Sentences with phrase «radiation at»

Forcing is, for instance, the amount of incoming solar radiation at the top of the atmosphere.

RSW reconstructed from increasing low - level cloud cover, if reliable, leads to an increase in net upward radiation at low latitudes.

This really looks like the cross section of the heat flow in a «passive» heat pump showing evaporation, convection, condensation, precipitation and radiation at the cooling end overlaid on the temperature profile of the refrigerant.

Observational evidence suggests that some organic aerosol compounds from fossil fuels are relatively weakly absorbing but do absorb solar radiation at some ultraviolet and visible wavelengths (e.g., Bond et al., 1999; Jacobson, 1999; Bond, 2001) although organic aerosol from high - temperature combustion such as fossil fuel burning (Dubovik et al., 1998; Kirchstetter et al., 2004) appears less absorbing than from low - temperature combustion such as open biomass burning.

The link shows a chart of upwelling radiation at 20 km looking down and downwelling radiation at the surface looking up.

Neither molecule has been observed to absorb or emit radiation at the frequencies associated with the temperatures of interest.

Second Law: A thin hot gas in front of a cooler background emits radiation at a discrete set of isolated wavelengths.

Colors for identifying ensemble members are the same as those of Fig. 5, and each panel shows 1 SAT, 2 rain, 3 SLP, 4 SW net radiation 5 SW cloud radiative forcing, 6 SW clear - sky radiation, 7 LW net radiation, 8 LW cloud radiative forcing, and 9 LW clear - sky radiation at the TOA

In that case, my example would have given the amounts 1 * (0.3) + 1/2 * (0.6) + 1/10 (0.1) = 0.61 for the fraction of radiation at earth's surface escaping to space.

Planck's law «In physics, Planck's law describes the spectral radiance of electromagnetic radiation at all wavelengths from a black body at temperature T.

If all radiation at 100 meters of altitude high has no chance of hitting the ground, WUWT?

If the N2 was indeed emitting significant amounts of thermal radiation at those wavelengths, where is it?

Controlled radiation at any frequency must be a Godsend

A body will absorb radiation at a rate given by 2) and will emit radiation at a rate given by 3).

It is the first time I've seen an explanation where the energy represented by the specific frequencies absorbed by GHG molecules are transferred to non-GHGs through collision (and then reemitted by the non-GHGs in the atmospheric windows — almost everyone believes the non-GHGs absorb and emit no IR radiation at all — some bad textbooks mis - educated everyone somewhere along the line).

Multiple sources suggest that the energy from BB radiation at ~ 5700 K (eg from the sun) will be ~ 10 UV, ~ 40 % visible, ~ 45 % IR - A & IR - B (0.7 — 3 um), and ~ 5 % «thermal IR» (3 um and longer).

Panel a: Direct warming associated with global forest cover.Panel b: Direct warming associated with forest cover between between 20 ° N and 50 ° N. Panel c: Increase in fractional absorption of solar radiation at the ground for forests relative to bare ground.

For exactly the same reason, the atmosphere also does not emit radiation at the wavelength.

There is no consistent evidence of human health effects from exposure to extremely low - frequency electromagnetic radiation at much higher levels than is present near wind farms.

It can only emit up to close to blackbody radiation at any given temperature.

So whilst most of the radiation losses (over land) within the atmospheric windows will occur during the period between mid morning and early evening, radiation at wavelengths around the absorption peaks will be pretty constant during any given 24 hours.

The very reason that this window exists is that there is no absorption and therefore no radiation at these wavelengths.

The energized molecules re-emit the radiation at a variety of wavelengths, including in the ~ 7μ and ~ 10μ portions, which is why, looking again at the entire spectrum of the graph, there is proportionately more energy in the ~ 7μ and - especially - ~ 10μ regions.

In an open non-cyclic system, the energy can go via radiation at least, any darn place it wants to.

This will be proportional to αλEbλ (λ, T) where Ebλ (λ, T) is the intensity of black body radiation at wavelength λ and temperature T.

Accordingly, the net radiation at TOA R T is the sum of the ASR minus the OLR: R T = ASR − OLR.

In the real world, increased concentrations of CO2 would theoretically block a certain proportion of incoming solar insolation so that less solar radiance is absorbed by the ground and oceans, and it would also increase the rate of out going radiation at TOA.

Incidentally, I may be wrong but, I get the impression that some posters believe that there are two types of radiation: radiation at specific wavelengths and blackbody radiation.

Hmmm, so outgoing radiation at all wavelengths increases as temperature, but since the peak goes to lower wavelengths, it just does not increase as quickly at long wavelengths?

The internal radiation in the cavity will conform precisely to blackbody radiation at the temperature the material is at.

«Hotter objects emit most of their radiation at shorter wavelengths: hence they will appear to be bluer while cooler objects emit most of their radiation at longer wavelengths.»

The important thing is that the radiation at the lower levels has to make its way up through higher levels of the atmosphere before it is able to escape into space.

But though Pouillet was the first to examine DLR in the large context of Earth's heat budget, he was not the first to make experimental measurements of radiation at night.

Fo is the incoming radiation at the TOA corrected for albedo.

As of November 2014, there were 14 Earth System Models from 12 centers in eight countries that modeled temperature, soil moisture, and solar radiation at a daily resolution for at least one of the three RCPs (S1 Table)(Note: all Earth System Models that we used include feedbacks of plant production on water balance).

And you didn't explain the units because Venus isn't getting enough solar radiation at it's mildly closer distance to manage that.

They were startled, however, to find that the crystal absorbed dozens of times more radiation at relatively short infrared wavelengths than did an ordinary tungsten film.

The obvious error is simply by inspection of the downward longwave radiation at the earth's surface:

If you look up lunar characteristics, the peak surface temperature is listed as 123 C or 396 K, which matches the calculation for an albedo of 0.1 for solar radiation at the lunar equator.

Working with his son, L.H.G. Dines, he used his radiometer to make a study of sky radiation at his home in Benson, Oxfordshire — often referred to as «the Benson observatory.»

It seems as though you attempting to calculate downward radiation at the surface from the atmospheric CO2.

Yet I supplied a source from winter in Antarctica that says the water vapour radiation at 15um is still mostly from water vapour.

This is because some of the gases absorb and emit radiation at the same frequencies as others, so that the total greenhouse effect is not simply the sum of the influence of each gas.

It has been the object of my previous investigations to find this relation; hence, if the temperature and humidity at the earth's surface are known, together with the temperature gradient and the humidity gradient, I can from these data calculate the radiation at different altitudes.

The lens will only focus the heat radiation at the target that came from a spot on the all that is directly perpendicular to the surface of the lens.

The heated gas molecules would bump into other air molecules and warm them, and like any material above absolute zero, the Atmosphere would emit radiation at a variety of long - wave wavelengths in random directions, some of which would be absorbed by the surface of the planet, warming it further.

Of course, if the atmosphere could not absorb any radiation at all as a nitrogen atmosphere, the horizontal radiation would proceed right through the entire atmosphere unimpeded to exit the atmosphere in all directions.

Please Calculate your annual radiation dose of radiation at: http://www.ans.org/pi/resources/dosechart/

It is the radiation at about 5 km above the surface — the altitude where more radiation goes up than goes down.

The result is emission of long - wave radiation at a range of wavelengths (not just in the ~ 15μm region, but including the ~ 7μm and ~ 10μm regions) in random directions, some of which finds its way back down to the Surface and is re-absorbed.