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dc.contributor.advisor Few, Arthur A., Jr.
dc.creatorSchmunk, Robert Bradley
dc.date.accessioned 2009-06-04T00:06:31Z
dc.date.available 2009-06-04T00:06:31Z
dc.date.issued 1993
dc.identifier.citation Schmunk, Robert Bradley. "A zonally and annually averaged study of potential early Martian atmospheres." (1993) Diss., Rice University. https://hdl.handle.net/1911/16664.
dc.identifier.urihttps://hdl.handle.net/1911/16664
dc.description.abstract Observations of the surface of Mars suggest a high probability of surface water activity in that planet's past. Consequently, many studies of Mars' early atmosphere have attempted to estimate the carbon dioxide level by requiring that surface temperatures be high enough to support surface liquid water. In the main, these studies have employed one-dimensional, radiative-convective climate models capable of considering only a single solar zenith angle, typically chosen to represent a global and annual average. Such models are hence not well suited for considering meridional variations in the temperature profile, which are affected by variations in the orbital obliquity and the meridional redistribution of heat by dynamic processes. I describe modifications to a more complex model, the multi-level energy balance model designed at NASA's Goddard Laboratory for Atmospheric Sciences, which make it suitable for study of an atmosphere with varying carbon dioxide levels. Vertically and meridionally defined, the model includes heating and cooling by radiation, mean meridional circulation, large-scale (baroclinic) and small-scale (convective) eddies, and surface turbulent flux. I present annually-averaged results for an examination of potential atmospheres of early Mars, given that its carbon dioxide level may range from 0 to 500 Pa and the orbital obliquity from 0$\sp\circ$ to 50$\sp\circ.$ These results are compared with those obtained from a radiative-convective model.
dc.format.extent 91 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectAtmospheric sciences
dc.title A zonally and annually averaged study of potential early Martian atmospheres
dc.type Thesis
dc.type.material Text
thesis.degree.department Space Science
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Doctoral
thesis.degree.name Doctor of Philosophy
dc.identifier.callno Thesis Sp. Sci. 1993 Schmunk


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