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Formation and track of tropical cyclones Eline (2000) and Bonita (1996)
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Section of Sustainable Health. School of Atmospheric Science, Nanjing University of Information Science and Technology (NUIST), Nanjing, China.
School of Atmospheric Science, Nanjing University of Information Science and Technology (NUIST), Nanjing, China.
Eduardo Mondlane University, P.O. Box 257, Maputo, Mozambique.
International Water Research Institute, Mohammed VI Polytechnic University, Lot 660, Hay Moulay Rachid, Ben Guerir, Morocco.
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2021 (English)In: Meteorology and atmospheric physics (Print), ISSN 0177-7971, E-ISSN 1436-5065, Vol. 133, no 6, p. 1691-1706Article in journal (Refereed) Published
Abstract [en]

The occurrence of extreme rainfall events over mainland Mozambique associated with tropical cyclones (TC) Eline and Bonita is studied. Bonita caused catastrophic flooding in the central and some parts of northern Mozambique, thus forming the basis of the present study. Results show that the intensity of these TCs was maintained by the easterly wind from the Mascarene High. The northeasterly monsoon wind and northwesterlies from the Benguela current converged at the center of the TC, acting as a moisture source. The rainfall related to the two TCs befell in three stages and its magnitude attenuated progressively from the coastal region toward inland, concurring with the degeneration of the TCs. In stage one, for Eline, rainfall mainly concentrated in Tete, Manica, Niassa, North of Gaza provinces, the coastal Nampula, Zambezia, Sofala and Inhambane provinces. During Bonita’s inner-core circulation landfall, the northern and few parts of central Bonita were directly inundated. In the second stage, for Eline, the center of concentration of rainfall was in the central and southern parts of Mozambique. The mechanisms, including warm-air advection, vertical wind shear, could have contributed at the same time to the lifting vital for the generation of the storm during the second stage. The information herein is essential for future forecasting and monitoring of TC over the Indian Ocean. The findings form a good reference in the understanding of the recent cyclones, Kenneth and Idai that were destructive over Mozambique.

Place, publisher, year, edition, pages
Springer, 2021. Vol. 133, no 6, p. 1691-1706
National Category
Meteorology and Atmospheric Sciences
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URN: urn:nbn:se:umu:diva-188397DOI: 10.1007/s00703-021-00835-9ISI: 000701365400001Scopus ID: 2-s2.0-85115951226OAI: oai:DiVA.org:umu-188397DiVA, id: diva2:1601187
Available from: 2021-10-07 Created: 2021-10-07 Last updated: 2022-04-26Bibliographically approved

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Armando, Chaibo Jose

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