Sentences with phrase «transport of heat at»

Not exact matches

«If you can make heat behave as a wave and have interference while controlling how far it moves, you could basically control all the properties behind heat transport,» said Martin Maldovan, an assistant professor in the School of Chemical and Biomolecular Engineering and School of Physics at the Georgia Institute of Technology, and the paper's author.

They looked at how different planetary rotation rates would impact heat transport with the presence of oceans taken into account.

Using 19 climate models, a team of researchers led by Professor Minghua Zhang of the School of Marine and Atmospheric Sciences at Stony Brook University, discovered persistent dry and warm biases of simulated climate over the region of the Southern Great Plain in the central U.S. that was caused by poor modeling of atmospheric convective systems — the vertical transport of heat and moisture in the atmosphere.

T2Well is an extension of the TOUGH (Transport of Unsaturated Groundwater and Heat) codes, a suite of software tools developed at Berkeley Lab that uses numerical models to simulate the flow of liquid, gas, and heat in porous materials and weHeat) codes, a suite of software tools developed at Berkeley Lab that uses numerical models to simulate the flow of liquid, gas, and heat in porous materials and weheat in porous materials and wells.

Atmospheric waves at the interface of rapidly flowing air (above) and near - stationary air (below), leading to mixing and heat transport.

At the same time, increasing depth and duration of drought, along with warmer temperatures enabling the spread of pine beetles has increased the flammability of this forest region — http://www.nature.com/nclimate/journal/v1/n9/full/nclimate1293.html http://www.vancouversun.com/fires+through+tinder+pine+beetle+killed+forests/10047293/story.html Can climate models give different TCR and ECS with different timing / extent of when or how much boreal forest burns, and how the soot generated alters the date of an ice free Arctic Ocean or the rate of Greenland ice melt and its influence on long term dynamics of the AMOC transport of heat?

Related Awards # 1235881 Convective Thermal Transport at Superhydrophobic Surfaces # 1066426 Investigation of icephobic behavior of surfaces with tunable properties # 1331817 STTR Phase I: STTR Proposal on Atmospheric Water Capture using Advanced Nanomaterials # 1066356 Turbulent Flow Drag Reduction Using Surfaces Exhibiting Superhydrophobicity and Riblets # 1235867 Collaborative Research: A Micropatterned Wettability Approach for Superior Boiling Heat Transfer Performance # 0952564 CAREER: Fundamental Studies of Condensation Phenomena on Heterogeneous and Hierarchical Nanoengineered Surfaces

The way the ocean transported heat, nutrients and carbon dioxide at the peak of the last ice age is significantly different than what has previously been suggested.

ADDITIONAL OPTIONS are 17» Alloy Wheel A / S, Auto - Dimming Mirrors, Bmw TELESERVICES, Floor Mats, Highlight Trim Finishers Pearl, Rain Sensor And Auto Headlight, Sport Leather Steering Wheel, Tire Pressure Monitor, Additional 12 - V Power Sockets, Auto - Dimming REARVIEW Mirror, CO2 Relevant Vehicles, Hands - Free BLUETOOTH And USB, Moonroof, Satellite Radio Preparation, Standard Instrument Cluster, Transport Protection, Ambient Lighting, Automatic Climate Control, Daytime Driving Lights, Heated Front Seats, Shipping Package, Storage Package, Universal Garage - Door Opener, Anthracite Wood Trim, Bmw Assist ECALL, DVD Area Coding, North America, HI - FI Sound System, Power Front Seats, Split Fold - Down - Rear Seat, Tier 2 and much more.We at Beemer Haus, pride ourselves on listening to the needs of our customers.

At the very least he needs to provide a pointer to «the calculations of the sensitivity of the mean climate to a doubling of CO2 concentration» that he has found are ignoring changes in non-radiative atmospheric heat transport.

Global average surface temperatures are not expected to change significantly although temperatures at higher latitudes may be expected to decrease to a modest extent because of a reduction in the efficiency of meridional heat transport (offsetting the additional warming anticipated for this environment caused by the build - up of greenhouse gases).

Therefore I would argue that this same freakish Arctic storm and transport of heat that at first resulted in the all the «warm» headlines could potentially further lead to headlines of the more wintery variety, including Arctic or cold air outbreaks and snow storms....

As far as I know, if the only physical mechanism under consideration is the radiative cooling of the planet's surface (which was heated by shortwave solar radiation and reradiated at longer wavelengths in the infrared) via radiative transport, additional gas of any kind can only result in a higher equilibrium temperature.

The warm air above nocturnal or polar inversions, or even stable air masses with small positive lapse rates, are warmer than otherwise because of heat capacity and radiant + convective heating during daytime and / or because of heating occurring at other latitudes / regions that is transported to higher latitudes / regions.

(In the global time average, diffusion of latent heat is in the same direction as sensible heat transport, but latent heat will tend to flow from higher to lower concentrations of water vapor (or equilibrium vapor pressure at the liquid / solid water surface), and regionally / locally, conditions can arise where the latent heat and sensible heat fluxes are oppositely directed.)

re14 Ike Solem >... the rapid changes at the poles seem to involve a lot of heat transport into that region via both the atmosphere and the oceans.

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.

Moreover, most of this flow probably occurs at some depth, where the temperature is close to zero, so its heat transport is also very low.

Quite apart from the wider publicity given to the heat transport problem in the Russell ocean model (which affects all of the published GISS - E2 - R results), and the famous rogue LU run where a negative forcing yields an overall positive net flux response (which is not rogue at all and not to be excluded according to Gavin), the WMGHG results and particularly the relationship between Fi and ERF values now seem positively bizarre.

Finds that in the Northern Hemisphere there is no reduction in the sensible heat transport despite the reduction in the zonal - mean temperature gradient at low levels associated with polar amplification of the warming

In particular the Faroe Bank Channel overflow, Hornbanki section Atlantic inflow volume and heat fluxes, Labrador Sea western boundary current transport at 53 ° N, Wyville Thomson Ridge overflow transport, Faroe Shetland Channel volume fluxes of Atlantic Water, Denmark Strait overflow transport, Iceland - Faroes Atlantic inflow, Kogur Array freshwater flux.

Many of the projects we look at as being carbon - friendly (i.e. construction of a major green energy or clean transport project) are significantly less so since the big burst of carbon from construction, which happens at the start of the project, hangs around for decades accumulating more heat than early LCAs accounted for (an abbreviated treatment of this concept is in Kendall, Chang & Sharpe, Environ.

This can be a result of heat storage in summer and release in winter; or of transport of heat from warmer locations: a particularly notable example of this is Western Europe, which is heated at least in part by the north atlantic drift.

These observations hint at a slow down in the transport of heat from the tropics - at least in the North Atlantic and North Pacific.

The reason for the decline in sea surface temperatures at these locations is because of the reduced heat transport along the ocean surface from the tropics - where solar heating is most intense.

Expect about 3 decades of contributed cooling from the AMO before it reaches minimal heat transport and begins to speed up again assuming it won't get stuck in a negative phase as at least one reconstruction shows it did during the LIA.

Is this not indicative of a major blunder in the simplifications, notably the effect of convective heat transport and the stabilising effect of condensation and evaporation at the oceanic surfaces?

An atmosphere that is perfectly transparent to incoming and outgoing radiation can not radiate and all its heat content comes from conduction from the surface and is transported through the atmosphere solely by convection with no loss of energy to space except for the tiny fraction of atoms at the top of the atmosphere that exceed escape velocity.

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.

If the gas permits irreversible heat transport at all by any means, including by mere thermal radiation (also irreversible) then the entropy of the system will increase as it becomes isothermal (assuming isolation and no external or internal sources of continuous work).

Thermal fluctuations do not strictly increase entropy of any system — note well, any system — only when all parts of the system that are in «thermal contact» (connected by interactions of any sort that permit the transport of heat) are at the same temperature.

As I mentioned above, this is not hard to understand if you look at heat transport as a diffusion phenomenon, i.e., as flow in accordance with the laws of probability from a region characterized by a higher concentration (of fast molecules or fast electrons) to one with a lower concentration.

Heat picked up at the surface is thus rapidly vertically mixed and transported by all three mechanisms — conduction, convection and radiation — acting at different length scales and with considerable and non-ignorable chaotic and self - organized emergent mesoscale structure — to produce an atmosphere that, as you note, ends up somewhere between the DALR and isothermal most of the time, although inversions (warmer on top) or with a gradient even larger than the DALR happen all the time, and are unstable or transiently metastable states with some lifetime and break apart and perhaps reform somewhere else as the conditions that favor them recur.

Climate change at those higher latitudes is dominated by variations in the transport of surplus tropical heat.

It takes decades (even centuries) for (deep) oceanic heat transport to manifest at the surface so we see a combination of short - term heat manifestation as a result of the 11 yr solar cycle and longer - term variation.

However — latent heat is a significant component of energy transport at the surface and varies with water availability on land.

Given that they make the bulk of vertical heat transport in the atmosphere, not sure the models are worth more than the expertise of the different groups into building complex subgrid paramterisations, and this is very far from «models implemetning first principles»... I think that at this stage, climatology have more to win from progress in filling experimental database than from progress from modelling.

«Much of our confidence stems from the fact that our model does well at predicting slow changes in ocean heat transport and sea surface temperature in the sub-polar North Atlantic, and these appear to impact the rate of sea ice loss.

Warning of the scale of the task, Haszeldine pointed out that, whereas discussion on realising CCS at scale is often focused on electricity, the challenges of decarbonising heat and transport are, perhaps, even greater.

In the case of dry air and without CO2, the cooling of the radiator is given by h * (T - Ta) where T and Ta are temperatures of the surface and the air layer, respectively, at the given time t. h describes the heat transport from the surface to the layer by radiation and convection.

However, an assessment of transports at 48 ° N using five repeat World Ocean Circulation Experiment sections and air - sea heat and freshwater fluxes as input to an inverse box model yielded no significant trend in the meridional overturning at that latitude (Lumpkin et al., 2008), though the time period studied was relatively short (1993 - 2000).

Two things jump out at me here: you speak of «other scenarios» and «possible heat transport trends».

I think David Young's point can be addressed by looking at how much of the transport of heat and moisture is resolved by the model, and it turns out it all is very well accounted for.

The blackbody temperature isn't particularly relevant at a single point at the surface because there are lots of different heat transport mechanisms that affect the local surface energy balance and there's lots of thermal inertia at the surface, particularly the oceans.

This is the first time we've seen waters this warm in any of the fjords in Greenland... the subtropical waters are flowing through the fjord very quickly, so they can transport heat and drive melting at the end of the glacier.

I have the impression that a partial import of this suggestion is that we all must stop driving cars; put our air conditioner thermostats at 95F, and heating to 60F; build up limited mass transit and otherwise limit the transport of goods and services between locales....

In 2006 I went to a talk by a physical chemist who talked about how mass and heat transport are coupled: you can't calculate the flux of carbon dioxide from water to atmosphere and vice versa just by looking at the concentrations, you need to know the relative temperatures too.

In the case of transport and heating fuel, there is more scope for saving energy at short notice; cutting leisure journeys, for instance, wearing extra pullovers and, in the slightly longer term, driving smaller cars have a role to play while, in the longer term, there is a totally different low - energy paradigm waiting to be developed.

At last week's Conservative Party Conference, the new Energy Minister, John Hayes, promised that «the high - flown theories of bourgeois Left - wing academics will not override the interests of ordinary people who need fuel for heat, light and transport — energy policies, you might say, for the many, not the few» — a pledge that has triggered fury from green activists, who fear reductions in the huge subsidies given to wind - turbine firms.

We subject an aquaplanet GCM to a large array of different spatial patterns and magnitudes of ocean heat transport, and look at how variations in the transport affect aspects of the time - mean climate.