mkelly says: March 1, 2011 at 8:44 am Dave Springer says: March 1, 2011 at 7:53 am «Nitrogen doesn't
absorb infrared radiation but it can certainly gain kinetic energy by excited molecules of CO2 and H2O bumping into nitrogen molecules.
Although molecules containing two atoms of different elements such as carbon monoxide (CO) or hydrogen chloride (HCl)
absorb infrared radiation, these molecules are short - lived in the atmosphere owing to their reactivity and solubility.
For a particular vibrational mode to
absorb infrared radiation, the vibrational motion associated with that mode must produce a change in the dipole moment of the molecule.
Nitrogen and Oxygen not only
absorb infrared radiation, they also absorb gamma rays, x-rays, and uv light.
It does
absorb infrared radiation and trap heat in the atmosphere, which is the definition of a greenhouse gas, but carbon monoxide is very reactive and soluble, so its molecules do not remain in the atmosphere for any significant time.
Greenhouse gas molecules
absorb infrared radiation.
These gases
absorb infrared radiation emitted by Earth and release that energy into the atmosphere rather than allowing it to escape to space.
Traditional anthropogenic theory of currently observed global warming states that release of carbon dioxide into atmosphere (partially as a result of utilization of fossil fuels) leads to an increase in atmospheric temperature because the molecules of CO2 (and other greenhouse gases)
absorb the infrared radiation from the Earth's surface.
These so - called greenhouse gases
absorb infrared radiation, emitted by the Earth's surface, the atmosphere and clouds, except in a transparent part of the spectrum called the «atmospheric window», as shown in Figure 1.2.
It has been understood since the 19th century that some gases
absorb infrared radiation (IR) that is emitted by the planet, slowing the rate at which the planet can cool and warming the surface.
Less well appreciated is that clouds (made of ice particles and / or liquid water droplets) also
absorb infrared radiation and contribute to the greenhouse effect, too.
It was while pursuing the cause of ice ages that he discovered that water vapor, methane and carbon dioxide
absorb infrared radiation.
For example simple spectroscopy dictates that the CO2 molecule vibrates, stretches, and rotates creating quantized absorption lines that are Doppler broadened and pressure broadened and
absorb the infrared radiation coming from the warmed planet.
As far as climatic impact is concerned, however, the fraction of the total mass of the atmosphere is irrelevant since the atmosphere consists of 99.9 % nitrogen, oxygen and argon, i.e. gases which can not
absorb infrared radiation.
1) Greenhouse gasses
absorb infrared radiation in the atmosphere and re-emit much of it back toward the surface, thus warming the planet (less heat escapes; Fourier, 1824).
Okay, one little nit - picky issue with Q2 is that O2 and N2 actually DO
absorb infrared radiation, just at shorter wavelengths than matter for the Earth's infrared emission spectrum (3 - 27 microns, with a peak around 9 microns or so).
It is known that symmetrical diatomic molecules like nitrogen, oxygen and hydrogen, do not
absorb infrared radiation, even though their vibrational frequencies are in the infrared region.
ABM: The whole point about the greenhouse gases in a planetary atmosphere is that
they absorb the infrared radiation emitted by the surface, and so Kirchhoff's law does not apply.
The greenhouse gases
absorb some infrared radiation emitted by the surface of the Earth and in turn radiate the absorbed energy back to the surface.
The amounts that are in Pluto's atmosphere are enough to
absorb infrared radiation (heat) from the sun and warm the upper atmosphere.
Okay, one little nit - picky issue with Q2 is that O2 and N2 actually DO
absorb infrared radiation, just at shorter wavelengths than matter for the Earth's infrared emission spectrum (3 - 27 microns, with a peak around 9 microns or so).
He explained that most food in its raw state doesn't
absorb infrared radiation — that 90 % of it is reflected.
To a much lesser extent, aerosols also
absorb infrared radiation reflected back from the ground.
«Volcanic aerosols in the stratosphere
absorb infrared radiation, thereby heating up the stratosphere, and changing the wind conditions subsequently,» said Dr. Matthew Toohey, atmospheric scientist at GEOMAR Helmholtz Centre for Ocean Research Kiel.
But
it absorbs infrared radiation and thus can leave a mark on a star's spectrum that the astronomers hoped to see.
Concerning question 2: CO2
absorbs infrared radiation because C has a slight negative charge in the molecule and O has a slight positive charge.
2) What is the molecular difference by which CO2
absorbs infrared radiation but oxygen and nitrogen do not?
All experiments on co2 show how
it absorbs infrared radiation, not how it raise the temperature of the heat source.
Actually the judge asked a slightly incorrect question (probably unwise to correct him publicly), the question should be,» What is the molecular difference by which CO2
absorbs infrared radiation emitted from the Earth's surface but oxygen and nitrogen do not?»
In 1928, George Simpson published a memoir on atmospheric radiation, which assumed water vapour was the only greenhouse gas, even though, as Richardson pointed out in a comment, there was evidence that even dry air
absorbed infrared radiation.
Or, put another way, methane is more effectual than carbon dioxide at
absorbing infrared radiation emitted from the earth's surface and preventing it from escaping into space.
Carbon dioxide
absorbs infrared radiation in the middle of its 15 mm band to the extent that radiation in the middle of this band can not escape unimpeded: this absorption is saturated.
https://news.thomasnet.com/imt/2012/03/06/carbon-dioxide-how-can-one-little-molecule-be-such-a-big-troublemaker «Greenhouse gases, especially CO2 and water vapor, are very good at
absorbing infrared radiation, particularly around 15 µm.
To anonymous: You are mistaken to claim there have been no experiments to confirm that CO2
absorbs infrared radiation.
The error made in the experiment was that c02 was way saturated!?! [i] JAMES: From doing my own digging around I have also had trouble finding the science that «proved» that CO2
absorbs infrared radiation.
Thank you for responding... the question at hand is not about whether carbon dioxide
absorbs infrared radiation: what is being asked for is the replicable experiments which verify the hypothesis (postulated by Mr. Guy Callendar et al) that adding more carbon dioxide to the atmosphere would change the height where the absorption took place.
A greenhouse gas is expected to work its warming through the greenhouse effect,
absorbing infrared radiation and converting it to heat that warms the atmosphere.
«This H2O negative - feedback effect on CO2 is ignored in models that assume that warm moist air does not rise and form sunlight - reflecting clouds, but remains as humid air near sea level,
absorbing infrared radiation from the sun, and approximately doubling the temperature rises predicted from atmospheric CO2 increases.
Greenhouse Gas (GHG)-- A greenhouse gas is any gas that
absorbs infrared radiation in the atmosphere.
Moreover, we have known since the mid-nineteenth century that CO2
absorbs infrared radiation and thus acts as a greenhouse gas which impedes planetary heat loss and thus warms up the surface.
A greenhouse gas is a gas that
absorbs infrared radiation, trapsheat in the atmosphere, and contributes to the greenhouse effect.Carbon dioxide, methane and chlorofluorocarbons are examples ofgreenhouse gases.
It absorbs infrared radiation.
Not exact matches
The lack of
infrared glow from the galaxy across a broad range of wavelengths, however, suggests that there's very little dust there to
absorb and then re-radiate the stars»
radiation, the team notes.
Inside the greenhouse the visible light is
absorbed by the plants and soil and is converted into heat, which is then emitted by the plants and soil in form of
infrared radiation.
By varying the nanoparticles» antimony concentration, they could optimize their ability to
absorb near -
infrared radiation.
Four - pronged impact Like carbon dioxide, black carbon
absorbs sunlight and
infrared radiation, trapping heat in the atmosphere — including the boundary layer closest to Earth's surface.
On the Earth, red - edge appears between red and
infrared (IR) wavelengths, since red - light is
absorbed for photosynthesis while IR
radiation is reflected.
Instead of dissipating into space, the
infrared radiation that is
absorbed by atmospheric water vapor or carbon dioxide produces heating, which in turn makes the earths surface warmer.
Our eyes can not see
infrared radiation but we can feel how our skin
absorbs it when we are standing next to a hot object without touching it.
It's two layers: a top layer of polymer, packed with glass beads just eight microns across — so they can
absorb and then emit
infrared radiation.