A. Governing equations of the model   d. Radiation up previous next
A.d.v. Optical paremeters of dust

The values of band width and optical parameters of dust considered in this study are shown in Table 5. The 5-11.6 μm infrared dust opacity is obtained by dividing the visible dust opacity by the visible to infrared opacity ratio , which is set to be 2. (Forget, 1998). The 20-200 μm infrared dust opacity is calculated by using and the value of shown in Table 5.

The reason why the infrared dust opacity is not derived by using equation (A.51) directly is that the visible to infrared opacity ratio calculated by using the extinction efficiency listed in table 5 does not agree with observation results well (Zurek,1982). The disagreement results from that the properties of dust whose extinction effect in visible wavelength is larger than that in infrared are not revealed (Zurek, 1982; Forget ,1998).


Table 5: The band width and optical parameters of dust. Qe,0.67μ m = 3.04.
  band
(μm)
band
(cm-2)
visible 0.1-5 2000-105 1.0 0.920 0.55
infrared 1 5-11.6 870-2000 0.253 0.470 0.528
infrared 2 20-200 50-500 0.166 0.370 0.362


A numerical simulation of thermal convection in the Martian lower atmosphere.
Odaka, Nakajima, Ishiwatari, Hayashi,   Nagare Multimedia 2001
up previous next