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Filtering by: Funding statement This work was supported by a grant from the Planetary Atmospheres Program of NASA and a Cooperative Agreement with NASA Ames Research Center. Remove constraint Funding statement: This work was supported by a grant from the Planetary Atmospheres Program of NASA and a Cooperative Agreement with NASA Ames Research Center. Degree Field Atmospheric Sciences Remove constraint Degree Field: Atmospheric Sciences

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  • Modeling of forced planetary waves in the Mars atmosphere

    Creator:
    Hollingsworth, Jeffery L.
    Abstract:
    Mariner 9 and Viking spacecraft observations during the 1970's have provided evidence for planetary-scale wave-like disturbances in the Mars atmosphere. It has been suggested that possible sources of the wave activity are dynamical instabilities (e.g., barotropic and/or baroclinic instabilities). An other candidate source is forced, quasi-stationary planetary waves. In connection...
    Resource Type:
    Dissertation
    Full Text:
    gift to constantly change and grow with you. Most of this research has been supported by the NASA

  • A mesoscale model study of atmospheric circulations for the northern hemisphere summer on Mars

    Creator:
    Tyler, Daniel Jr
    Abstract:
    The Penn-State/NCAR MM5 mesoscale model was adapted for mesoscale simulations of the Martian atmosphere (the OSU MMM5). The NASA Ames Mars GCM provides initial and boundary conditions. High-resolution maps for albedo, thermal inertia and topography were developed from Mars Global Surveyor (MGS) data; these baseline maps are processed to appropriate...
    Resource Type:
    Dissertation
    Full Text:
    doctoral research. Initial and boundary conditions for the OSU MMM5 are provided by a version of the NASA

  • An examination of structure and parameterization of turbulence in the stably-stratified atmospheric boundary layer

    Creator:
    Ruscher, Paul Harold
    Abstract:
    The very stable boundary layer is a region of the atmosphere typified by large vertical gradients of temperature and momentum. Analysis of very stable atmospheric flows is complicated by the presence of nonlinear interactions among gravity waves, shear-driven overturning circulations, two-dimensional vortical modes and intermittent turbulence in various stages of...
    Resource Type:
    Dissertation
    Full Text:
    atmosphere and with data from Wangara day 33. A simulation over snow cover is also examined. The tests

  • Baroclinic eddies in the Martian atmosphere : a general circulation model study

    Creator:
    Matheson, Mark
    Abstract:
    A variety of general circulation model experiments are performed to investigate the influence of seasonality and topography on the strength of baroclinic eddies in the Martian atmosphere. Three different models are used: a full physics model, a simplified physics model, and a zonally symmetric simplified physics model. All three models...
    Resource Type:
    Masters Thesis
    Full Text:
    all based closely on the MGCM developed at the NASA Ames Research Center. A thorough description of

  • Tracer transport in the Martian atmosphere as simulated by a Mars GCM

    Creator:
    Walsh, Thomas D.
    Abstract:
    This paper investigates the atmospheric circulation and transport characteristics of the Martian atmosphere (as modeled by a Mars GCM) for three sets of conditions. The conditions are based on a combination of season and dust loading (as parameterized by the optical depth, τ). The first experiment is for the Northern...
    Resource Type:
    Masters Thesis
    Full Text:
    contain the results of this research, followed by a final chapter summarizing the results and drawing

  • INDOEX aerosol optical depths and radiative forcing derived from AVHRR

    Creator:
    Tahnk, William Richard
    Abstract:
    The Indian Ocean Experiment (INDOEX) had as a primary objective determining the radiative forcing due to anthropogenic aerosols over climatologically significant space and time scales: the Indian Ocean during the winter monsoon, January-March. During the winter monsoon, polluted, low-level air from the Asian subcontinent blows over the Arabian Sea and...
    Resource Type:
    Dissertation
    Full Text:
    supported by a National Science Foundation Science and Technology Center grant to the Scripps Institute of

  • Diurnal and subdiurnal variability in the Mars Pathfinder Presidential meteorology sessions

    Creator:
    Bennett, Scott
    Abstract:
    The Mars Pathfinder (MPF) arrived on the Martian surface on 4 July 1997 to become only the third successful landed mission to Mars, recording surface meteorological data intermittently over a period of 83 Martian days ("sols"). The in situ observations made by the MPF meteorology (MET) experiment were recorded at...
    Resource Type:
    Masters Thesis
    Full Text:
    Administration in the form of a NASA Space Grant Fellowship for the first year and a graduate research

  • Buoy and satellite observation of wind induced surface heat exchange in the intraseasonal oscillation over West Pacific and Indian Ocean

    Creator:
    Araligidad, Nilesh
    Abstract:
    The importance of wind-driven latent heat fluxes for supporting tropical intraseasonal precipitation variability is analyzed. Tropical intraseasonal variability in the west pacific and Indian ocean is analyzed for northern and southern hemisphere summer during 1999-2005 using satellite and buoy observations. A composite analysis of QuikSCAT ocean vector winds and TRMM...
    Resource Type:
    Masters Thesis
    Full Text:
    , captured by a second vertical heating mode with out-of-phase relationship between the lower and upper

  • A complex signal to noise problem : determining the aerosol indirect effect from observations of ship tracks in AVHRR data

    Creator:
    Walsh, Christopher D.
    Abstract:
    Cloud reflectivity is a function of cloud liquid water content and droplet number concentration. Since cloud droplets form around pre-existing aerosol particles, cloud droplet number concentration depends on the availability of particles that can serve as cloud condensation nuclei. Given constant liquid water amount, increased availability of cloud condensation nuclei...
    Resource Type:
    Masters Thesis
    Full Text:
    gained or lost liquid water. Part of the work undertaken by Coakley and Walsh (2002) was the

  • Properties of semitransparent upper-level clouds deduced from multispectral imagery data

    Creator:
    Lin, Xijian
    Abstract:
    A multispectral retrieval method is developed on the 100 km regional scale to extract the temperature, particle size, fractional cover and 11-μm emissivity of clouds which may be semitransparent in the infrared based on emitted radiances. The scheme utilizes the nonlinear relationship between emitted radiances when clouds are semitransparent and...
    Resource Type:
    Dissertation
    Full Text:
    graduate study at OSU. Thanks to my parents for their love, and support. This work was supported by NASA