: References
: Two dimensional anelastic model
: 5 Radiation
The grand temperature is calculated by the 1D thermal conduction equation.

(55) 
where is the grand temperature (K), is the soil density
(kgm), is the specific heat of soil
(JkgK), and
is the thermal conductivity (WmK).
The surface temperature is given by
.
The boundary condition at the surface is given as follows.

(56) 
where is the solar radiative flux at the
surface (the sign of downward flux is positive), is
the surface albedo, is the net infrared radiative
flux emitted from the surface and is the sensible
heat flux (the sign of upward flux is positive).
The lower boundary of the grand surface is given as a insulation boundary.
The values of soil density, thermal conductivity and specific heat are
same as those of standard model of Kieffer et al. (1977).
表 11:
Parameters of ground surface model
Parameters 
Standard values 
Note 

0.25 
Kieffer et al. (1977) 

1650 kgm 
〃 

588 JKkg 
〃 

7.63
JKmsec 
〃 
By using these values, the thermal inertia
is
272 WmsecK
and the diurnal skin depth of
is about 8.2 cm.
: References
: Two dimensional anelastic model
: 5 Radiation
Odaka Masatsugu
平成19年4月25日