Granger causality of the local Hadley cell and large-scale cloud cover over South Africa

dc.contributor.authorMahlobo, Dawn D.
dc.contributor.authorNdara, Thando
dc.contributor.authorGrab, Stefan W.
dc.contributor.authorEngelbrecht, Francois A.
dc.date.accessioned2020-05-21T06:40:22Z
dc.date.available2020-05-21T06:40:22Z
dc.date.issued2019-09
dc.description.abstractThis study demonstrates that Hadley cell dynamics could be used as a proxy to determine cloud cover and thus solar energy potential over South Africa. Granger causality was used to investigate causal interactions between the Hadley cell and cloud cover for the period 1980-2015, and such links were established. Areas of strong causality are found over the northwestern parts of South Africa. Moreover, weak causality from cloud cover to the Hadley cell does exist, with vertical velocity being the main variable responsible for this causality, which hence indirectly links cloud cover to Hadley cell causality. SIGNIFICANCE: Hadley cell dynamics may be used to identify regions of cloudlessness over South Africa. Hadley cell dynamics may further be used as a proxy for cloud cover towards understanding the solar energy potential in South Africa within the context of climate variability and change.en_ZA
dc.description.departmentGeography, Geoinformatics and Meteorologyen_ZA
dc.description.librarianpm2020en_ZA
dc.description.sponsorshipNational Research Foundation (South Africa)en_ZA
dc.description.urihttps://www.sajs.co.zaen_ZA
dc.identifier.citationMahlobo, D.W., Ndara, T., Grab, S.W. et al. 2019, ' Granger causality of the local Hadley cell and large-scale cloud cover over South Africa', South African Journal of Science, vol. 115, no. 9-10, pp. 41-50.en_ZA
dc.identifier.issn1996-7489 (online)
dc.identifier.issn0038-2353 (print)
dc.identifier.other10.17159/sajs.2019/5724
dc.identifier.urihttp://hdl.handle.net/2263/74666
dc.language.isoenen_ZA
dc.publisherAcademy of Science of South Africaen_ZA
dc.rights© 2019. The Author(s). Published under a Creative Commons Attribution Licence.en_ZA
dc.subjectHadley circulationen_ZA
dc.subjectMass fluxen_ZA
dc.subjectTotal cloud coveren_ZA
dc.subjectSolar energy potentialen_ZA
dc.subjectSouth Africa (SA)en_ZA
dc.titleGranger causality of the local Hadley cell and large-scale cloud cover over South Africaen_ZA
dc.typeArticleen_ZA

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