LJ Grace had a similar question at June 4th. I went into the matter and gave him some
answer by my post Re: about atmosphere and sound (LJ G) - Xanthos 08:59:29 6/04/97
Composition of Mars atmosphere:
Carbon Dioxide (C02) ...95.32% / Nitrogen (N2) ...2.7% / Argon (Ar) ...1.6%
Oxygen (O2) ...0.13% / Carbon Monoxide (CO) ...0.07% / Water (H2O) ..0.03%
Neon (Ne) ...0.00025% / Krypton (Kr) ...0.00003% / Xenon (Xe) ...0.000008%
Ozone (O3) ...0.000003% .
The Atmospheric pressures is seasonally changing from 7.3 and 10.8 millibars
(landing site Viking 2). That's about 1% of the air pressure at Earth at sea-level.
At top of Olympus Mons (Alt. 27 km) atmospheric pressure is about 1 millibars.
If I interprete the Viking data correctly, Atmospheric pressure at 22 deg.north has
now reached its seasonal minimum tending to rise.
I had to stick on it to find the appropriate altitude at Earth, where the atmospheric
pressure is about 10 millibars and I've come up with that:
Atmosphere pressure at Earth falls to a tenth about each 17 km, reaching 100 millibar
at the tropo-pause, 10 millibar at an altitude of 34 km, which is right in the middle of
the stratosphere, 1 millibar at 50 km, that is at the strato-pause, and 0,001 millibar at
an altitude of 100 km. Temperature at an altitude of 35 km is about minus 50 degree C.
Temperature at Mars varies from minus 130 degree at the South Pole to plus 25 degree
Celsius at equator shortly after noon. Temperature reaches minus 80 degree Celsius at
equator at night.
When I studied Mars date in the beginning of March, there had been pretty exactly the
date of summer begin at the northern Mars hemisphere. AS a Mars year lasts 687 days,
a season duration is about 180 days, and because of stronger Mars elliptic summer at the
northern hemisphere lasts meteorologically longer with a higher temperature than at the
southern hemisphere. As Mars inclination is 25 degrees and Olympus Mons is located at
134 deg.west, 18 deg.north, Mars Today at http://www-mgcm.arc.nasa.gov/ shows fair
weather with little to none wind coming from the west.
Sorry, no information about nylons until now.
m.f.g.
X