Sentences with phrase «ekman ocean heat transport»

«The Importance of Planetary Rotation Period for Ocean Heat Transport» is published in the journal Astrobiology on Monday, July 21, 2014.

The role of ocean heat transport in the global climate response to projected Arctic sea ice loss.

Gordon, C., et al., 2000: The simulation of SST, sea ice extents and ocean heat transports in a version of the Hadley Centre coupled model without flux adjustments.

•» According to Zhang (2007) thermal expansion in the lower latitude is unlikely because of the reduced salt rejection and upper - ocean density and the enhanced thermohaline stratification tend to suppress convective overturning, leading to a decrease in the upward ocean heat transport and the ocean heat flux available to melt sea ice.

I agree that THC largely determines the amount of ocean heat transport to the North Atlantic, but this affects both sides of the Atlantic, not just Europe.

That is indeed largely the ocean heat transport associated with the THC, in lay - persons terminology often referred to as the Gulf Stream.

Based on transient climate model simulations of glacial - interglacial transitions (rather than «snapshots» of different modeled climate states), Ganopolski and Roche (2009) proposed that in addition to CO2, changes in ocean heat transport provide a critical link between northern and southern hemispheres, able to explain the apparent lag of CO2 behind Antarctic temperature.

3) Can you confirm that the temperature and net flux data for GISS - E2 - R, available via the CMIP5 portals and KNMI Climate Explorer are based on a model corrected to fix the ocean heat transport problem which you identified in the Russel ocean model in your 2014 paper?

To some extent, this is again due to the factors mentioned above, but additionally, the models predict that the North Atlantic as a whole will not warm as fast as the rest of globe (due to both the deep mixed layers in this region which have a large thermal inertia and a mild slowdown in the ocean heat transports).

CO2 concentration was then instantaneously doubled, and the model was integrated to a new equilibrium with unchanged implied ocean heat transport...

c) Both you and Dr Miller remarked in published papers in 2014 that an error had been identified in ocean heat transport in GISS - E2 - R.

A good explanation of the details is provided here: Koll & Abbot (2013)-- Why Tropical Sea Surface Temperature is Insensitive to Ocean Heat Transport Changes.

In CMIP3, an AGCM was coupled to a non-dynamic mixed - layer (slab) ocean model with prescribed ocean heat transport convergence.

There is a tremendous amount of ocean heat transport from both the Pacific and the Atlantic going on in the Arctic.

Significant changes in ice cover and the moisture balance were seen, consistent with the feedbacks believed to be associated with ocean heat transport changes.

How the atmosphere can be coupled to wind - driven ocean heat transport goes back to Klinger and Marotzke (2000) and is described in

By default, water at the surface does not move (a «slab ocean»), but it is also possible to prescribe ocean heat transport or to take wind - driven ocean heat transport in low latitudes into account through a simple one - dimensional model driven by surface winds.

An atmospheric general circulation model coupled to a simple mixed layer ocean was forced with altered implied ocean heat transports during a period of increasing trace gases.

Levine, X. J., and T. Schneider, 2011: Response of the Hadley circulation to climate change in an aquaplanet GCM coupled to a simple representation of ocean heat transport.

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

(As discussed here, the ACC barrier to ocean heat transport is a major reason why Antarctic sea ice has currently increased in contrast to decreasing Arctic sea ice.)

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.»

Sea ice is lost due to increasing ocean heat transport into the arctic and the resulting loss of ice causes the atmosphere to warm.

The difference in the climatological mean June - July - August ocean heat content as measured by the depth of the 20 °C isotherm (in meters) overlaid with corresponding differences in ocean heat transport vectors (W / m) between two numerical climate models with slightly different bathymetries.

The answer is yes if there is internal variability in ocean heat transport according to models.

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.

Dessler (2011) used observational data (such as surface temperature measurements and ARGO ocean temperature) to estimate and corroborate these values, and found that the heating of the climate system through ocean heat transport was 20 times larger than TOA energy flux changes due to cloud cover over the period in question.

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.

This paper would indicate the greatest factor in sea ice extent is ocean heat transport.

I don't really think it is controversial that the change in ocean heat transport will do something.

I think the influence of changes in ocean heat transport and what the scientists say that should cause is good evidence it will actually reverse especially in the context of the drop in 0 - 700m ocean heat content in the N Atlantic.

They find that about 15 percent of the peak ocean heat transport... Read more

Uninitialized simulations of the twentieth century driven by anthropogenic and other external forcings lack the ocean heat transport variations that contributed to the magnitude and spatial patterns of observed sea ice loss.

What do you base your position that the change in ocean heat transport will have no effect?

Combined with my link that indicates the ocean heat transport from the Atlantic to the Arctic had been increasing over that time period.

Considered in isolation, the reduction in ocean heat transport implies a possible moderation in the rate of Arctic sea ice loss in the coming decade.

Because of the limits of ocean heat transport you have «real» thermal inertia, not just heat capacity.

I happen to think ocean heat transport is the primary factor so would consider just a slow down in melt rate an error on the melting side of the argument.

Now that ocean heat transport from the tropics to the N Atlantic has been dropping would you expect the ocean heat transport from the Atlantic to the Arctic to also drop and thus cause a recovery of the sea ice in the Arctic?

Has mostly to do with poleward ocean heat transport.

Reconstructions indicate we may have experienced an increase in ocean heat transport beginning around 1750.

Lucifer, if you look at my references you'll see that ocean heat transport has been going down over the last decade3 and the OHC of the N Atlantic has been decreasing since 2007.

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.

Here, we have shown that this warming was associated and presumably initiated by a major increase in the westerly to south - westerly wind north of Norway leading to enhanced atmospheric and ocean heat transport from the comparatively warm North Atlantic Current through the passage between northern Norway and Spitsbergen into the Barents Sea.»

A commentator on the ClimateAudit thread has asked Gavin Schmidt, in a comment submitted to RealClimate, whether temperature and net flux data for GISS - E2 - R available via the CMIP5 portals and KNMI Climate Explorer are based on a model corrected to fix the ocean heat transport problem.

It has been noted in a five - member multi-model ensemble analysis that, associated with the changes in temperature of the upper ocean in Figure 10.7, the tropical Pacific Ocean heat transport remains nearly constant with increasing greenhouse gases due to the compensation of the subtropical cells and the horizontal gyre variations, even as the subtropical cells change in response to changes in the trade winds (Hazeleger, 2005).

Associated with the warming, there has been an enhanced atmospheric hydrological cycle in the Southern Ocean that results in an increase of the Antarctic sea ice for the past three decades through the reduced upward ocean heat transport and increased snowfall.

Kind of like mentioning the impact of ocean heat transport and the inherent lags associated with huge irregularly sized basins.