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AER-RC / LBLRTM

Line-By-Line Radiative Transfer Model by Atmospheric and Environmental Research
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Does LBLRTM consider the self absorption effect of gas molecules at high altitudes? #63

Open StarsTravel opened 3 months ago

StarsTravel commented 3 months ago

When calculating upper atmosphere radiation, the self absorption effect of some gas molecules cannot be ignored, such as below 60km, when O2 molecules have a strong self absorption effect near 1.27um. Does LBLRTM consider this issue and how to set it in the program? image

kcadyper commented 3 months ago

Hi, StartTravel

Were the plots you posted generated with LBLRTM? If yes, then you must have figured out that you can turn the oxygen continuum off by setting the XO2CN to zero.

StarsTravel commented 3 months ago

Hi, StartTravel

Were the plots you posted generated with LBLRTM? If yes, then you must have figured out that you can turn the oxygen continuum off by setting the XO2CN to zero.

This graph is not calculated by LBLRTM, but is a literature on the radiometric levels that take into account and do not take into account the O2 self-absorption effect. Do you mean that by setting the XO2CN you can achieve the self-absorption effect with or without regard to oxygen?

kcadyper commented 3 months ago

Can you clarify what you mean by self absorption? The continuum models the collision induced absorption for O2, i.e., the absorption from interactions with other O2 molecules that induce a dipole moment.

StarsTravel commented 3 months ago

Can you clarify what you mean by self absorption? The continuum models the collision induced absorption for O2, i.e., the absorption from interactions with other O2 molecules that induce a dipole moment.

ok,I try