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Rainfall Mechanisms for the Dominant Rainfall Mode over Zimbabwe Relative to ENSO andor IODZM
Joint Authors
Manatsa, Desmond
Mukwada, Geoffrey
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-05-03
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Medicine
Information Technology and Computer Science
Abstract EN
Zimbabwe’s homogeneous precipitation regions are investigated by means of principal component analysis (PCA) with regard to the underlying processes related to ENSO and/or Indian Ocean Dipole zonal mode (IODZM).
Station standardized precipitation index rather than direct rainfall values represent the data matrix used in the PCA.
The results indicate that the country’s rainfall is highly homogeneous and is dominantly described by the first principal mode (PC1).
This leading PC can be used to represent the major rainfall patterns affecting the country, both spatially and temporarily.
The current practice of subdividing the country into the two seasonal rainfall forecast zones becomes irrelevant.
Partial correlation analysis shows that PC1 is linked more to the IODZM than to the traditional ENSO which predominantly demonstrates insignificant association with PC1.
The pure IODZM composite is linked to the most intense rainfall suppression mechanisms, while the pure El Niño composite is linked to rainfall enhancing mechanisms.
American Psychological Association (APA)
Manatsa, Desmond& Mukwada, Geoffrey. 2012. Rainfall Mechanisms for the Dominant Rainfall Mode over Zimbabwe Relative to ENSO andor IODZM. The Scientific World Journal،Vol. 2012, no. 2012, pp.1-15.
https://search.emarefa.net/detail/BIM-508669
Modern Language Association (MLA)
Manatsa, Desmond& Mukwada, Geoffrey. Rainfall Mechanisms for the Dominant Rainfall Mode over Zimbabwe Relative to ENSO andor IODZM. The Scientific World Journal No. 2012 (2012), pp.1-15.
https://search.emarefa.net/detail/BIM-508669
American Medical Association (AMA)
Manatsa, Desmond& Mukwada, Geoffrey. Rainfall Mechanisms for the Dominant Rainfall Mode over Zimbabwe Relative to ENSO andor IODZM. The Scientific World Journal. 2012. Vol. 2012, no. 2012, pp.1-15.
https://search.emarefa.net/detail/BIM-508669
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-508669