Document Details

Document Type : Article In Journal 
Document Title :
The role of jet stream in the energy budgets of two different cyclonic syst
دور الرياح النفاثة في ميزانية الطاقة لنظامين مختلفين من المنخفضات الجوية
 
Document Language : English 
Abstract : The role of jet stream in the energy budgets of two different cyclonic systems ABSTRACT Analysis of the kinetic energy budgets for two developing winter-type cyclones is presented. The first case represents a middle latitude cyclone that developed significantly north of the Mediterranean Sea. The development occurred as cold fresh air is advected to the rear of the system. The second situation represents typical middle latitude-tropical wave interaction. The event occurred in the area between a middle latitude cyclone located over Spain and a tropical disturbance west of Africa. The middle latitude cyclone is developed after the interaction. This location is one of the known favorite areas for such interaction. The role of the polar and subtropical jets is discussed. The major contribution to vertical kinetic energy integral comes out due to a persistent upper troposphereic jet stream throughout the period of each cyclone. A large increase in the kinetic energy of the total flow fields occurs during the period of maximum amalgamation between the polar and subtropical jets. Dissipation of kinetic energy is an important source of energy during the life cycle of the two cases. Generation of kinetic energy via cross- contour flow is acting as a source of energy in the second cyclone, while it makes as a persistent sink of energy in the first cyclone. Horizontal flux convergence may act as a sink of energy during the period of each cyclone. 
ISSN : 1523-1661 
Journal Name : AL-Azhar Bull 
Volume : 10 
Issue Number : 2 
Publishing Year : 1419 AH
1999 AD 
Article Type : Article 
Added Date : Monday, January 23, 2012 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
حشمت عبدالباسط محمدMohamed, Heshmat Abdel BassetInvestigatorDoctorateheshmatm@yahoo.com

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