Once the posts explaining the wind -
driven ocean circulation and deep ocean warming are completed, it will be definitely worthwhile explaining how all the pieces of the puzzle fit together.
Warming the ocean leads to changes in atmospheric circulation, and the existing heat distributed in the ocean, which changes the wind -
driven ocean circulation.
R Gates - Increased heat transport into the deep ocean is broadly consistent with what is known about the wind -
driven ocean circulation.
The active wind -
driven ocean circulation should have drawn down a lot of extra heat into the ocean via the subtropical gyres.
When this wind -
driven ocean circulation moves into its sluggish phase (the positive phase of the Interdecadal Pacific Oscillation [IPO]-RRB-, surface warming is likely rise abruptly.
When the wind -
driven ocean circulation is intense, such as during the negative phase of the IPO & La Nina, there is strong upwelling of cold deep water along the equator, and along the eastern coasts of the continents.
The Zhang & McPhadden papers do indeed highlight the spin - down and then spin - up of the wind -
driven ocean circulation, but one place to start is: Interaction between the Subtropical and Equatorial Ocean Circulations: The Subtropical Cell -(McCreary & Lu 1994).
When the tropical easterly trade winds strengthen, as they have from the year 2000 onwards, this whole wind -
driven ocean circulation becomes more vigorous, the South Pacific subtropical gyre spins up, and the western arm of the gyre exports more tropical water through the Indonesian archipelago into the Indian Ocean.
Short - term variations in ocean heat uptake, such as the anomalous deep ocean warming of late, are due to changes in the vertical & horizontal distribution of heat in the ocean — mostly the wind -
driven ocean circulation.
This is a result of a weaker wind -
driven ocean circulation, when a large decrease in heat transported to the deep ocean allows the surface ocean to warm quickly, and this in turn raises global surface temperatures.
This deep ocean warming in the model occurred during negative phases of the Interdecadal Pacific Oscillation (IPO), an index of the mean state of the north and south Pacific Ocean, and was most likely in response to intensification of the wind -
driven ocean circulation.
This is to be expected because the spin - up of the wind -
driven ocean circulation speeds up the currents (Ekman transport) which carry heat out of the tropics in the near - surface layers toward the subtropical ocean gyres.
«Formation of coastal sea ice in North Pacific
drives ocean circulation, climate: New understanding of changes in North Pacific ocean circulation over the past 1.2 million years could lead to better global climate models.»
Study co-author Katy Sheen, a Postdoctoral Research Fellow from Ocean and Earth Science at the University of Southampton, says: «These findings will help us to understand the processes that
drive the ocean circulation and mixing so that we can better predict how our Earth system will respond to the increased levels of carbon dioxide that we have released into the atmosphere.»
Its measurements of ocean saltiness will also help scientists understand how changes in salinity affect the deep currents that
drive ocean circulation.
The question became part of a long - running debate over what mainly
drove ocean circulation: was it differences in density, whether due to cold or salt, or was it the steady push of winds?
Therefore, they sought an answer in terms of the atmospheric flow pattern that
drives ocean circulation and results in the advection of warm water into the northeastern North Atlantic.
Not exact matches
That wind -
driven circulation change leads to cooler
ocean temperatures on the surface of the eastern Pacific, and more heat being mixed in and stored in the western Pacific down to about 300 meters (984 feet) deep, said England.
They also knew the behavior of the troposphere influences the
circulation patterns of the
oceans, which, in turn,
drive climate.
Thermohaline
circulation, also known as the
ocean's conveyor belt, refers to the deep
ocean density -
driven ocean basin currents.
Ongoing changes in
ocean circulation patterns, which are helping to
drive warm water from other parts of the sea closer to the Antarctic continent, are also believed to be a major factor.
This would shut down a global
ocean circulation system that is
driven by dense, salty water falling to the bottom of the north Atlantic and that ultimately produces the Gulf Stream.
Because of the clockwise nature of
ocean circulation around Greenland, most of the freshwater increase, up to 70 percent, is being
driven toward the Labrador Sea, magnifying its impact and increasing the possibility of significant effects on the AMOC, said Qian Yang, the paper's first author and a PhD student at USF whose dissertation, in part, includes this research.
The formation of coastal sea ice, seen here in the Arctic
Ocean, plays an important role in
driving «overturning
circulation» in the North Pacific
Ocean.
«Hydrothermal siphon»
drives water
circulation through seafloor: New study explains previous observations of
ocean water flowing through the seafloor from one seamount to another.»
Climatologists have suggested that the winds, known as the Greenland tip jet, could be a key force in
driving the world's climate and the global
ocean circulation by pushing cold, dense water to the
ocean floor and triggering the thermohaline
circulation.
They were able to show that episodes of extinction coincided with pulses of
ocean anoxia,
driven by changes in
ocean circulation and nutrient levels.
Lead author of the study, Dr Caroline Eakin, Research Fellow in
Ocean and Earth Science at the University of Southampton, said: «The process of consuming old seafloor at subduction zones, where great slabs of oceanic material are swallowed up,
drives circulation in the Earth's interior and keeps the planet going strong.
They will look for evidence of temperature changes caused by
ocean circulation patterns in both the North Atlantic and tropical Pacific
Oceans, which
drive precipitation in Tibet as well as the Indian monsoons.
The Laurentide Ice Sheet, the major
driving force for
ocean circulation during the glacials, has also disappeared.
Ocean circulation drives the movement of warm and cold waters around the world, so it is essential to storing and regulating heat and plays a key role in Earth's temperature and climate.
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.
Quick recovery is consistent with the Southern
Ocean - centric picture of the global overturning circulation (Fig. 4; Talley, 2013), as the Southern Ocean meridional overturning circulation (SMOC), driven by AABW formation, responds to change in the vertical stability of the ocean column near Antarctica (Sect. 3.7) and the ocean mixed layer and sea ice have limited thermal ine
Ocean - centric picture of the global overturning
circulation (Fig. 4; Talley, 2013), as the Southern
Ocean meridional overturning circulation (SMOC), driven by AABW formation, responds to change in the vertical stability of the ocean column near Antarctica (Sect. 3.7) and the ocean mixed layer and sea ice have limited thermal ine
Ocean meridional overturning
circulation (SMOC),
driven by AABW formation, responds to change in the vertical stability of the
ocean column near Antarctica (Sect. 3.7) and the ocean mixed layer and sea ice have limited thermal ine
ocean column near Antarctica (Sect. 3.7) and the
ocean mixed layer and sea ice have limited thermal ine
ocean mixed layer and sea ice have limited thermal inertia.
It is widely believed that
ocean circulation drives the phase changes of the AMO by controlling
ocean heat content.
In an ensemble of fully coupled atmosphere -
ocean general
circulation model (AOGCM) simulations of the late Paleocene and early Eocene, we identify such a
circulation -
driven enhanced intermediate - water warming.
Ice shelves are important, because they play a role in the stability of the Antarctic Ice Sheet and the ice sheet's mass balance, and are important for
ocean stratification and bottom water formation; this helps
drive the world's thermohaline
circulation.
A water based system doesn't achieve much, as the
oceans participate in weather and climate, but aren't the primary
driving forces, which are global atmospheric
circulation patterns and greenhouse gases etc..
That matters because the trickiest part of global climate models appears to be how they handle
ocean - atmosphere interactions, and I really have no idea how well they link changes in local wind -
driven upwelling to the net thermohaline
circulation.
Thus, some heat gets converted to kinetic energy, but that gets converted back to heat, either by viscosity or by thermally - indirect
circulations that produce APE while pulling heat downward in the process (LHSO: Ferrel cell (
driven by extratropical storm track activity), Planetary - scale overturning in the stratosphere and mesosphere (includes Brewer - Dobson
circulation (I'm not sure if the whole thing is the Brewer - Dobson
circulation or if only part of it is)-RRB-, some motions in the
ocean; LVO: wind
driven mixing of the boundary layer and of the upper
ocean (though mixing itself tends to destroy the APE that the kinetic energy would create by forcing heat downward)-RRB-.
A water based system doesn't achieve much, as the
oceans participate in weather and climate, but aren't the primary
driving forces, which are global atmospheric
circulation patterns and greenhouse gases etc..
It's what
drives the atmospheric
circulation and the
ocean currents that mix the upper warm layers of the
ocean with the deeper colder layers, and vice versa.
Solar data seems to have such a millenarian cycle that could
drive a large internal variability in the
ocean circulation, for example.
The jet stream off the East Coast of the United States controls an important climate pattern in the Atlantic... «The North Atlantic Oscillation is really
driving these changes in
ocean circulation,» said Gerald McCarthy, lead study author and an oceanographer at the University of Southampton in the United Kingdom....
On the other hand, the AMO hypothesis asserts that natural changes in the deep water
circulation of the Atlantic
Ocean drive hurricane season SST resulting in changes to both hurricane activity and GT.
flow in the upper 1,000 meters of
ocean driven by global winds N. and S. hemispheres each have two
circulations caused by the Coriolis Effect clockwise.
The cloud data says something quite clearly whether it's cosmic radiation or
ocean and atmosphere
circulation variability
driven top down UV / ozone modulation.
This project used a compiled set of emission and forcing scenarios called the Representative Concentration Pathways (RCP) to
drive a group of the most complex climate available, so - called Atmosphere
Ocean General
Circulation Models.
The temperature of the troposphere is constantly being affected by variations in the rate of energy flow from the
oceans driven by internal
ocean variability, possibly caused by temperature fluctuations along the horizontal route of the thermohaline
circulation and by variations in energy flow from the sun that affect the size (and thus density) of the atmosphere and the rate of energy loss to space.
Oceanic currents are largely
driven by the surface wind stress; hence the large - scale atmospheric
circulation is important to understanding the
ocean circulation.
Walker
Circulation - Direct thermally driven zonal overturning circulation in the atmosphere over the tropical Pacific Ocean, with rising air in the western and sinking air in the easte
Circulation - Direct thermally
driven zonal overturning
circulation in the atmosphere over the tropical Pacific Ocean, with rising air in the western and sinking air in the easte
circulation in the atmosphere over the tropical Pacific
Ocean, with rising air in the western and sinking air in the eastern Pacific.