Sentences with phrase «equatorward circulation»

The waters that underlie the near - surface subtropical waters have freshened due to equatorward circulation of the freshened subpolar surface waters; in particular, the fresh intermediate water layer (at ~ 1,000 m) in the SH has freshened in both the Atlantic and Pacific Oceans.

Not exact matches

Where the poleward & equatorward currents of this intensified circulation converge — the centre of the gyres — surface water is pumped downwards into the ocean interior in a process known as Ekman pumping.

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).

I note that the subtropical arid zone tends to be located equatorward of about 30 degrees, subject to various modifications due to circulation and hemispheric asymmetry and whatnot.

The Atlantic Meridional Overturning Circulation (AMOC)- the transport of warm tropical surface water northward - is indeed propelled by dense water sinking in the North Atlantic and travelling equatorward in the deeper layers, but it also has a wind - driven component to it.

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.

The circulation pattern described above — ascent in the equatorial trough, poleward movement in the upper troposphere, descent in the subtropical ridges, and equatorward movement in the trade winds — is in effect a direct heat engine, which meteorologists call the Hadley cell.

At high latitudes the upwelling brings air rich in the heavy molecular constituents N2 and O2 to high altitudes and the circulation carries this molecular - rich air to midlatitudes, especially in the summer hemisphere, where the mean meridional circulation is already equatorward.

The surface katabatic wind regime, directed equatorwards and down the Antarctic coastal escarpment, closes the lower branch of the circulation (Parish and Bromwich 2007).

The air circulation systems move latitudinally poleward or equatorward depending on whether there is net cooling or warming of the air at a gradual if variable rate all the time and climate shifts in any given location depend mainly on the changing position of that location in relation to the latitudinal position of the major air circulation systems.

The thing is that as regards the sequence of observed events leading to changes in tropospheric temperature trends and the cyclical poleward and equatorward shifts in the air circulation systems the NCM is pretty robust.

xii) All regional climate changes are a result of movement in relation to the locally dominant air circulation systems which move cyclically poleward and equatorward.

It says nothing about real world events since then which, despite increasing ghgs, have gone into reverse with a cessation of stratospheric cooling and a return back equatorward of the air circulation systems.

The air circulation systems in both hemispheres move back equatorward and the ITCZ moves nearer the equator as the speed of the hydrological cycle decreases due to the warming stratosphere reducing the temperature differential between stratosphere and surface.

By AO being» stronger» I mean «negative» because it is the negative phase that pushes the air circulation systems equatorward.

Thus as sea ice expands in a cooler climate, the high - latitude oceanic heat loss to the atmosphere is inhibited, the thermohaline circulation weakens, and the sinking regions move equatorward, leading to a shallower and weaker deep circulation.