Document Details

Document Type : Thesis 
Document Title :
STUDY OF KINETIC ENERGY BUDGET DURING THE INTERACTION BETWEEN TROPICAL AND MIDDLE LATIUDE ATMOSPHERIC SYSTEM
دراسة ميزانية طاقة الحركة أثناء التفاعل بين نظاميين جويين أحدهما مداري والآخر من العروض الوسطى
 
Subject : Faculty of Meteorology, Environment and Arid Land Agriculture 
Document Language : Arabic 
Abstract : Although the dynamics associated with scale interaction are not yet well understood, the relationship of various types of energy transformation is of great importance. The behavior of the ever-changing migratory cyclone requires an understanding of the various physical processes associated with the cyclone as well as interaction with its environment. One way of enhancing this understanding is through detailed diagnostic energy analyses. The common approach which can be used to explain kinetic energy exchange processes associated with a moving cyclone system is via computation of energy budget terms for an area containing the cyclone during the period of interest. In the present work energy studying the kinetic energy budget and the relative contribution of divergent and rotational wind components to the kinetic energy budget of a cyclonic system are the main goal. Historical reviews about the kinetic energy budget, Mediterranean cyclogensies, Sudan Monsoon Low and the interaction between middle latitude and tropical cyclones have been considered in Chapter One. Chapter Two is concerned with theories, methodology and the data used in our study. Synoptic discussion of our case study and the role of the polar and subtropical jets have been introduced in Chapter three. Also, an analysis of the kinetic energy budget and the relative contribution of divergent and rotational wind components to the kinetic energy budget of a case of winter cyclogensies have been investigated in Chapter Three. Analysis of the kinetic energy budget for this cyclone shows that the development occurred as cold fresh air is advected to the rear of the system. It is found that horizontal flux convergence constitutes the major energy source and is the main cause for maintaining the strength of the upper tropospheric jet maxima. Generation of kinetic energy via cross-counter flow is a persistent sink at the most days. Dissipation of kinetic energy, computed as a residual, has local maxima both in the lower troposphere and near the jet stream level. Spatial fields of the energy terms show that the most intense energy processes occur associated with deep cyclogenesis. The vertical transfer of kinetic energy acts as s source of kinetic energy to middle troposphere and lower stratosphere. The divergent component contributes about 6% of the total kinetic energy but nearly 13% of the flux convergence of total kinetic energy during the lifetime of our cyclone. 
Supervisor : dr. 
Thesis Type : Master Thesis 
Publishing Year : 1430 AH
2009 AD 
Co-Supervisor : dr. 
Added Date : Monday, December 28, 2009 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
عصام محمد الغامديALGAMDI, ESSAM MOHAMADResearcherMaster 

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