QUESTION:
Has anyone analyzed the tidal components in Mars' diurnal temperature and
pressure variation?

By visual inspection on the data, they are very similar to the Earth's
Ionospheric Total Electron Content diurnal variations, i.e., they possess
mid-moring depression in T and P, and night-time increment/slow-down in T
and P decrement.

ANSWER from Bruce Jakosky on July 18, 1997:
There has been a lot of discussion of the diurnal thermal tide and its role
in affecting the atmospheric pressure and temperature as measured at the
surface.  The primary contribution is from heating of the atmosphere by
sunlight that is absorbed by airborne dust.  In fact, the amplitude of the
diurnal and semi-diurnal tides can be used to infer the amount of dust in
the martian atmosphere.  This analysis from the Pathfinder mission has
resulted in substantial controversy when compared with the Hubble Space
Telescope images of Mars.