Date of Award

1-1-2015

Language

English

Document Type

Master's Thesis

Degree Name

Master of Science (MS)

College/School/Department

Department of Atmospheric and Environmental Sciences

Content Description

1 online resource (xiv, 92 pages) : color illustrations, color maps.

Dissertation/Thesis Chair

Paul E Roundy

Committee Members

Mathias Vuille

Keywords

Precipitation variability, Ocean temperature, Ocean-atmosphere interaction, Thermoclines (Oceanography), Ocean currents, Dipole moments

Subject Categories

Atmospheric Sciences

Abstract

Tropical East Africa is influenced by two main rainy seasons, during autumn and spring. During autumn, tropical East African precipitation is clearly influenced by Indian Ocean Dipole (IOD) and/or ENSO. During spring, there is no clear SST pattern in the Indian Ocean. The association between El Niño and positive IOD phases is much stronger than the association between La Niña and negative IOD during October and November. During October, the association between El Niño and wet condition over tropical eastern Africa is stronger than association between La Niña and dry conditions. During November, the association between positive IOD and eastern African precipitation is stronger than the association between La Niña and dry conditions.

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