The Cirrus Clouds Atmospheric Infrared Radiative Transfer

The reflective and transmittance characteristics of the cirrus atmosphere with considering the thermal radiation and reflectance of the earth surface have been simulated and calculated by using Discrete Ordinate Radiative Transfer method(DISORT)to couple atmospheric molecular absorption and scattering. The influence of the cirrus optical thickness, particle effective radius, surface thermal emission and different atmospheric models to cirrus radiation characteristics have also been discussed in the infrared band. The results show that the cirrus radiation characteristics are strongly influenced by surface thermal emission and atmospheric model. The reflectance of cirrus decreases with the increase of the optical thickness, but barely changes with particle effective radius.