Intra-seasonal convection dynamics over Southwest and Northeast Tanzania : an observational study

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dc.contributor.advisorJury, Mark Ren_ZA
dc.contributor.advisorBrundrit, Geoff Ben_ZA
dc.contributor.authorMpeta, Emmanuel Jonathanen_ZA
dc.date.accessioned2016-05-13T09:35:55Z
dc.date.available2016-05-13T09:35:55Z
dc.date.issued1997en_ZA
dc.description.abstractIntraseasonal convection oscillation over the northeastern and southwestern Tanzania during MAM and DJF seasons respectively are examined using December, 1979 to May, 1994 pentad (5-day mean) Outgoing Longwave Radiation (OLR) as an indicator of convective cloud distribution. Area-averaged OLR indices are derived for the two areas. Time series of OLR indices for MAM and DJF indicate large quasi-periodic OLR fluctuations in some years and small fluctuations in other years. Periodogram analyses results reveal that dominant periodogram values for the oscillations were different in different years over both areas. Dominant periodogram peaks with periods more than 6 pentads (30 days) occurred 40% of the time on the average. Based on the pentad OLR time series plots deep convection and their precursors are composited. The time evolution of composite OLR maps reveal that patterns of low OLR values (indicating deep connection) shift north-eastwards coupled with low OLR values associated with mid-latitude troughs and linked to the ITCZ. Composite of kinematic and thermodynamic parameters associated with deep conJection and precursors are composited.en_ZA
dc.identifier.apacitationMpeta, E. J. (1997). <i>Intra-seasonal convection dynamics over Southwest and Northeast Tanzania : an observational study</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Oceanography. Retrieved from http://hdl.handle.net/11427/19650en_ZA
dc.identifier.chicagocitationMpeta, Emmanuel Jonathan. <i>"Intra-seasonal convection dynamics over Southwest and Northeast Tanzania : an observational study."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Oceanography, 1997. http://hdl.handle.net/11427/19650en_ZA
dc.identifier.citationMpeta, E. 1997. Intra-seasonal convection dynamics over Southwest and Northeast Tanzania : an observational study. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Mpeta, Emmanuel Jonathan AB - Intraseasonal convection oscillation over the northeastern and southwestern Tanzania during MAM and DJF seasons respectively are examined using December, 1979 to May, 1994 pentad (5-day mean) Outgoing Longwave Radiation (OLR) as an indicator of convective cloud distribution. Area-averaged OLR indices are derived for the two areas. Time series of OLR indices for MAM and DJF indicate large quasi-periodic OLR fluctuations in some years and small fluctuations in other years. Periodogram analyses results reveal that dominant periodogram values for the oscillations were different in different years over both areas. Dominant periodogram peaks with periods more than 6 pentads (30 days) occurred 40% of the time on the average. Based on the pentad OLR time series plots deep convection and their precursors are composited. The time evolution of composite OLR maps reveal that patterns of low OLR values (indicating deep connection) shift north-eastwards coupled with low OLR values associated with mid-latitude troughs and linked to the ITCZ. Composite of kinematic and thermodynamic parameters associated with deep conJection and precursors are composited. DA - 1997 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1997 T1 - Intra-seasonal convection dynamics over Southwest and Northeast Tanzania : an observational study TI - Intra-seasonal convection dynamics over Southwest and Northeast Tanzania : an observational study UR - http://hdl.handle.net/11427/19650 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/19650
dc.identifier.vancouvercitationMpeta EJ. Intra-seasonal convection dynamics over Southwest and Northeast Tanzania : an observational study. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Oceanography, 1997 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/19650en_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.titleIntra-seasonal convection dynamics over Southwest and Northeast Tanzania : an observational studyen_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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