Sentences with phrase «ir radiation absorption»

idlex asked:» Am I right in saying that CO2 has 4 energy levels that correspond to IR radiation absorption?

Not exact matches

Another confirmation test would be to use a time series of stratospheric temperature as a proxy in this regard, since the stratosphere warms at volcanic eruption peaks due to the absorption of longwave radiation from below and also near - IR absorption.

The CO2 doesn't alter climate by affecting thermal mass; it affects climate by retarding the efficiency of infrared radiation, and it has important IR absorption bands in places where water is ineffective.

The point is that although selection rules will determine whether a molecular vibration can absorb IR radiation, and is obviously necessary for a complete discussion of the issue, the issue can be simply addressed by consideration of the frequencies of absorption by the gas and emission by the planet.

More to the point though, CO2 (or H2O or whatever) absorption of IR radiation does not depend on the earth's blackbody or brightness temperature being higher than the mean temperature of the atmosphere (and the CO2).

In both cases the air is warmed by the absorption of IR radiation by greenhouse gases.

I make you angry: -RCB- It shows CO2's absorption in the longwave IR band, CO2 slows longwave radiation lost to space which increases temperature which increases evaporation, increasing water vapor in the atmosphere.

Those molecules are ir inactive for vibrational absorption or emission of radiation.

The Greenhouse Effect refers to the absorption and re-radiation of IR thermal radiation by molecules including CO2, methane, water vapor, fluorocarbons, nitrous oxides, and SF6.

But Miskolczi was able to show, using NOAA database of weather balloon observations that goes back to 1948, that atmospheric absorption IR radiation has been constant for the last 61 years.

The inappropriately - named «greenhouse» effect is actually the effect of absorption / emission of IR radiation due to radiatively - active gases combined with the effect of declining temperature with height of the atmosphere (lapse rate).

I can feel thermal radiation, I believe CO2 has a measured IR absorption spectrum, I believe a CO2 molecule is not a bottomless pit of energy that can be filled without ever spilling over, and this predictable spilling over is measured from spectrometers on satellites and the ground, therefore there is a CO2 greenhouse effect whose net effect on the climate is of some small and as yet imprecisely known size.

The claimed feedback (about 4W / m2 for doubling CO2) is based ONLY on the absorption of IR radiation.

Re David L. Hagen December 27, 2013 at 6:49 pm at https://judithcurry.com/2013/12/20/open-thread-weekend-41/#comment-429721 You wrote re my question «What is the IR optical depth of the clear - sky part»: «Miskolczi is modeling the radiative absorption / radiation from ALL the greenhouse gas components of the atmosphere.

The 15 % of outgoing IR in the «holes» in the outgoing absorption goes out and the surface layer of the atmosphere and the surface play handball with the rest of the IR radiation.

Not to belabor the point, but «that type of radiation» * is * the solar spectrum (modified by absorption thru the atmosphere), with ~ 10 UV, ~ 40 % visible, and ~ 50 % IR.

The IR radiation that is subsequently emitted interacts with carbon dioxide in the atmosphere — a basic reality of experimental physics that is most certainly seen in absorption spectra.

1) The influence of methane on the Earth energy balance is not due to the absorption peak at 3.3 µm because that wavelength has very little role in solar radiation and even less in IR radiated from the Earth.

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.

Pekka Pirila writes «- The IR absorption due to CO2 in air has been measured accurately and in great detail in laboratory — The downwelling radiation has been measured in many locations with variable accuracy and number of details — The outgoing IR radiation at the top of atmosphere has been measured as a function of the wavelength»

The strength of the IR component is determined by laws of emission and absorption of radiation and depend strongly on the temperatures at various levels, but the total flux is maintained at the level required by stationarity by the convection and transport of latent energy as long as the radiation alone is not sufficient.

The wavelength of some of the IR radiation involved in absorption and emission with those gases overlaps with incoming IR in the SSI and with earth emitted outgoing IR.»

The wavelength of some of the IR radiation involving absorption and emission of those gases overlaps with incoming IR in the SSI and with earth emitted outgoing IR.»

The energy path is absorption, mass transfer of some of it to the air, upwelling radiation of the rest, absorption of IR by GHG's, re-radiation up to space and down to the surface, absorption and heating of that surface, mass transfer to the lower atmosphere, movement by convection to the thermometer.

This absorption can even occur multiple times but once the radiation occurs high enough up in the atmosphere that the remaining IR - absorbing substances above that layer are unlikely to absorb the radiation, then it can successfully escape to space.

But absorption of IR radiation IS greenhouse effect.

Also, has anyone proven the increased absorption of IR radiation from increased CO2?

The confusing thing for me is radiatively CO2 has its greatest absorption of IR radiation from about 14 microns to 20 microns wavelength....

All the energy stored in the atmosphere is sensible heat above the top of the troposphere, and increasing the CO2 content there increases the amount of radiation to space more than it increases the likelihood of absorption of IR from below, so the stratosphere cools — this has been observed.

Likewise, the emission of CO2 within its absorption bands is just as effective as its interception, therefore this energy is partitioned throughout the atmosphere and radiated back to earth in its majority (because the escape of energy through the optically thick higher levels of the atmosphere reduces the flux, whereas the earth is still optically close by and a ready recipient of IR radiation.

One major simplification involves treating all the infrared radiation (IR) as if it consisted of one wave length, although the real situation is of course much more complicated with a wave spectrum, selective absorption bands, and radiation with different frequencies and optical depths (Pierrehumbert 2011).

I just can't see where you get the idea that absorption — which is isotropic — and emission — also isotropic — gives rise to a one - way opacity to IR radiation in the lower atmosphere.

The additional energy from the absorption of increasing IR radiation adjusts the curvature of the TSL such that the upward conduction of heat from the bulk of the ocean into the TSL is reduced.

The absorption and emission of IR radiation by CO2 is a chemical process, and MUST be related to the second law.