Clouds

Clouds definition

Possibility of 2 superimposed cloud layers with the following characteristics

Effective radius, liquid water content and MODTRAN cloud equivalence

New hexagonal ice cristal cirrus cloud database
(database developped by the Laboratoire d’Optique Atmosphérique)

	Phase function examples

Scattered radiance by a cirrus cloud as seen by an observer on the ground face to the sun:
22° halo apparition

post-treated image / single scattering only / no direct sun radiation component

scale : log10(radiance W/m².sr.cm^-1)