Sentences with phrase «in poleward heat transport»

We find that an increase in poleward heat transport by the tropical ocean results in a warming of the extra-tropics, relatively little change in the tropical temperatures, moistening of the subtropical dry zones, and partial but incomplete compensation of the planetary - scale energy transport by the atmosphere.

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

Suppose that there has been a multi-century increase in the poleward heat transport in the oceans due to internal variability, which warms the poles, reduces ice extent and albedos, and thereby warms the planet.

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?

And no, there is no huge plunge in tropical or global surface air temperatures when the ocean circulation spins up because there is a near - compensating decrease in poleward heat transport via the atmospheric circulation.

Not exact matches

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?

Major differences in simulated surface salinities had a significant impact on the calculated poleward heat transports.

Reduction in ice free area, a positive feedback to the atmosphere increases poleward ocean heat transport, a negative feedback for the oceans.

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.

The YD shows strongly up in GRIP but is much less pronounced in the Antarctic cores because interrupting the AMOC turns poleward ocean heat transport on and off causing abrupt NH climate change.

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?

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.

The post 1995 AMO and Arctic warming is the natural response to the decline in solar wind pressure since then, by it increasing negative NAO / AO conditions, and thereby increasing the poleward heat transports.

Models also show that a change in poleward ocean heat transport can create large changes in the climate.

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

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.

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 activitIn 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 activitin the last three decades is due to the negative feedback of increased poleward oceanic heat transport as a result of weaker solar activity.

I missed the part where you mentioned the balance in the AMO and an equal balance in any long term poleward ocean heat transport.

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

Similar to the return flow in a household heating system, these currents transport colder waters into the tropics where they are heated and transported poleward in the western boundary currents.

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.

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.

However, Earth's surface energy balance dictates that net poleward heat transport should be symmetrical in both hemispheres.

Several mechanisms have been hypothesized to explain this reduced temperature gradient, including increased poleward heat transport, decreased ice albedo, and changes in cloud cover (Fedorov et al., 2006).

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.

Most of the observed decline in the latitudinal temperature gradient during the Pliocene can be explained by increased poleward heat transport.

back to the horizontal gradient, if the upper tropospheric thermal wind shear increase is greater than the decrease of the lower layer, then maybe the overall baroclinic instability would be stronger — but currently the upper level eddy circulations do not transport much heat poleward, so would the structure of cyclones change so that a deeper layer of air is involved in the thermal advection, compensating for a weaker temperature gradient?

This is one of the simplest models for the pole - to - equator surface temperature distribution and ice latitude on a spherical planet in the presence of poleward heat transport.

On Earth this happens close to 30 degrees latitude, and poleward of this the heat transport is dominated by mid-latitude eddies rather than being under the wings of a giant overturning circulation (you can still find references to a mid-latitude «Ferrell cell» in textbooks, but this is not a good description of what happens).

Through baroclinic instability, the potential energy associated with temperature gradients is converted into the energy in atmospheric eddies that dominate the heat and angular momentum transport poleward of the subsiding region of the Hadley cell.

Observational and modelling evidence suggest that poleward ocean heat transport (OHT) can vary in response to both natural climate variability and greenhouse warming.