the
surface layers and ice by a fresh
cold layer... Our moorings demonstrated that this layer disappeared in 2013 - 14 and 2014 - 15 winters, which has never been observed of the Arctic
Ocean before,» said Polyakov.
Then
colder water is pumped from 800 to 1,000 meters below the
ocean surface to condense the steam back into liquid form.
Underneath this layer lies
cold ocean water, and the Ekman pumping reaches sufficients depths in the east to bring some of this up to the
surface.
With the removal of the warm
surface waters, an upwelling current is created in the east Pacific
Ocean, bringing
cold water up from deeper levels.
There is also a contribution of excess atmospheric CO2 absorption introduced to deep - water masses from dense,
cold CO2 - rich
surface waters at downwelling sites (e.g., North Atlantic), which then move through the
oceans via meridional overturning circulation.
During normal conditions, trade winds blow to the west across the tropical Pacific
Ocean, piling up warm
surface water in the western Pacific, and
cold, deeper water rises up, or upwells, off the west coast of South America.
The research published in Nature Communications found that in the past, when
ocean temperatures around Antarctica became more layered - with a warm layer of water below a
cold surface layer - ice sheets and glaciers melted much faster than when the cool and warm layers mixed more easily.
The accelerating melting of land ice into the sea makes the
surface of the
ocean around Antarctica
colder, less salty and more easily frozen, leading to extensive sea ice in some areas.
CO2 is more soluble in
colder than in warmer waters; therefore, changes in
surface and deep
ocean temperature have the potential to alter atmospheric CO2.
If the craft were to crash on the
surface of a
cold moon like Enceladus, the RTGs could easily thaw a path through tens of kilometers of ice, and plop down into the liquid water
ocean beneath, though this might take a long time.
A well - known issue with LGM proxies is that the most abundant type of proxy data, using the species composition of tiny marine organisms called foraminifera, probably underestimates sea
surface cooling over vast stretches of the tropical
oceans; other methods like alkenone and Mg / Ca ratios give
colder temperatures (but aren't all coherent either).
The temperature is very
cold, and the
surface of this gigantic planet is an
ocean of liquid hydrogen that could be as much as 10,000 miles deep.
La Niña is indicated by anomalously
cold sea -
surface temperatures in the equatorial Pacific
Ocean.
This layer of
cold, fresh water on the
ocean surface freezes easily [10].
Cooling sea -
surface temperatures over the tropical Pacific
Ocean — part of a natural warm and
cold cycle — may explain why global average temperatures have stabilized in recent years, even as greenhouse gas emissions have been warming the planet.
If you've got Neptune in your movie, then there had better be a scene of an inky,
cold, vast
ocean surface being broken by Poseidon's trident before giving way to the colossal king of the seas.
Upwelling sucks
cold nutrient - rich water that normally lies at the bottom of the
ocean to the
surface, providing food for hundreds of species.
JacquesLB (# 8)-- your argument only explains why the bottom of the
ocean is not
colder than it is, or indeed frozen at the bottom —
colder water heads upwards and freezes at the
surface.
Think of what would happen if you could pump
cold deep water up to the
surface, increasing the air / sea temperature gradient and warming the water; that would give you an anomalously large
ocean heat uptake.
We use some of the power to spread the
cold water over the
surface so that it does not sink below the layer where phytoplankton convert dissolved CO2 into organic matter that increases the mass of their bodies to feed other
ocean creatures.
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?
When upwelling brings
cold water to the
ocean's
surface, cooling the atmosphere, where is that heat lost from the atmosphere «hiding»?
Be thankful that the we are insulated from the huge volume of
cold waters that comprise the
ocean, because if it ever became far more mixed with the
surface layers we would plunge into permanent glaciation.
Thicker ice sheets can be more resistant to melting by having
colder surfaces (but also depress the crust more, so that when melting occurs, it may leave
ocean instead of land (isostatic adjustment being a slow process — from memory, a timescale of ~ 15,000 years?)
Pete Best, If you have more
cold water upwelling than normal, that is that much more heat going into the
ocean just to maintain the
surface temperature.