"Matthew Montchalin" skrev i en meddelelse
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snip

|I'll take that by vapor you mean condensed water or ice particles in the
|air, like a cloud?

Well, I am curious about that also. Can't the ice particles stick to
the dust in the area, causing a snow of sorts - even if it is rather
sparse - to fall on the ground?

I have seen pictures of rime, but wasn't that from another mission?

|I believe the atmosphere holds 0,03% H2O-gas (don't whip me on details)
|The maximum contents of H2O-gas is dependant on temperature (dewpoint
|temperature). If H2O-gas is evaporated/sublimed during day when
|temperature and dewpoint is 'high', it follows that it may condense
|to night to ice-dew or to ice-crystals in a clouds.

Doesn't the CO2 regularly sink down at night, seeing as how the
temperature tends to drop? Every night, there ought to be *some*
kind of condensation of H20, CO2, and dust particles, what there
are of them.

I don't know weather the condensation of CO2 occur outside of the poles, but
the low night-temperature could still make a journal shift of pressure and
windpattern.

Carsten