Attributes of cut-off low induced rainfall over the Eastern Cape Province of South Africa

dc.contributor.authorMolekwa, Samuel
dc.contributor.authorEngelbrecht, Christina Johanna
dc.contributor.authorRautenbach, Cornelis Johannes de Wet
dc.date.accessioned2015-08-28T09:34:12Z
dc.date.available2015-08-28T09:34:12Z
dc.date.issued2014-10
dc.description.abstractCut-off low (COL) weather systems that are associated with rainfall over the Eastern Cape are considered in this study. COLs are objectively identified and tracked over a 31-year period. Daily rainfall data of 22 evenly distributed stations over the Eastern Cape are utilized. Only COLs with a minimum spatial distribution, defined as more than a third of the rainfall stations that need to report rainfall on at least 1 day of a COL event, are considered for analysis of rainfall attributes. These attributes include the occurrence of COL rain days of different magnitudes, the distribution of the depth and temperature of the COL centres for the rain days of different magnitudes, the associated spatial distribution of rainfall as well as the associated atmospheric circulation. The frequency of COLs over the Eastern Cape has a winter maximum and a summer minimum. COL rain days of small, mediumand large magnitudes occur most frequently during the winter, while small- and medium-magnitude COL rain days experience peaks in autumn and spring, respectively. The low-level flow, and in particular the position of the low/trough, seems to be the determinant factor in the occurrence, magnitude and spatial extent of COL-induced rainfall.en_ZA
dc.description.embargo2015-10-31en_ZA
dc.description.librarianhb2015en_ZA
dc.description.sponsorshipAgricultural Research Council (ARC).en_ZA
dc.description.urihttp://link.springer.com/journal/704en_ZA
dc.identifier.citationMolekwa, S, Engelbrecht, CJ & Rautenbach, CJD 2014, 'Attributes of cut-off low induced rainfall over the Eastern Cape Province of South Africa', Theoretical and Applied Climatology, vol. 118, no.1, pp. 307-318.en_ZA
dc.identifier.issn0177-798X (print)
dc.identifier.issn1434-4483 (online)
dc.identifier.other10.1007/s00704-013-1061-3
dc.identifier.urihttp://hdl.handle.net/2263/49647
dc.language.isoenen_ZA
dc.publisherSpringeren_ZA
dc.rights© Springer-Verlag Wien 2013. The original publication is available at : http://link.springer.comjournal/704.en_ZA
dc.subjectEastern Cape Province, South Africaen_ZA
dc.subjectMinimum spatial distributionen_ZA
dc.subjectWeather systemsen_ZA
dc.subjectCut-off low (COL)en_ZA
dc.subjectWeather systemsen_ZA
dc.titleAttributes of cut-off low induced rainfall over the Eastern Cape Province of South Africaen_ZA
dc.typePostprint Articleen_ZA

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