Physics – Geophysics
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pggp.rept..201c&link_type=abstract
In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1990 p 201-202 (SEE N92-10728 01-91)
Physics
Geophysics
Atmospheric Boundary Layer, Atmospheric Stratification, Diffusivity, Heat Transfer, Latent Heat, Mars (Planet), Mars Atmosphere, Specific Heat, Surface Layers, Thermal Conductivity, Air Flow, Analogies, Binary Data, Gas Mixtures, Parameterization, Substrates, Turbulence, Viscosity, Water Vapor
Scientific paper
Researchers extend elements of various terrestrial boundary layer models to Mars in order to estimate sensible heat, latent heat, and momentum fluxes within the Martian atmospheric surface layer. To estimate the molecular viscosity and thermal conductivity of a CO2-H2O gas mixture under Martian conditions, parameterizations were developed. Parameterizations for specific heat and and binary diffusivity were also determined. The Prandtl and Schmidt numbers derived from these thermophysical properties were found to range from 0.78 - 1.0 and 0.47 - 0.70, respectively, for Mars. Brutsaert's model for sensible and latent heat transport within the interfacial sublayer for both aerodynamically smooth and rough airflow was experimentally tested under similar conditions, validating its application to Martian conditions. For the surface sublayer, the researchers modified the definition of the Monin-Obukhov length to properly account for the buoyancy forces arising from water vapor gradients in the Martian atmospheric boundary layer. This length scale was then utilized with similarity theory turbulent flux profiles with the same form as those used by Businger et al. and others. It was found that under most Martian conditions, the interfacial and surface sublayers offer roughly comparable resistance to sensible heat and water vapor transport and are thus both important in determining the associated fluxes.
Clow Gary D.
Haberle Robert M.
No associations
LandOfFree
Characteristics of the Martian atmosphere surface layer does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Characteristics of the Martian atmosphere surface layer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Characteristics of the Martian atmosphere surface layer will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1286435