Sentences with phrase «for radiative cooling»

The more «greenhouse» or IR - active gases in the stratosphere up to the thermosphere / edge of space, the more radiative surface area is available for radiative COOLING to space.

«In addition to these regions, we can foresee applications for radiative cooling in off - the - grid areas of the developing world where air conditioning is not even possible at this time.

Not exact matches

[Yao Zhai et al., Scalable - manufactured randomized glass - polymer hybrid metamaterial for day - time radiative cooling]

While gas is launched out of the quasar at very high temperatures, there is enough time for some of it to cool through radiative cooling — similar to how the Earth cools down on a cloudless night

It provides for the first time a high - fidelity technology demonstration of how you can use radiative sky cooling to passively cool a fluid and, in doing so, connect it with cooling systems to save electricity,» said Raman, who is co-lead author of the paper detailing this research, published in Nature Energy Sept. 4.

ENSO events, for example, can warm or cool ocean surface temperatures through exchange of heat between the surface and the reservoir stored beneath the oceanic mixed layer, and by changing the distribution and extent of cloud cover (which influences the radiative balance in the lower atmosphere).

ENSO events, for example, can warm or cool ocean surface temperatures through exchange of heat between the surface and the reservoir stored beneath the oceanic mixed layer, and by changing the distribution and extent of cloud cover (which influences the radiative balance in the lower atmosphere).

In other words, the same natural forcings that appear responsible for the modest large - scale cooling of the LIA should have lead to a cooling trend during the 20th century (some warming during the early 20th century arises from a modest apparent increase in solar irradiance at that time, but the increase in explosive volcanism during the late 20th century leads to a net negative 20th century trend in natural radiative forcing).

As for your question about hurricanes, the argument given for the global mean hydrological cycle doesn't apply to the hurricane because the global mean argument assumes an equilibrium between radiative cooling and latent heat release.

Convection tends to occur where radiative processes alone would make the temperature drop with height faster than the rate that air cools as it rises (the greenhouse effect is important for that, too).

The lapse rate within the troposphere is largely determined by convection, which redistributes any changes in radiative heating or cooling within the troposphere + surface so that all levels tend to shift temperature similarly (with some regional / latitudinal, diurnal, and seasonal exceptions, and some exceptions for various transient weather events).

A compelling argument for the positive longwave response is a leading alternate to Lindzen's IRIS although it receives less attention, and is known as the FAT hypothesis (from Dennis Hartmann) and arises from the fundamental physics of convection only heating the atmosphere where radiative cooling is efficient, and thus the temperature at the top of convective cloudiness should be near constant as it becomes warmer.

Re my 441 — competing bands — To clarify, the absorption of each band adds to a warming effect of the surface + troposphere; given those temperatures, there are different equilibrium profiles of the stratosphere (and different radiative heating and cooling rates in the troposphere, etc.) for different amounts of absorption at different wavelengths; the bands with absorption «pull» on the temperature profile toward their equilibria; disequilibrium at individual bands is balanced over the whole spectrum (with zero net LW cooling, or net LW cooling that balances convective and solar heating).

Thus, at least if the CO2 band is sufficiently close to saturated at it's center at TRPP, and maybe even if it is not, the TRPP radiative forcing will be greater than the TOA radiative forcing for a doubling of CO2, so their will still be initial stratospheric cooling.

Knowing the change in the non-radiative cooling of the Earth surface is as important as knowing the change in the radiative cooling, for computing the climate response to increased DWLWIR.

Natural radiative forcing (solar + volcanic) actually leads to a net cooling over the 20th century, and the remaining (internal) natural variability could not possibly account for the late 20th century warming.

Sure, we can use the radiative balance explanation for warming and cooling.

The US is responsible for 10 % of that, meaning the evil empire you wish to strangle is responsible for.000002 of the atmosphere being occupied by a gas that has a heavier specific gravity than air, heat and COOL S FASTER than air, has different radiative properties, is 1 / 400th of the greenhouse gasses.

For instance the earth's global ocean already has an albedo close to zero so greenhouse gases are limited there and because GHGs modus operandi is restricting radiative cooling and the ocean is still free to cool evaporatively there is no first order significant effect of greenhouse gases over a liquid ocean.

Here we show that accounting for recent cooling in the eastern equatorial Pacific reconciles climate simulations and observations.We present a novel method of uncovering mechanisms for global temperature change by prescribing, in addition to radiative forcing, the observed history of sea surface temperature over the central to eastern tropical Pacific in a climate model.

For example, removing dark boreal forests primarily leads to global cooling through the radiative effects of increasing local albedo [21 — 23].

For example, if the emissivity of two bodies is very different, there can be more radiative flux from the cooler one.

Radiative cooling at altitude is critical for continued vertical circulation in the Hadley, Ferrel and Polar tropospheric convection cells.

For an atmosphere with a pressure gradient in which the gases are free to move, adding radiative gases to the atmosphere will only speed up convective circulation and tropospheric cooling.

No, without radiative cooling (but assuming the same albedo for simplicity), the temperature of the Earth's surface would not be average 288 K but rather only ~ 255 K (really the average of the square of the temperature over the surface).

Radiative cooling at altitude is critical for continued convective circulation.

None of the Annan / Hargreaves priors go below zero, and while this may be physically realistic it does not allow for the fact that the observational data generate negative sensitivities, mostly because of ocean cycle warming and cooling effects that the radiative forcing estimates do not take into account.

Konrad says: April 18, 2013 at 8:04 pm Radiative cooling at altitude is critical for continued convective circulation... Energy loss at altitude is just as important for convective circulation as energy input near the surface.

Basically, for an atmosphere in which the gases are free to move, the cooling effect of radiative gases far outweighs their warming effect.

The reason is that for a macroscopic object such as an ordinary mercury thermometer or a spacecraft, radiative heating and cooling processes will dominate (by orders of magnitude) over convective heat transfer with the thin thermosphere.

So there's two things: 1) the atmosphere is 10,000 kg for every square meter, and it cools in the normal way given its radiative energy loss out to space.

Because the only way for the earth to cool is by radiative output into space, and because of the present heat content, we have stored energy in the billions of years behind us.

Your claim proven as a theorem now means basically (with some radiative cooling at the top for the return flow) that it does not need confirmation by numerical modelling, but rather, application, to see how it plays out in real atmospheric problems.

One might even envision a system in which collector panels similar to trickle style swimming pool panel are glazed during the winter for efficient heat collection (like a Thomason trickle collector), and then the glazing panels are removed in the summer to provide efficient evapro - radiative cooling in the summer.

And then there are those of us who call themselves «lukewarming coolers», lukewarming for the radiative effect, coolers for the path nature is taking ahead.

«The recent dramatic cooling of the average heat content of the upper oceans, and thus a significant negative radiative imbalance of the climate system for at least a two year period, that was mentioned in the Climate Science weblog posting of July 27, 2006, should be a wake - up call to the climate community that the focus on predictive modeling as the framework to communicate to policymakers on climate policy has serious issues as to its ability to accurately predict the behavior of the climate system.

For example, in addition to showing the future climate solar warming zone, Fig. 3 shows a zone of strong solar cloud radiative cooling, located between 50 ° and 80 ° S.

In the idealised situation that the climate response to a doubling of atmospheric CO2 consisted of a uniform temperature change only, with no feedbacks operating (but allowing for the enhanced radiative cooling resulting from the temperature increase), the global warming from GCMs would be around 1.2 °C (Hansen et al., 1984; Bony et al., 2006).

Gerlich and Tscheuschner, despite their apparent mastery of the mathematics of radiative transfer, don't know the difference between gross and net radiative flux, and they are apparently unaware of the concept of causality in an Einsteinian framework — a molecule of CO2 emitting a photon in a random direction can't know if there is a (cooler or warmer) surface in the direction of emission until time has elapsed for the photon to travel to the surface and back, and has no mechanism to remember from one photon to the next whether there was a source of photons in that direction, or what the apparent temperature of the emitter was.

The interest was two-fold: practically, Elsasser had provided a way for forecasters to quickly calculate radiative cooling or heating in specific situations where temperature and humidity were known: this was to be done by a graphic «calculator» printed on the back cover of the original book.

He doesn't mention that the radiosonde datasets are regarded as questionable for climatological purposes at higher altitude due to radiative heating / cooling effects on the instrument packages.