A dynamical forecasting perspective on synoptic scale weather systems over southern Africa

Show simple item record

dc.contributor.advisor Van Heerden, J en
dc.contributor.coadvisor Poolman, E.R. en
dc.contributor.postgraduate Dyson, Liesl L.
dc.date.accessioned 2013-09-06T15:30:15Z
dc.date.available 2006-04-07 en
dc.date.available 2013-09-06T15:30:15Z
dc.date.created 2001-04-01 en
dc.date.issued 2000 en
dc.date.submitted 2006-03-27 en
dc.description Dissertation (MSc)--University of Pretoria, 2000. en
dc.description.abstract Heavy rainfall and flooding often occur over South Africa. A high percentage of the heavy rainfall events occur over the eastern interior of South Africa and generally during the late summer (January to March) when the influence of tropical weather systems becomes dominant. Research into forecasting techniques best suited for tropical weather systems over southern Africa has been neglected since the early 1970's. The aim of this research was to develop a Model for the Identification of Tropical Weather Systems (MITS) as well as a Tropical Heavy Rainfall Identification System (THERIS) for operational use in the weather forecasting offices of Southern Africa. This study explains the dynamical properties of tropical weather systems and identifies those variables, which favour the development of heavy rainfall. Three case studies are presented to illustrate the dynamical properties of tropical weather systems. THERIS is tested and verified for historical heavy rainfall events over South Africa. The heavy rainfall events of February 2000 over the northern Provinces of South Africa are discussed and both THERIS and MITS are tested for operational functionality. Results indicate that MITS can be used to identify tropical weather systems and that THERIS determines areas of heavy rainfall. It is recommended that the two products be tested and used operationally. en
dc.description.availability unrestricted en
dc.description.department Geography, Geoinformatics and Meteorology en
dc.identifier.citation Dyson, L.L. 2000, A dynamical forecasting perspective on synoptic scale weather systems over southern Africa, MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/23509> en
dc.identifier.other H560/ag en
dc.identifier.upetdurl http://upetd.up.ac.za/thesis/available/etd-03272006-153324/ en
dc.identifier.uri http://hdl.handle.net/2263/23509
dc.language.iso Eng en
dc.publisher University of Pretoria en_ZA
dc.rights © 2000, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. en
dc.subject Synoptic meteorology south africa en
dc.subject Weather forecasting south africa en
dc.subject UCTD en_US
dc.title A dynamical forecasting perspective on synoptic scale weather systems over southern Africa en
dc.type Dissertation en


Files in this item

This item appears in the following Collection(s)

Show simple item record