Sentences with phrase «atmospheric transport of heat»

For Europe specifically, it is estimated that the CO2 flux from land vegetation contributes to reduce the global net flux associated with atmospheric growth of CO2, but the relative magnitude of this sink has been decreasing since the 1990s (from capturing 40 % of the global growth previously, to about 20 % now), likely further to changes in the atmospheric transport of heat and humidity over Europe.

Not exact matches

The complex interactions of atmospheric turbulence and heat transport affect global climate.

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.

The temperature gradient creates atmospheric circulation, which transports heat from areas of equatorial excess to the cold polar regions.

A continual cycle of heat and moisture is pulled from the tropical ocean and transported around the globe on belts of atmospheric energy.

For instance, there is no evidence that, with the current configuration, atmospheric heat transports have vastly different modes of behaviour — and so they are unlikely to suddenly flip into a new state.

It is still popular nomenclature in physical oceanography and atmospheric dynamics to refer to the bodily transport of energy by a fluid as «heat transport.»

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.

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 hadn't heard about the heat transport via the atmosphere, but it didn't surprise me — that is what the jet streams are all about — a wind caused by an atmospheric temperature differential, given a little bit of a spin.

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

Redistribution of heat (such as vertical transport between the surface and the deeper ocean) could cause some surface and atmospheric temperature change that causes some global average warming or cooling.

Its findings suggest that changing storm patterns and the ensuing droughts are due to a southern shift in the Hadley cell, the large - scale pattern of atmospheric circulation that transports heat from the tropics to the subtropics.

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.

A strengthening ACC created a barrier inhibiting intrusions of warm tropical waters and minimizing both oceanic and atmospheric heat transport resulting in the Refrigerator Effect.

Unfortunately, there is no detailed instrument record of subsurface changes in Gulf Stream heat transport into the region over the past decades, so it's hard to say — and the atmospheric component?

By the way, here is a somewhat different view of the issue, which points to a more dominant role for atmospheric rather than oceanic heat transport, courtesy Richard Seagar: http://www.ldeo.columbia.edu/res/div/ocp/gs/

For example, the Hadley cell, the large - scale pattern of atmospheric circulation that transports heat from the tropics to the subtropics, has marched south during recent decades, moving the subtropical dry zone (a band that receives little rainfall) along with it.

The identified atmospheric feedbacks including changes in planetary albedo, in water vapour distribution and in meridional latent heat transport are all poorly represented in zonal energy balance model as the one used in [7] whereas they appear to be of primary importance when focusing on ancient greenhouse climates.

Magnusdottir, G., and R. Saravanan, 1999: The response of atmospheric heat transport to zonally - averaged SST trends.

The evolution of global mean surface temperatures, zonal means and fields of sea surface temperatures, land surface temperatures, precipitation, outgoing longwave radiation, vertically integrated diabatic heating and divergence of atmospheric energy transports, and ocean heat content in the Pacific is documented using correlation and regression analysis.

His research involves studies of the role of the tropics in mid-latitude weather and global heat transport, the moisture budget and its role in global change, the origins of ice ages, seasonal effects in atmospheric transport, stratospheric waves, and the observational determination of climate sensitivity.

Storms help replenish warm water next to the ice, and help carry addtional heat into the melting region via atmospheric transport of warmer moist air.

We analyze spatial patterns of precipitation globally associated with forest loss by calculating shifts in the global tropical precipitation band, the Inter-Tropical Convergence Zone (ITCZ), associated with changes in cross-equatorial atmospheric heat transport using equation 2.21 from [33].

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.»

The atmosphere is analogous to a flexible lens that is shaped by the density distribution of the gas molecules, of the atmosphere in the space between the sphere holding them, and space; Incoming heat gets collected in many ways and places,, primarily by intermittent solar radiation gets stored, in vast quantities, and slowly but also a barrage of mass and energy fluxes from all directions; that are slowly transported great distances and to higher altitudes mostly by oceanic and atmospheric mass flows.

They openly acknowledge the importance of the GHG - GHE in establishing the disequilibrium conditions that lead to a lapse rate and atmospheric heat transport in the first place, but then analyze that motion to argue that the overall feedbacks of this process are negative, not positive, something that actually explains the remarkable stability of our atmosphere in the face of internal variability that (in a chaotic system) could easily drive it to catastrophe.

Even though radiation from the troposphere is much slower, the heat is much more widely distributed; a lot of it is moved over what would have been much cooler ground — it isn't just low level atmospheric heat transport that matters.

While there is some influence of differences in forcing patterns among the scenarios, and of effects of oceanic uptake and heat transport in modifying the patterns over time, there is also support for the role of atmospheric heat transport in offsetting such influences (e.g., Boer and Yu, 2003b; Watterson and Dix, 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.

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

Simpson began with a gray - body calculation, Simpson (1928a); very soon after he reported that this paper was worthless, for the spectral variation must be taken into account, Simpson (1928b); 2 - dimensional model (mapping ten degree squares of latitude and longitude): Simpson (1929a); a pioneer in pointing to latitudinal transport of heat by atmospheric eddies was Defant (1921); for other early energy budget climate models taking latitude into account, not covered here, see Kutzbach (1996), pp. 354 - 59.

All that is needed is to add heat carried upwards past the denser atmosphere (and most CO2) by convection and the latent heat from water changing state (the majority of heat transport to the tropopause), the albedo effects of clouds, the inability of long wave «downwelling» (the blue balls) to warm water that makes up 2 / 3rds of the Earth's surface, and that due to huge differences in enthalpy dry air takes far less energy to warm than humid air so temperature is not a measure of atmospheric heat content.

The basic results of this climate model analysis are that: (1) it is increase in atmospheric CO2 (and the other minor non-condensing greenhouse gases) that control the greenhouse warming of the climate system; (2) water vapor and clouds are feedback effects that magnify the strength of the greenhouse effect due to the non-condensing greenhouse gases by about a factor of three; (3) the large heat capacity of the ocean and the rate of heat transport into the ocean sets the time scale for the climate system to approach energy balance equilibrium.

For the real earth, with a significant heat capacity and significant atmospheric and ocean transport, the one summary number that has meaning is the average of T ^ 4 over the surface of the earth... That is what is going to go into determination of the global surface radiative balance.

I would say that there is a partitioning of atmospheric layers, aligned by the fluid dynamic actions of the whole atmospheric mass, mediated by gravity, pressure, and convective heat transport.

My approach in the paper (the application example in http://www.springerlink.com/content/6677gr5lx8421105/fulltext.pdf) is that we can directly use the energy conservation equation to analyze the climate feedbacks which essentially are the changes in the energy cycle of the climate system, including both the radiative feedbacks and also dynamic feedbacks (surface heat fluxes and atmospheric / oceanic energy transport feedbacks).

Fasullo and Trenberth (2008b) went on to evaluate the temporal and spatial characteristics of meridional atmospheric energy transports for ocean, land, and global domains, while Trenberth and Fasullo (2008) delved into the ocean heat budget in considerable detail and provided an observationally based estimate of the mean and annual cycle of ocean energy divergence and a comprehensive assessment of uncertainty.

The cooling impact of this AMOC forced surface heat flux perturbation difference is enhanced by shortwave feedback and diminished by longwave feedback and atmospheric heat transport differences.

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.