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Author Bob Alex Ogwang |
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Rainfall characteristics over Togo and their related atomospheric circulation anomalies: In Journal of Environmental & Agricultural Sciences, 5:34-48
This study attempts to reveal features of rainfall over Togo, in relationship to the
prevailing atmospheric circulation. The study employed correlation analysis and composite analysis in
the analysis of rainfall, sea surface temperature, wind, and humidity. Empirical orthogonal functions
(EOF) analysis was employed in this study. The years: 1989, 1991, 1995, 2003 and 2007 were
identified to be anomalously wet years while 1982, 1983, 1990, 1992, 2001 and 2006 fall in the
anomalously dry years’ category. The dominant mode of variability exhibits a dipole patter ...
Rainfall characteristics over Togo and their related atomospheric circulation anomalies: In Journal of Environmental & Agricultural Sciences, 5:34-48
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Kpaikpai Batebana ; Bob Alex Ogwang ; Zin Mie Mie Sein ; Faustin Katchele Ogou ; Victor Ongoma ; Jean Paul Ngarukiyimana
Published by: Batebana et al. ; 2015This study attempts to reveal features of rainfall over Togo, in relationship to the
prevailing atmospheric circulation. The study employed correlation analysis and composite analysis in
the analysis of rainfall, sea surface temperature, wind, and humidity. Empirical orthogonal functions
(EOF) analysis was employed in this study. The years: 1989, 1991, 1995, 2003 and 2007 were
identified to be anomalously wet years while 1982, 1983, 1990, 1992, 2001 and 2006 fall in the
anomalously dry years’ category. The dominant mode of variability exhibits a dipole pattern, and
explains 36% of the total variance. The rainfall was robustly correlated to Southern Atlantic Ocean
Dipole (SAOD). The predominant wind flow over the country is westerly. Wet years were associated
with anomalous low pressure area over Togo as opposed to the dry years which exhibited an anomalous
high pressure area in the same region at low level. The results from this study provided basic climate
information on Togo’s rainfall. The SAOD can be further investigated of how it can be factored into
seasonal rainfall forecasting over Togo. Accurate and timely rainfall forecasting will help to minimize
the devastating impacts associated with anomalous rainfall in the region.Notes: If you wish to download the full text, please contact library(at)wmo.int (Please replace (at) by @).
Language(s): English
Format: Digital (Available online for logged-in users)Tags: Atmospheric circulation ; Precipitation ; Togo ; Thesis - WMO Fellowship Division
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Diagnosis of September-November Droughts/Floods over Uganda and the associated circulation anomalies
Uganda has experienced a number of extreme weather and climate events in the form of floods and droughts. In a number of cases, flood events associated with heavy rainfall have been followed immediately by droughts that tend to persist for several seasons. These events have always had devastating impacts on various sectors of the country's economy. The impacts include destruction of infrastructure, loss of life and property and many other far reaching socio-economic impacts. The impact of these extreme events can be greatly reduced through good understanding of previous climatic events and the ...
Diagnosis of September-November Droughts/Floods over Uganda and the associated circulation anomalies
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Published by: Nanjing University of Information Science and Technology ; 2011
Uganda has experienced a number of extreme weather and climate events in the form of floods and droughts. In a number of cases, flood events associated with heavy rainfall have been followed immediately by droughts that tend to persist for several seasons. These events have always had devastating impacts on various sectors of the country's economy. The impacts include destruction of infrastructure, loss of life and property and many other far reaching socio-economic impacts. The impact of these extreme events can be greatly reduced through good understanding of previous climatic events and their associated impacts and ability to project future events in good time so that necessary precautions can be put in place. The objective of this study was to investigate the flood/drought events of September-November (SON) season over Uganda and the associated circulation anomalies.
Notes: If you wish to download the full text, please contact library(at)wmo.int (Please replace (at) by @).
Language(s): English
Format: Digital (Available online for logged-in users) (ill., charts, maps)Tags: Natural hazards ; Drought ; Flood ; Uganda ; Thesis - WMO Fellowship Division
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