The Intertropical Convergence Zone over the Middle East and North Africa: Detection and Trends

Handle URI:
http://hdl.handle.net/10754/293680
Title:
The Intertropical Convergence Zone over the Middle East and North Africa: Detection and Trends
Authors:
Scott, Anna A.
Abstract:
This thesis provides an overview of identifying the Intertropical Convergence Zone (ITCZ) in the Middle East and North Africa (MENA) region. The ITCZ is a zone of wind convergence around the equator that coincides with an area of intense precipitation that is commonly termed a tropical rainbelt. In Africa, these two concepts are frequently confounded. This work studies the correlation between precipitation and commonly used ITCZ indicators. A further attempt is made to detect movement in the African ITCZ, based on earlier paleontological studies showing historical changes in precipitation. Zonally averaged wind convergence is found to be the most reliable indicator of the African ITCZ, one having a low correlation with zonally averaged precipitation. Precipitation is found only to be a reliable indicator for the African ITCZ in zones near the wind convergence, which reaches as far north as 20_N in the summer. No secular change in location of the African ITCZ is found for the time of available data. Finally, historical data shows that any increase in precipitation in the Sahel, a region where precipitation is driven by the ITCZ, is mildly negatively correlated with precipitation in the rainbelt area, suggesting that shifts in the ITCZ result in a widening of the precipitation profile as well as a shift of the entire zone.
Advisors:
Stenchikov, Georgiy ( 0000-0001-9033-4925 )
Committee Member:
Kalenderski, Stoitchko; Keyes, David E. ( 0000-0002-4052-7224 ) ; McCabe, Matthew ( 0000-0002-1279-5272 )
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Program:
Applied Mathematics and Computational Science
Issue Date:
May-2013
Type:
Thesis
Appears in Collections:
Applied Mathematics and Computational Science Program; Theses; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.advisorStenchikov, Georgiyen
dc.contributor.authorScott, Anna A.en
dc.date.accessioned2013-06-09T12:13:36Z-
dc.date.available2013-06-09T12:13:36Z-
dc.date.issued2013-05en
dc.identifier.urihttp://hdl.handle.net/10754/293680en
dc.description.abstractThis thesis provides an overview of identifying the Intertropical Convergence Zone (ITCZ) in the Middle East and North Africa (MENA) region. The ITCZ is a zone of wind convergence around the equator that coincides with an area of intense precipitation that is commonly termed a tropical rainbelt. In Africa, these two concepts are frequently confounded. This work studies the correlation between precipitation and commonly used ITCZ indicators. A further attempt is made to detect movement in the African ITCZ, based on earlier paleontological studies showing historical changes in precipitation. Zonally averaged wind convergence is found to be the most reliable indicator of the African ITCZ, one having a low correlation with zonally averaged precipitation. Precipitation is found only to be a reliable indicator for the African ITCZ in zones near the wind convergence, which reaches as far north as 20_N in the summer. No secular change in location of the African ITCZ is found for the time of available data. Finally, historical data shows that any increase in precipitation in the Sahel, a region where precipitation is driven by the ITCZ, is mildly negatively correlated with precipitation in the rainbelt area, suggesting that shifts in the ITCZ result in a widening of the precipitation profile as well as a shift of the entire zone.en
dc.language.isoenen
dc.subjectITCZen
dc.subjectCLIMATEen
dc.subjectAFRICAen
dc.subjectPRECIPITATIONen
dc.subjectCONVERGENCEen
dc.titleThe Intertropical Convergence Zone over the Middle East and North Africa: Detection and Trendsen
dc.typeThesisen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
thesis.degree.grantorKing Abdullah University of Science and Technologyen_GB
dc.contributor.committeememberKalenderski, Stoitchkoen
dc.contributor.committeememberKeyes, David E.en
dc.contributor.committeememberMcCabe, Matthewen
thesis.degree.disciplineApplied Mathematics and Computational Scienceen
thesis.degree.nameMaster of Scienceen
dc.person.id118472en
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