Not exact matches
Low energy electrons are ubiquitous and are known to play important role in variety of phenomena relevant to astrochemistry (
where they participate in synthesis of new molecules), in
radiation biology (
where they cause chemical changes in living cell, plasma chemistry),
atmospheric chemistry, radioactive waste management and nanolithography — to name but a few.
As for «explanations», Hank, (138) I am trying to locate one of Gavin's
where I think he said that «in this context», presumably
atmospheric radiation, «heat and energy are equivalent».
The whole issue is that any level above what is often called the «effective radiating level» (say, at ~ 255 K on Earth) should start to cool as
atmospheric CO2 increases, since the layers above this height are being shielded more strongly from upwelling
radiation... except not quite, because convection distributes heating higher than this level, the stratosphere marks the point
where convection gives out and there is high static stability.
Refering to bands
where optical thickness is constant over the interval of each band, if the
atmospheric LW absorption is limited to some band (that doesn't cover all LW
radiation), than increases in OLR in response to surface warming will occur outside that band, so OLR will drop within the band — there will still be some portion of stratospheric or near - TOA cooling that will be transient, but some will remain at full equilibrium.
This is not the case with surface - to - air heat exchange (which involves evapo - transpiration, sensible heat flows, and
radiation) or even within the troposphere
where impacts of latent heating on
atmospheric circulations are realized on scales ranging from hundreds of meters to thousands of kilometers.
The basic ingredients are easy to list: — absorption / emission properties (or spectroscopic parameters) of CO2 at
atmospheric pressures, i.e. data presently available from HITRAN - database combined with models of line broadening — observed properties of the atmosphere
where most important features include clouds and moisture content, but many other factors have some influence — computer model of the transmission of
radiation along the lines of MODTRAN or GENLN2
where is the vertically integrated energy flux in the atmosphere, is the net radiative energy input to an
atmospheric column (the difference between absorbed shortwave
radiation and emitted longwave
radiation), and is the oceanic energy uptake at the surface.
where latent heat release and net
radiation into the
atmospheric column, R, balance heat divergence, and the relatively weak contribution from sensible heat transport from the land surface to the
atmospheric column has been neglected.
Since
atmospheric WV is expected to increase as a result of higher temperatures, the «WV - enhanced» greenhouse effect should cause some of the solar
radiation that would otherwise reach the Earth's surface (in the absence of the enhanced GH effect) to be absorbed in the atmosphere,
where that energy can perhaps be more easily lost to space (the complexity of the climate system permitting).
So it is the ordinary atmosphere that is radiating the
atmospheric LWIR
radiation; except at very high prehaps ionoospheric levels
where the mean free path is such that the GHG species can spontaneously decay to the ground state, before a collision occurs.
...
where the effects of
atmospheric gases is shown on both incomeing and outgoing
radiation.
I plan to make additional postings in this series, addressing some implications of the 9μ to 12μ portion of the longwave
radiation band
where the Atmosphere is nearly - transparent, as well as other
atmospheric «greenhouse» issues.
Since it takes several hundred years for the deep ocean water to cycle up to the top,
where it can be warmed up and lose CO2, it makes sense to suppose that if a warming event is initiated by something else (like changes in the amount and spatial distribution of incoming solar
radiation,) the concomitant rise in
atmospheric CO2 (which would enhance the initial warming) might lag behind by several hundred years.
If not the downwelling
atmospheric radiation where is all the extra energy necessary to balance coming from?
Looking up into the sky, it is clear that SOMETHING is emitting close to a BB
radiation curve @ ~ 265 K (the
atmospheric temperature near the surface), but only above ~ 14 um or below ~ 8 um (which happens to be
where H2o & CO2 emit well).
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).