# Browse Dissertations and Theses - Atmospheric Sciences by Issue Date

• (1989)
In the past the best models of raindrop shapes were based on a perturbation form of Laplace's formula valid only for small amplitude distortion from the effect of an aerodynamic pressure around a sphere. In contrast, the ...
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• (1989)
The evolution of atmospheric baroclinic waves is investigated by a six-layer forced dissipative quasi-geostrophic $\beta$-plane channel model. In the control run, the model has: (i) a realistic zonal thermal forcing, (ii) ...
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• (1990)
A numerical cloud model in both two-dimensional and three-dimensional form is used to investigate the dynamical differences between non-squall and squall line convection in the tropics. Two-dimensional simulations with ...
PDF (9MB)
• (1990)
Tornadoes pose threats to lives and property, and accurately issuing warnings of their occurrence represents a challenge to operational meteorologists. One tool that will become increasingly important in responding to this ...
PDF (10MB)
• (1990)
The first part of this thesis is a study of the dynamics of storm tracks from the perspective of local instability of a class of zonally inhomogeneous basic jet streams. An unstable local mode consists of a group of dominant ...
PDF (8MB)
• (1990)
One of the more spectacular and elusive events of nature is the tornado. Usually spawned by a highly organized, lasting, and rotating thunderstorm called a "supercell", tornadoes are one of the most destructive atmospheric ...
PDF (9MB)
• (1991)
The principal objective of this study is to determine whether or not the penetration of a passive tracer is analogous to the penetration of a greenhouse-gas-induced heating.
PDF (16MB)
• (1991)
The applicability of linear models in studying the observed stationary waves is considered. In particular, the time-mean effects of eddy fluxes on the response of the atmosphere to tropical thermal forcing are examined by ...
PDF (5MB)
• (1991)
In this thesis, the sensitivity of the Earth's climate is studied by modeling past climatic variations with two-dimensional seasonal energy balance model. This thesis consists of two parts. The first part is a study of the ...
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• (1991)
Knowledge of raindrop shape is crucial to analyses of microwave scattering from precipitation, including the use of polarization radar in inferring the rainfall rate. The equilibrium shape of a water drop falling in air ...
PDF (6MB)
• (1991)
Clouds and precipitation play very active roles in weather systems and influence our daily life significantly. A fundamental entity involved in the precipitation processes is the raindrop. As is common to liquid masses ...
PDF (7MB)
• (1992)
The following problems: (1) The effects of wave transience on the propagation of planetary waves in the stratosphere; (2) The coupling of the equatorial and extratropical quasi-biennial oscillations; and (3) The propagation ...
PDF (6MB)
• (1994)
The main objective of this study is to explore the dynamics of storm tracks in the context of a three-layer hemispheric linear-balanced model. We establish first how the instability properties of the relevant background ...
PDF (10MB)
• (1994)
A coupled ice-ocean model of the Arctic Ocean and adjacent seas is developed in order to study the effects of anomalies of precipitation and river runoff on sea ice. A dynamic-thermodynamic sea ice model is coupled to an ...
PDF (5MB)
• (1994)
The goal of the present research was to investigate the low frequency modes of variability in the observed atmosphere and compare those to the counterpart modes in a Global Climate Model (GCM). As a means to accomplish ...
PDF (14MB)
• (1995)
Non-supercell tornado is a name given to a class of tornadoes which occur with deep moist convection not displaying the strong mid-level rotation found in supercell thunderstorms. In recent years the severe storms community ...
PDF (9MB)
• (1996)
This study is an investigation of the dynamics of the variabilities of the zonal mean atmospheric circulation induced by the variation of the sea surface temperature (SST) and by the nonlinear interaction between unstable ...
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• (1996)
The 10-11 June 1985 squall line system with trailing stratiform precipitation observed during the Oklahoma PRE-STORM project has been numerically simulated using the three-dimensional cloud resolving nonhydrostatic COMMAS ...
PDF (9MB)
• (1996)
A great deal has been learned in the past 20 years from observations and numerical simulation of thunderstorms. The relationship between the character of isolated convection and the in-situ buoyancy and shear profiles has ...
PDF (8MB)
• (1996)
The AMIP simulation from 1979 to 1988 by the UIUC 7-layer tropospheric general circulation model (GCM), using observed sea surface temperatures, did not reproduce the well-organized, intraseasonal oscillations that are ...
PDF (16MB)