CO2 molecules are incapable of
absorbing any radiation above the 15 micron band from the earth's surface.
Not exact matches
Charcoal - black world HD 149026b (illustrated here)
absorbs most of the
radiation it gets from its very nearby star, pushing temperatures to 3700 degrees Fahrenheit,
above the boiling point of lead.
Upon exposing a metallic surface to electromagnetic
radiation that is
above the threshold frequency or threshold wavelength (which is specific to the type of surface and material), the photons are
absorbed and current is produced.
Because the vast plateau at such altitudes
absorbs a huge amount of solar
radiation, the atmospheric layer
above it in summer is much warmer than air at similar elevations over lower land or the oceans.
MOST HELLISH PLANET Charcoal - black world HD 149026b (illustrated here)
absorbs most of the
radiation it gets from its very nearby star, pushing temperatures to 3700 degrees Fahrenheit,
above the boiling point of lead.
Second even if we ignore convection (and assume all warming of the atmosphere is from below, ie no incoming solar
radiation is
absorbed in the atmosphere) it is not the case that the atmosphere temperatures will «pivot» around some fixed level (increasing below it and falling
above it).
If we are talking about clear atmosphere, then no, because the
radiation will be ONLY at exactly those frequencies where the greenhouse gases
above and below
absorb / emit.
This skin of the skin layer would be
absorbing radiation mostly emitted from layers
above where the OLR is emitted.
Regions below TAU = 1 tend to have
radiation absorbed before its exit to space where the opacity is high, and regions
above are thin enough to let
radiation escape to space.
Most UV
radiation is
absorbed above the tropopause, and the UV component of sunlight will varies in greater proportion with changing TSI.
All agree that direct IR
radiation in the main CO2 bands is
absorbed well below 1 km
above the earth.
It depends on each layer receiving and
absorbing radiation from
above and below, and re-radiating half up and half down as heat energy, capable of raising temperature.
This energy is carried aloft by convection where the remainder of the atmosphere is essentially transparent to the emitted
radiation largely because there is next to no water vapour, which is the larger
absorber, in the stratosphere and
above.
Then, especially when there is excessive cloud cover over the oceans, the Sun's energy
absorbed above the clouds can actually make its way down to the ocean surface (and below) warming the oceans by non-radiative processes, not by direct solar
radiation which mostly passes through the thin surface layer and could barely raise the mean temperature of an asphalt paved Earth
above -35 C.
Misleading, inasmuch as the concept of a hot plate assumes an external heat source capable of maintaining an object sitting upon it at a constant temperature elevated
above ambient, where
radiation absorbed is equal to
radiation emitted.
Every blackbody
above 0 K is both emitting and
absorbing thermal
radiation
In other words, * we can observe the increase of CO2 in atmosphere
above the ocean, * CO2
absorbs some part of the outgoing
radiation from the surface of the ocean which increases somewhat the temperature of the air * The increasing of temperature causes the (slight) increase of the (already existing) back
radiation * This (now increased) back
radiation is
absorbed by the surface skin layer of the ocean which means that the energy delivered by the back
radiation to the surface skin layer is now slightly higher * This additional energy will now be distributed over the channels that are participating in the heat transfer from the
absorbing surface skin layer to both the air
above the skin layer and the bulk of the ocean.
I have claimed that, despite the 120 meter extinction, the layers
above the 120 meter distance also contribute to the downwelling
radiation that ultimately reaches the Surface such that, if about 1/2 are due to the first - generation photons being
absorbed and re-emitted, then about 1/4, 1/8, 1/16 and so on are due to higher - generation photons due to emission and absorption, and re-emisson, and so on and on.
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.
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.
So by KT97 if you let the surface be 289K as stated in TFK09 instead of 288K you can take: 67 Wm - 2
absorbed SW by the atmosphere plus 24 Wm - 2 carried upward by thermals (dry conduction / convection) plus 78 Wm - 2 carried upward by evaporation (convection) plus 66 Wm - 2 actual LW
radiation flux upward (
radiation)------ 235 Wm - 2 detected LW upwelling by satellites
above the TOA
I say that your conclusion that CO2
absorbs most of the solar
radiation above the troposphere undermines your belief in increased levels of CO2 leading to global warming.
... that your conclusion that CO2
absorbs most of the solar
radiation above the troposphere undermines your belief in increased levels of CO2 leading to global warming.....
Because of the different intramolecular forces between water molecules as vapor in air, water, and ice, the wavelengths of emission and absorption are shifted; some of the
radiation from the water / ice droplets at the top of a cloud can escape to space because the atmosphere
above it is transparent at its wavelengths, whereas the same
radiation from droplets at the bottom of a cloud will be
absorbed and re-emitted in random directions from the droplets
above, including back down to the originating droplets.
Back
radiation of IR is already
absorbed by H2O
above the oceans, CO2 has no impact.
cementafriend, thanks for bring this up: «If convection occurs before
radiation and the temperature of the atmosphere just
above the surface is the same as the surface then it is clear that
radiation to
absorbing gases (CO2 and water vapour) will be zero because there is no net heat transfer between objects at the same temperature.».
I see the (nearly) black body
radiation above and below those limits due to the H2O and CO2 (and other GHGs) which can (almost perfectly)
absorb those wavelengths.