Sentences with phrase «ir radiation from the surface»

I know a cloud reflects high energy sunlight up, lessening the heat influx and reflects IR radiation from the surface and so increasing the IR influx.

When Eli last left the bunnies, he was pointing out how gravity explains much of the greenhouse effect, well, except for the part that you need some things in the atmosphere that absorb IR radiation from the surface.

Not exact matches

If it is correct, then the IR radiation emitted from the earth's surface and absorbed will be nearly completely thermalized and not re-emitted, i.e. it will heat the air.

Greenhouse gases (like CO2, CH4 or water) absorb and re-radiate infra - red (IR) radiation that is emitted from the planet's surface at rates that depend on the temperature (the Stefan - Boltzmann law).

Because the wavelength of emitted EM radiation varies with the temperature of the source, it does so in the form of longer - wave IR than that received from the Sun — the Earth's surface is significantly cooler than that of the Sun.

What the CO2 (both «cold, hot and warm CO2 ′) and other gasses do is to make the atmosphere more optically thick to thermal IR radiation emitted (mainly) from the Earth's surface [note2] which has consequences for the equilibrium temperature profile of the atmosphere.

Therefore, for practical purposes, the sole source of excess heat if we increase CO2 is IR emitted by the surface from absorbed solar radiation,.

During nighttime, clouds prevent the surface IR radiation from escaping, warming the planet.

Over land, you have a surface energy balance that includes downwelling IR, upwelling IR (Stefan Boltzmann), downwelling solar radiation minus what is reflected back from the surface, latent heat flux and sensible heat flux (these are turbulent fluxes associated with exchange with the atmosphere), and conductive flux from the ground (below the surface).

The paper provides evidence that all the longwave IR radiation released to space comes from the Mesopause, the Tropopause, Cloud tops, and the surface.

However, the volumes of gas have to be contained, and assuming that the containers are identical and not IR transparent (e.g. glass) the radiation to the outside will be from the external surface of the container.

The Earth is much cooler than the Sun, this means that the energy re-emitted from the Earth's surface is lower in intensity than that emitted from the Sun, i.e. in the form of invisible infra - red (IR) radiation.

But it's when that volume is exposed to outside influences — like IR radiation from the solar - heated surface of the Earth passing through that volume — that a temperature change can occur as a result of adding more CO2 to the volume.

IR radiation absorbed from this source very definitely WILL heat the atmosphere (if convection from the surface is ignored).

Greenhouse gases «trap» radiative energy because they absorbed IR radiation from the Earth's surface which then continually «bounces up and down».

That greenhouse gases being absent does not effect the one third of solar radiation being absorbed by clouds Or the surface albedo can jump from 12 % to 30 % Or the greenhouse gases being absent but still have clouds to reflect radiation Or the IR (not now absorbed) by the clouds will not obey Kirchoff's Law on reaching the planet surface And so on.

Since there is about 50 % variable cloud cover at any given time and clouds can reflect over 99 % of the IR radiation from the Earth's surface clouds are responsible for a likely 90 % of the Earth's greenhouse effect.

You may be thinking that the increased back radiation to the surface would cause an enhancement of evaporation and convection that will lead to a warming of the upper troposphere and hence to some increase of the amount of IR (mainly from water vapor) that makes it to space from the warmer upper troposphere.

In Earth's atmosphere, there is a «window» between the 8 and 12 micron band where there is virtually no absorption going on, and through which IR radiation passes out from the surface to space virtually unimpeded.

The heat of vaporization comes from the same source as the heat used to elevate the surface temperature n the first place, the incoming IR radiation.

When the sun is no longer shining the surface of the earth will cool because upward radiation is continuing, and IR is taking energy from the earth into outer space.

The increased IR back radiation slows the cooling of the ocean by slowing the rate at which heat from below the first few millimeters comes to the surface.

From my understanding, increased CO2 reduces IR flux to space and the back IR radiation warms the surface and troposphere.

You get the real GHE from correct radiation physics, which is that thermal IR from the lower atmosphere blocks surface IR emission in GHG band centres, reducing total emissivity.

(2) Just saying the words «lapse rate» and «ideal gas equation» doesn't get you around having to explain how one could conserve energy if one considers the current surface temperature of the earth and imagines that one had an atmosphere transparent to IR radiation from the earth's surface.

You agree that SOME of the downward pointing radiation comes from the low reaches of the atmosphere but I am saying ALL of the downward radiation measurable at the surface is from the low reaches (just 10's of meters) EXCEPT (minus) that which can and does go upward to space and that is called the «window» frequencies upward IR radiation.

There is «backradiation» because people have given that label to «downward directed thermal IR radiation from the atmosphere toward the surface».

However, the point is simply this: As long as you have an IR - absorbing atmosphere that is at a nonzero temperature, the earth's surface will have to be at a warmer temperature (in order to radiate away the energy that it receives from the sun) than it would be if the atmosphere did not absorb any of the IR radiation that the earth emits.

That induces an increase in insolation (~ 2 W / m2) directly absorbed in the oceanic surface, and an increase in IR radiation (~ 5 W / m2) back to space (from anywhere in the atmosphere or surface).

Without GHG the surface would lose energy by IR radiation faster because there is no downwelling or back radiation from the atmosphere.

You have to demonstrate that all radiation from the Earth surface IR radiation converted to 14 ~ 16um that CO2 can absorb more than its share of 0.039 % content.

Its a trace gas and also IR radiation spectrum from ground surface and sea surface will not just suit CO2's 14 ~ 16um to change all spectrum to 14 ~ 16um so to enable CO2 to absorb all radiation energy.