Physics
Scientific paper
Aug 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3216202s&link_type=abstract
Geophysical Research Letters, Volume 32, Issue 16, CiteID L16202
Physics
29
Biogeosciences: Water/Energy Interactions (1878), Global Change: Water Cycles (1836), Hydrology: Evapotranspiration, Planetary Sciences: Solar System Objects: Mars
Scientific paper
In order to better understand the stability of water on Mars, and factors likely to affect that stability, we have measured the evaporation rate of water in a CO2 atmosphere at 7 mbar and ~0°C in a large environmental chamber that minimizes fluctuation in conditions. The average evaporation rate we measured was 1.01 +/- 0.19 mm/h. This includes correction for water vapor build-up in the chamber, but not the effect of Mars' lower gravity. When corrections for this are applied, our predicted evaporation rate for water on Mars at 0°C and 7 mbar is 0.73 +/- 0.14 mm/h. This is in very good agreement with the value calculated by assuming that evaporation depends on diffusion and buoyancy. The consistency of these results suggests that - at least for these conditions - our approaches to the calculations and the laboratory simulations are reasonable.
Moore Shauntae R.
Sears Derek W. G.
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