Linkages between the Indian Ocean Dipole and East African Seasonal Rainfall Anomalies
Date
2008Author
Owiti, Zablone
Ogallo, Laban .A.
Mutemi, Joseph
Language
enMetadata
Show full item recordAbstract
This study was designed to understand the nature of the relationship
between the Indian Ocean Dipole (IOD) index and seasonal rainfall
in East Africa using statistical approaches. The statistical methods used
in this study include correlation, regression and composite analyses.
Results from the analyses suggested that the pattern in Sea Surface
Temperature (SST) anomalies manifested during the IOD events
have strong signals on the regional climate system during the October to
December rainfall season. The study has demonstrated that some of the
extreme rainfall conditions over East Africa were associated with positive
and negative IOD phases. The linkages were strong during El Niño/La
Niña years.
Such information will help to improve monitoring, prediction and
early warning of extreme rainfall events over east Africa to reduce the
vulnerability of the society of the region to negative impacts of extreme
rainfall events that are common in the region.
Citation
J.Kenya Meteorol. Soc., 2(1) 3 –17 (2008)Publisher
University of Nairobi, Department of Meteorology Geology