For example, if global warming were due to increased solar output, we would expect to see all layers of the atmosphere warm, and more warming during the day when the surface is bombarded with solar
radiation than at night.
For example, if global warming were due to increased solar output, we would expect to see all layers of the atmosphere warm, and more warming during the day when the surface is bombarded with solar
radiation than at night.
Not exact matches
Also
at the same time, the much higher daytime skin surface temperature (more
than offsetting the somewhat colder
night - time skin surface temperature which is often ameliorated by condensation and shallow fog layers) causes more infrared
radiation to be emitted to space.
The lapse rate (despite the temperature inversions near the surface
at night and in the winter polar regions) insures that the
radiation of the air absorbed by the surface is slightly less
than the
radiation of the surface absorbed by the air.
However, since days are generally warmer
than nights, the resulting loss of heat by
radiation at night is much smaller
than the energy reflected by clouds during daytime.
When DLR from a clear sky (either
at night or by day) is present it does not significantly decrease upward
radiation in the way that a cloud does and it increases evaporation by adding energy to the interacting layer (the top 10 microns) and then allowing maximum convection rather
than suppressing it in the way that a cloud does.
Warming is greater in the northern hemisphere, over land, and
at night, greater in the troposphere and cooler in the stratosphere, all indications of greenhouse warming rather
than warming from solar
radiation changes or other «natural» causes.
IF back
radiation existed and if there was some 333 w / m ^ 2 of back
radiation beating down on the ground, the black marble slaps should be significantly warmer
than the white marble slaps
at night or on cloudy days.
Clouds make warmer
nights because the clouds are usually warmer
than the normal air temperature
at that altitude and therefore the surface's rate of loss by
radiation upward will be less leaving you with a warmer
than normal
night.
wayne said: Clouds make warmer
nights because the clouds are usually warmer
than the normal air temperature
at that altitude and therefore the surface's rate of loss by
radiation upward will be less leaving you with a warmer
than normal
night.
In the particular instance of so - called back
radiation the reality is that if you point an IR spectrometer up
at the
night sky photons of far higher energy
than the cosmic microwave background are hitting it.
Tyndall had pointed out more
than a century back that basic physics declared that the greenhouse effect would act most effectively
at night, as the gases impeded
radiation from escaping into space.