|
3.a.ii. Ground and surface temperature
|
Figure 3c shows the diurnal changes of horizontal
mean vertical profiles of ground temperature, surface temperature, and
atmospheric temperature (at approximately 1.5 m height). Ground
temperature has a diurnal change that is nearly localized within the
diurnal skin depth δd from the surface. Surface
temperature has a diurnal change with an amplitude of approximately
100 K. Daytime surface temperature can be roughly estimated by the
balance between absorbed solar radiation and emitted infrared
radiation at the surface. The diurnal changes of surface temperature
and atmospheric temperature at approximately 1.5 m height are similar
to those observed at the site of Viking Lander 1 (at 1.6 m height,
Hess et al., 1977).
|
|
Figure 3c: (Left panel) Vertical profiles of horizontal mean
ground temperature. Profiles are from 08:00 to 04:00 LT every 4
hours. Vertical axis is normalized by the diurnal skin depth. (Right
panel) Diurnal change of horizontal mean surface temperature (red
line) and atmospheric temperature (blue line) at approximately 1.5 m
every 1 hour. Each figure is for the dust-free case on day 6.
|
|
