Sentences with phrase «overturning circulation of the ocean»

[Response: This is basically a shorthand for the overturning circulation of the oceans (i.e. what you would see if you were looking at the oceans side on).

States that other feedbacks likely to emerge are those in which key processes include surface fluxes of trace gases, changes in the distribution of vegetation, changes in surface soil moisture, changes in atmospheric water vapor arising from higher temperatures and greater areas of open ocean, impacts of Arctic freshwater fluxes on the meridional overturning circulation of the ocean, and changes in Arctic clouds resulting from changes in water vapor content

Not exact matches

The simulations suggest that over decades, these warming events dramatically perturb the ocean surface, affecting the flow of the Atlantic Meridional Overturning Circulation, a system of currents that acts like a conveyor belt moving water around the planet.

«We found the Atlantic Meridional Overturning Circulation has an «Achilles heel,» a vulnerable spot in the North Atlantic Ocean in the region south of Greenland.»

Lozier (p. 1507) discusses how recent studies have challenged our view of large - scale ocean circulation as a simple conveyor belt, by revealing a more complex and nuanced system that reflects the effects of ocean eddies and surface atmospheric winds on the structure and variability of the ocean's overturning.

«This finding is a major advance in understanding the natural carbon cycle, gained by applying a new understanding about how the «overturning circulation» of the Southern Ocean works,» said lead author Dr Andrew J Watson from the University of Exeter.

«Melting Greenland ice sheet may affect global ocean circulation, future climate: University of South Florida and international scientists find influx of freshwater could disrupt the Atlantic Meridional Overturning Circulation, an important component of global ocean circulatcirculation, future climate: University of South Florida and international scientists find influx of freshwater could disrupt the Atlantic Meridional Overturning Circulation, an important component of global ocean circulatCirculation, an important component of global ocean circulationcirculation.»

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.

The Southern Ocean plays a pivotal role in the global overturning circulation, a system of surface and deep currents linking all oceans and one of the fundamental determinants of the planet's climate.

«Such a slowdown is consistent with the projected effects of anthropogenic climate change, where warming and freshening of the surface ocean from melting ice caps leads to weaker overturning circulation,» DeVries explained.

«The weaker overturning circulation brings less naturally CO2 - rich deep waters to the surface, which limits how much of that gas in the deep ocean escapes to the atmosphere.

For decades, research on climate variations in the Atlantic has focused almost exclusively on the role of ocean circulation as the main driver, specifically the Atlantic Meridional Overturning Circulation, which carries warm water north in the upper layers of the ocean and cold water south in lower layers like a large concirculation as the main driver, specifically the Atlantic Meridional Overturning Circulation, which carries warm water north in the upper layers of the ocean and cold water south in lower layers like a large conCirculation, which carries warm water north in the upper layers of the ocean and cold water south in lower layers like a large conveyor belt.

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.

Reduced Atlantic Ocean overturning circulation will initially lead to lower O2 levels at the deep seafloor, and may alter the intensity of Pacific and Indian Ocean OMZs (Schmittner et al., 2007).

RE # 39 (sorry for being off - topic), there are still more threats to plankton from GW, according to a NATURE article just out («Decline of the marine ecosystem caused by a reduction in the Atlantic overturning circulation,» Schmittner, Vol 434 No 7033, Mar 31, p. 628): If the Atlantic ocean conveyor is disrupted due to freshwater entering, then the nutrients for plankton will not be churned up, perhaps reducing plankton by half.

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 ineOcean - 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 ineOcean 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 ineocean column near Antarctica (Sect. 3.7) and the ocean mixed layer and sea ice have limited thermal ineocean mixed layer and sea ice have limited thermal inertia.

For years, perhaps decades, Gray has been ascribing all sorts of climate changes and hurricane cycles to fluctuations in the Thermohaline Circulation (THC), an overturning circulation in the Atlantic ocean associated with formation of deep water in the NortCirculation (THC), an overturning circulation in the Atlantic ocean associated with formation of deep water in the Nortcirculation in the Atlantic ocean associated with formation of deep water in the North Atlantic.

Suppression of ocean circulation overturning decreases the ocean heat flux available to melt ice, leading to an increase in net ice production [13].

A new study in Science Advances by Wei Liu and colleagues at the Scripps Institution of Oceanography in San Diego and the University of Wisconsin - Madison has important implications for the future stability of the overturning circulation in the Atlantic Ocean.

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-.

The deep ocean and surface water don't overturn because of differences in density, so the exchange is via global circulation.

Further detail: Thermohaline circulation or meridional overturning circulation (THC / MOC) act on different parts of the oceans, at different times of the year, at different amplitudes and frequencies.

Stronger vertical mixing invigorates the MOC [Meridonal Overturning Circulation] by an order of magnitude, increases ocean heat transport by 50 — 100 %, reduces the zonal mean equator - to - pole temperature gradients by up to 6 °C, lowers tropical peak terrestrial temperatures by up to 6 °C, and warms high - latitude oceans by up to 10 °C.»

Farneti, R., S.M. Downes, S.M. Griffies, S.J. Marsland, E. Behrens, M. Bentsen, D. Bi, A. Biastoch, C. Böning, A. Bozec, V.M. Canuto, E. Chassignet, G. Danabasoglu, S. Danilov, N. Diansky, H. Drange, P.G. Fogli, A. Gusev, R.W. Hallberg, A. Howard, M. Ilicak, T. Jung, M. Kelley, W.G. Large, A. Leboissetier, M. Long, J. Lu, S. Masina, A. Mishra, A. Navarra, A.J. George Nurser, L. Patara, B.L. Samuels, D. Sidorenko, H. Tsujino, P. Uotila, Q. Wang, and S.G. Yeager, 2015: An assessment of Antarctic Circumpolar Current and Southern Ocean Meridional Overturning Circulation during 1958 - 2007 in a suite of interannual CORE - II simulations.

In recent years research tied the Bølling - Allerød warming to the release of heat from warm waters originating from the deep North Atlantic Ocean, possibly triggered by a strengthening of the Atlantic meridional overturning circulation (AMOC) at the time.

On the relationship between the meridional overturning circulation, alongshore wind stress, and United States East Coast sea level in the Community Earth System Model Large Ensemble (Journal of Geophysical Research - Oceans)

Additionally, the Atlantic Ocean is the only basin in which there is an equatorward warm surface current (part of the Meridional Overturning Circulation) and this ultimately carries heat to the North Atlantic - where it sinks.

It is further shown that the warm phase of the AMO corresponds to a strengthening of the Atlantic meridional overturning circulation (AMOC) and a weakening of the Atlantic subtropical cell (STC), which both induce an anomalous northward current in the TNA subsurface ocean.

Some of the warm water would be subducted by Atlantic Meridional Overturning Circulation / Thermohaline Circulation, some would be carried by ocean currents into the Arctic Ocean where it would melt sea ice, and the remainder would be spun southward by the North Atlantic gyre toward the tropics so it could be warmed more by the effects of the slower - than - normal trade wocean currents into the Arctic Ocean where it would melt sea ice, and the remainder would be spun southward by the North Atlantic gyre toward the tropics so it could be warmed more by the effects of the slower - than - normal trade wOcean where it would melt sea ice, and the remainder would be spun southward by the North Atlantic gyre toward the tropics so it could be warmed more by the effects of the slower - than - normal trade winds.

MOC stands for Meridional Overturning Circulation, and although it refers to the same global pattern of ocean currents («conveyor belt») as the thermohaline circulation, this story shows why actually MOC is the more accurate name, as it is not just... ContinuCirculation, and although it refers to the same global pattern of ocean currents («conveyor belt») as the thermohaline circulation, this story shows why actually MOC is the more accurate name, as it is not just... Continucirculation, this story shows why actually MOC is the more accurate name, as it is not just... Continue reading →

The main conclusion of the study is that by modulating meridional overturning circulation Arctic sea ice can play an active role in ocean and climate change.

Recent research at Reading University and elsewhere indicates a slowing of a deep ocean circulation system in the North Atlantic, known as the Atlantic Meridional Overturning circulation.

«The authors write that «the notorious tropical bias problem in climate simulations of global coupled general circulation models manifests itself particularly strongly in the tropical Atlantic,»... they state that «the climate bias problem is still so severe that one of the most basic features of the equatorial Atlantic Ocean — the eastward shoaling thermocline — can not be reproduced by most of the IPCC assessment report models,... as they describe it, «show that the bias in the eastern equatorial Atlantic has a major effect on sea - surface temperature (SST) response to a rapid change in the Atlantic Meridional Overturning Circulation (AMcirculation models manifests itself particularly strongly in the tropical Atlantic,»... they state that «the climate bias problem is still so severe that one of the most basic features of the equatorial Atlantic Ocean — the eastward shoaling thermocline — can not be reproduced by most of the IPCC assessment report models,... as they describe it, «show that the bias in the eastern equatorial Atlantic has a major effect on sea - surface temperature (SST) response to a rapid change in the Atlantic Meridional Overturning Circulation (AMCirculation (AMOC).»

An analysis of two coupled atmosphere - ocean general circulation models control runs (UK Met Office HadCM3 and NOAA GFDL CM2.1) agree with the shorter and longer time - scales of Atlantic Meridional Overturning Circulation (AMOC) and temperature fluctuations with periodicities close to thoscirculation models control runs (UK Met Office HadCM3 and NOAA GFDL CM2.1) agree with the shorter and longer time - scales of Atlantic Meridional Overturning Circulation (AMOC) and temperature fluctuations with periodicities close to thosCirculation (AMOC) and temperature fluctuations with periodicities close to those observed.

Strong decadal climate variability is a signature of the subpolar North Atlantic Ocean, which is also home to the global overturning circulation.

The impact of changes in the ocean overturning circulation on climate has become a hot topic today as global temperatures rise and melting sea ice and glaciers add freshwater to the North Atlantic.

In a recent paper, Sanchez - Franks and Zhang show that the underlying physical driver for the decadal variability in the Gulf Stream path and the regional biogeochemical cycling is linked to the low - frequency variability of the large - scale ocean circulation in the Atlantic, also known as Atlantic meridional overturning circulation (AMOC).

Evidence from the Pacific and the Atlantic suggests that nutrient supply to the upper productive layer of the ocean is declining due to reductions in the Meridional Overturning Circulation and upwelling (McPhaden and Zhang, 2002; Curry and Mauritzen, 2005) and changes in the deposition of wind - borne nutrients.

The chemical tracers show that the speed of the ocean overturning circulation changed first and that a change in sea surface temperature followed.

Slow variations in upper ocean heat content that have been observed in the subpolar and marginal ice zone regions of the Atlantic since the mid-twentieth century are thought to be related to changes in the strength of the Atlantic Meridional Overturning Circulation (AMOC).

The pre-Holocene climate shifts seem to be well accounted for by dynamics of glacial meltoff, freshwater discharge, and the impact on the ocean circulation... all of which is less of an issue in an initially warm climate, and the AR5 generation models give no indication that the overturning circulation will be significantly impacted over the coming century.

While the circulation of the Atlantic Ocean has a complex three - dimensional spatial structure, the zonally integrated flow in the basin, referred to as the Atlantic Meridional Overturning Circulation (AMOC), is largely responsible for the net northward oceanic heat transport on climate - relevant circulation of the Atlantic Ocean has a complex three - dimensional spatial structure, the zonally integrated flow in the basin, referred to as the Atlantic Meridional Overturning Circulation (AMOC), is largely responsible for the net northward oceanic heat transport on climate - relevant Circulation (AMOC), is largely responsible for the net northward oceanic heat transport on climate - relevant timescales.

Comparison of the Atlantic Meridional Overturning Circulation between 1960 and 2007 in six ocean reanalysis products (Climate Dynamics)

«Changes in basal melting are helping to change the properties of Antarctic bottom water, which is one component of the ocean's overturning circulation,» said author Stan Jacobs, an oceanographer at Columbia University's Lamont - Doherty Earth Observatory in Palisades, N.Y. «In some areas it also impacts ecosystems by driving coastal upwelling, which brings up micronutrients like iron that fuel persistent plankton blooms in the summer.»

Smeed et al 2014 use data from the new Atlantic Ocean current program — the 260 N array — to suggest a link between the North Atlantic Oscillation (NAO)-- the Atlantic arm of the Northern Annular Mode — and the Atlantic Meridional Overturning Circulation (AMOC).

Atlantic Meridional Overturning Circulation A major current in the Atlantic Ocean, characterized by a northward flow of warm, salty water in the upper layers of the Atlantic, and a southward flow of colder water in the deep Atlantic.

Meridional Overturning Circulation includes the action of wind, as well as density changes through differences in temperature and salinity in order to drive the ocean currents.

Salinity in a short time will be equalized at surface and ocean floor where brine overturns and can never be a driver of the thermohaline circulation.

In the Atlantic Ocean, the Gulf Stream is part of what's called the Atlantic Meridional Overturning Circulation, a conveyor belt of ocean water that carries warm water from Florida to Greenland where it cools and sinks to 1000 meters or more before traveling back down the coast to the troOcean, the Gulf Stream is part of what's called the Atlantic Meridional Overturning Circulation, a conveyor belt of ocean water that carries warm water from Florida to Greenland where it cools and sinks to 1000 meters or more before traveling back down the coast to the troocean water that carries warm water from Florida to Greenland where it cools and sinks to 1000 meters or more before traveling back down the coast to the tropics.

Nevertheless, there is some evidence that the AMO, i.e. in fact NA SSTs, might be influenced by variations in the Meridional Overturning Circulation (MOC) of the ocean (Delworth and Mann 2000, Vellinga and Wu 2004, Knight et al. 2005, Latif et al. 2004).