Sentences with phrase «poleward transport of»

There is also an increasing poleward transport of water vapour from lower latitudes.

While the baroclinic systems are efficient in transporting heat, the enormous negative radiative forcing (Fig. 2) associated with these cloud systems seems to undo the poleward transport of heat by the dynamics.

Before 2006, our warm salt subduction mechanism does not allow the Atlantic to cool when its subpolar salinity was increasing, because poleward transport of warm salty water and increasing subpolar subduction are parts of the same mechanism of enhanced AMOC upper - ocean transport.

Conversely, during low solar activity during the Little Ice Age, transport of warm water was reduced by 10 % and Arctic sea ice increased.17 Although it is not a situation I would ever hope for, if history repeats itself, then natural climate dynamics of the past suggest, the current drop in the sun's output will produce a similar cooler climate, and it will likely be detected first as a slow down in the poleward transport of ocean heat.22 Should we prepare for this possibility?

John Wise - it seems to a be natural phenomenon tied to the poleward transport of heat.

Temperatures there are strongly dependent upon poleward transport of heat.

What drives ocean sensitivity is the sun and poleward transport of energy.

Although more research is needed, there is some agreement among oceanographers that, for the entire area north of 30 N latitude, the ocean's poleward transport of heat is the equivalent of about 15 watts per square metre of the earth's surface (W / m2).

Is less poleward transport of heat by the Gulf Stream as the AMOC weakens a positive feedback for global warming, since that energy will escape more slowly in the humid (higher water vapor GHG effect) tropics than near the poles?

Not exact matches

Furthermore, even if the net meridional overturning circulation, which is broader than just the Gulf Stream, slows, that doesn't mean that the poleward heat transport will be reduced, as a warmer wetter atmosphere can also transport a great deal of heat (latent heat) to poleward regions, which seems to be what has been happening.

[Response: The classical (i.e. Stommel) theory of the subtropical gyre requires that the interior equatorward (Sverdrup) transport that takes place everywhere but a narrow strip along the western edge of the basin, precisely balance the poleward transport that takes place in a narrow boundary current along the western edge of the basin.

This paper is an assessment of the current climate poleward heat transport.

Thus, the subtropical gyre circulation is a horizontal circulation with poleward mass transport along the western boundary, and equatorward transport everywhere east of that, and providing no net northward mass transport integrated across the basin (which is what Bryden et al have done).

Changes here have a long term effect, affecting the strength of the north - ward horizontal flow of the Atlantic's upper warm layer, thereby altering the oceanic poleward heat transport and the distribution of sea surface temperature (SST — AMO), the presumed source of the (climate) natural variability.

Also, the overall number of ozone molecules destroyed in a vertical column of air was pretty much the same as the number of molecules transported into this column by the average poleward and downward transport of air in the stratosphere.

In any case, ocean data showed a slight slowing of the poleward water transport, not the increase that the AMO explanation called for.

More recently hurricanes have been implicated as heat pumps responsible for up to 15 % of poleward oceanic heat transport.

RE # 11 The role of hurricanes in the poleward heat transport immediately leads to the question, how is the poleward heat transport divided between atmospheric and oceanic routes?

I would suggest these small aerosols have a large effect on the saturated adiabatic cooling and heating cycles and the transport of water vapor latent heat poleward.

As the ocean circulation takes up the role of transporting heat poleward the atmospheric circulation spins down.

Scientists are still trying to decide how the poleward heat transport will be affected by global warming — but the rapid changes at the poles seem to involve a lot of heat transport into that region via both the atmosphere and the oceans.

Both contribute to poleward energy transport and therefore Western Europe's relatively warm climate, but they are very different and conflating them contributes to public misunderstanding of the climate system.

You have variations in poleward heat transport and a change in the intensity of Sudden Stratospheric Warming events.

Without continents, you might not get any western boundary currents, which could alter the balance of poleward heat transport and really affect the general circulation of the atmosphere.

The cooler Arctic then promoted formation of North Atlantic Deep Water (NADW in the upper frame of Figure 13) as salty Atlantic waters transported poleward cooled and brine rejection increased as more Arctic sea ice formed.

Note that there is also poleward transport in the shallow currents at the western edge of each subtropical ocean gyre - known as western boundary currents.

The vertical transfer of energy is directly proportional to the poleward transport or advection of heat.

If you have faith in the climate models and have any knowledge of what they do with reduced poleward ocean heat transport, then you are expecting cooling unless the AMOC should speed back up.

In our model simulations this weakens the AMOC and poleward ocean heat transport, and diminishes the contribution of ocean heat transport to the reduction of Arctic sea ice extent.

Hence an eastward - directed wind on the poleward side of the subtropical anticyclone would transport the surface layer of the ocean to the south.

The conventional view on the connection between the AMOC and Arctic sea ice is that a weakening of the AMOC should reduce ocean poleward heat transport and, hence, expand sea ice.

They forced the model with CO2 and happened to catch it when it was in the process of increasing poleward ocean heat transport.

Warm currents transport heat from lower latitudes poleward and tend to occur on the western sides of oceans.

It is transported poleward west of the terrain and toward the Equator east of the obstacle.

Put another way, a warmer climate will place greater demands on the atmosphere to transport heat upward and poleward, but this will be done more efficiently, in a smaller number of events that each accomplish more of the required transport.

12: Indigenous Peoples).91, 101 Warming also releases human - caused pollutants, such as poleward - transported mercury and organic pesticides, from thawing permafrost and brings new diseases to Arctic plants and animals, including subsistence food species, posing new health challenges, especially to rural communities.165, 166 Positive health effects of warming include a longer growing season for gardening and agriculture.5, 167

In which case, half of the global warming in the last three decades is due to the negative feedback of increased poleward oceanic heat transport as a result of weaker solar activity.

For example, equatorward - moving weather systems — known as «transient eddies» — fulfill much of the poleward energy export required to balance the net energy input, with the energy transport associated with vertical motion times gross moist stability less important than in the ITCZ.

Examining the role of Greenland and the surrounding area on cyclone development and poleward heat and moisture transports

The Arctic responds strongly through teleconnections controlling the rates of poleward oceanic and atmospheric heat transport.

These oscillations are superimposed on a long term trend of increasing poleward ocean heat transport.

All of the warming since the LIA can easily be explained by increases in poleward ocean heat transport.

The impact of these fluxes on the AMOC was generally small compared to the effect of enhanced poleward atmospheric moisture transport and ocean surface warming; or it was only noticeable in the most extreme scenarios.

Waters moving in the western boundary currents adjacent to the major gyres (North and South Pacific and Atlantic basins and the Indian basin) transport large quantities of heat poleward from the tropics.

To ascertain with confidence the extent to which deep water production impacts the ocean's meridional circulation and hence the ocean's contributions to the global poleward heat flux, continuous measures of trans - basin mass and heat transports are needed.

Because saltier water is denser and thus more likely to sink, the transport of salt poleward into the North Atlantic provides a potentially destabilizing advective feedback to the AMOC (Stommel, 1961); i.e., a reduction in the strength of the AMOC would lead to less salt being transported into the North Atlantic, and hence a further reduction in the AMOC would ensue.

MOCHA array — provide a means to evaluate intergyre connectivity within the North Atlantic and allow for a determination of how and whether deep water mass formation impacts overturning and poleward heat and freshwater transports throughout the North Atlantic.

Additionally, the intensified winds of the mid-latitude westerlies, and a poleward shift of the strongest winds toward the Antarctic Circumpolar Current will also lead to stronger convergence of surface currents, and stronger downward heat transport.

The resumption of poleward heat transport by the THC produced the abrupt and very large NH warming.

However, the mechanism of increased poleward heat transport can not be the only physical mechanism driving the reduced temperature gradient because it is in fact the surface temperature gradient that ultimately drives the flux of heat poleward.