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Climatological Characteristics of the Jet Streams over West Africa

Title: Climatological Characteristics of the Jet Streams over West Africa.
Name(s): Suk, Jonathan David, author
Nicholson, Sharon E., professor directing thesis
Fuelberg, Henry E., committee member
Cai, Ming, committee member
Department of Earth, Ocean and Atmospheric Sciences, degree granting department
Florida State University, degree granting institution
Type of Resource: text
Genre: Text
Issuance: monographic
Date Issued: 2007
Publisher: Florida State University
Place of Publication: Tallahassee, Florida
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: This paper examines the climatology of the major jet steams over West Africa. Three prominent jets occur at varying heights in the atmosphere, and while each jet is zonal in its flow, their sizes, magnitudes, and directions vary greatly. The Tropical Easterly Jet is shown to be the strongest and most consistent in its location at approximately 200 to 150 hPa. As its name implies, this jet stream consists of easterly flow and has been the topic of many studies over the Tibetan Plateau and Indian Ocean due to its relationship with the Indian Monsoon. On a smaller scale, the African Easterly Jet is prominent over West Africa at approximately 700 to 600 hPa. Although it is associated with the African Monsoon, its strength is related to the temperature contrast between the dry desert to its north, and the cool, moist south-westerlies to the south. The third jet stream is the only one that is westerly in direction. It is the least studied of the three jets. The Low Level Westerlies are located between 1000 and 850 hPa. Although they exhibit a smaller velocity, they are believed to exert a significant influence on the precipitation pattern over West Africa. The goal of this project is to determine the climatological characteristics of the three jet streams, especially during the summer months of June, July, August, and September. Along with building a database to analyze the climatological trends of the jets, their interrelationships are also studied. The speed of the Low Level Westerlies is shown to have a significant correlation with the speed of the Tropical Easterly Jet. And, although the African Easterly Jet occurs in the center of the atmospheric column between the other two jets, it does not have a significant relationship to either of the jets located above and below. The conclusions of this paper naturally lend themselves to further research to help explain not only the reason why the Tropical Easterly Jet and the Low Level Westerlies are related, but also the influence that these systems have on the local environment. In addition, future research should determine the larger scale implications of each jet's location in relation to the other jet streams
Identifier: FSU_migr_etd-0400 (IID)
Submitted Note: A Thesis submitted to the Department of Meteorology in partial fulfillment of the Requirements for the degree of Master of Science.
Degree Awarded: Degree Awarded: Spring Semester, 2007.
Date of Defense: Date of Defense: December 15, 2006.
Keywords: Jet Stream, Africa, Tropical Easterly Jet, African Easterly Jet
Bibliography Note: Includes bibliographical references.
Advisory committee: Sharon E. Nicholson, Professor Directing Thesis; Henry E. Fuelberg, Committee Member; Ming Cai, Committee Member.
Subject(s): Meteorology
Persistent Link to This Record:
Host Institution: FSU

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Suk, J. D. (2007). Climatological Characteristics of the Jet Streams over West Africa. Retrieved from