Scattering

Rayleigh scattering involves particles which are much smaller than the incident 
wavelength.  The cross-section is well known, and the effect of this 
transmission loss process will be included in our retrieval technique.  Mie 
scattering involves particles which are comparable or larger than the incident 
wavelength.  The size, shape and density of the scattering molecule all 
contribute to the effect.  A simple Mie scattering model will be included in our 
analysis.  A substantial increase to the aerosol layer at 10-15 km may be 
detrimental to our results below this altitude.  Times of major volcanic 
eruption should be avoided, which is possible since our mission is of such short 
duration.  The effects of polar stratospheric clouds (PSCs) will be analyzed 
further.  It is as yet unclear whether some science is attainable from a PSC 
event.