Composite structure of tropical cyclones in the SW Indian Ocean

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dc.contributor.advisorJury, Mark Ren_ZA
dc.contributor.authorParker, Bhawoodien Abbasmiaen_ZA
dc.date.accessioned2016-05-09T09:03:07Z
dc.date.available2016-05-09T09:03:07Z
dc.date.issued1994en_ZA
dc.description.abstractThis work examines SW Indian Ocean tropical cyclone (TC) structure as a function of movement using ECMWF gridded data. Analyses of the mean summer climate for the period 1987­ 1992 shown that conditions conducive to the development ofTCs are present between the latitudes 5° and 15°S. Six westward moving TCs are selected to form the westward moving composite TC and four are used in the recurving TC composite from 3-days before the maximum surface intensity to 1­ day after. The westward moving composite was found to have a steady TC signature. Comparisons were made with TC Firinga which passed near Mauritius on 29 January 1989. The recurving TC composite was found to exhibit rapid growth with sharp parameters tendencies. Interaction with a sub­ tropical trough is seen in both TC composites. Upper level westerly winds create effective uplift which strengthens the recurving TC on the poleward side. Spectral analysis of a rainfall index compiled from Mauritius data demonstrates spectral peaks at the seasonal and intra-seasonal scale. Three peaks were identified. one within the 40-60 day Madden­ Julian Oscillation. one at 23 days and one with a 16 day oscillation. The 23 day oscillation was found to have a highest spectral power. The results of TC and rainfall analyses offer useful insights to the climate and weather of the SW Indian Ocean.en_ZA
dc.identifier.apacitationParker, B. A. (1994). <i>Composite structure of tropical cyclones in the SW Indian Ocean</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Oceanography. Retrieved from http://hdl.handle.net/11427/19524en_ZA
dc.identifier.chicagocitationParker, Bhawoodien Abbasmia. <i>"Composite structure of tropical cyclones in the SW Indian Ocean."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Oceanography, 1994. http://hdl.handle.net/11427/19524en_ZA
dc.identifier.citationParker, B. 1994. Composite structure of tropical cyclones in the SW Indian Ocean. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Parker, Bhawoodien Abbasmia AB - This work examines SW Indian Ocean tropical cyclone (TC) structure as a function of movement using ECMWF gridded data. Analyses of the mean summer climate for the period 1987­ 1992 shown that conditions conducive to the development ofTCs are present between the latitudes 5° and 15°S. Six westward moving TCs are selected to form the westward moving composite TC and four are used in the recurving TC composite from 3-days before the maximum surface intensity to 1­ day after. The westward moving composite was found to have a steady TC signature. Comparisons were made with TC Firinga which passed near Mauritius on 29 January 1989. The recurving TC composite was found to exhibit rapid growth with sharp parameters tendencies. Interaction with a sub­ tropical trough is seen in both TC composites. Upper level westerly winds create effective uplift which strengthens the recurving TC on the poleward side. Spectral analysis of a rainfall index compiled from Mauritius data demonstrates spectral peaks at the seasonal and intra-seasonal scale. Three peaks were identified. one within the 40-60 day Madden­ Julian Oscillation. one at 23 days and one with a 16 day oscillation. The 23 day oscillation was found to have a highest spectral power. The results of TC and rainfall analyses offer useful insights to the climate and weather of the SW Indian Ocean. DA - 1994 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1994 T1 - Composite structure of tropical cyclones in the SW Indian Ocean TI - Composite structure of tropical cyclones in the SW Indian Ocean UR - http://hdl.handle.net/11427/19524 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/19524
dc.identifier.vancouvercitationParker BA. Composite structure of tropical cyclones in the SW Indian Ocean. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Oceanography, 1994 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/19524en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Oceanographyen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherOceanographyen_ZA
dc.titleComposite structure of tropical cyclones in the SW Indian Oceanen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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