Wuwei
Gold Member
- Apr 18, 2015
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I already looked up the mean free path and kept notes:The "mean free path" is meaningless....The energy absorbed by CO2 is lost in centimeters from the surface if not millimeters...if not fractions of millimeters.
How do we know more CO2 is causing warming?
mean free-path length is quite short (and at 15 microns, is very close to 3 meters)....
CO2 heats the atmosphere…a counter view
The mean free path of a surface 15 micron IR photon is less than 2 metres, the extinction height is roughly 10 metres.
Other references:
typically within a few meters, the mean free path at atmospheric
concentrations
very short (a few metres at sea level)
I would call that a radiative greenhouse effect.
Conduction is very small - fractions of a milliWatt. I would think convection is much stronger.and conducted and convected on to the top of the troposphere.
Temperature flow via conduction
Thermal conductivity in air 26 mW / m K
Lapse rate 9.8 C/km. = .0098 C/m Temperature drop per meter
Thermal Conductivity = 26 mW x 0.0098 K = 0.255 mW per meter
It doesn't matter what carries the surface heat to the TOA. The lapse rate does not depend on anything but gravity and specific heat.
Lapse rate = gravitational acceleration / specific heat
.