dc.contributor.author | Gar-Glahn, Arthur | |
dc.date.accessioned | 2013-05-09T07:24:46Z | |
dc.date.available | 2013-05-09T07:24:46Z | |
dc.date.issued | 2005 | |
dc.identifier.citation | Master of science in meteorology, | en |
dc.identifier.uri | http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/20561 | |
dc.description.abstract | This study examined the atmospheric circulation pattern associated with extreme rainfall
events over West Africa during rainfall season. The atmospheric circulation patterns are
crucial in determination of the mechanisms that lead to extreme events in seasonal
rainfall. The study specifically, examined the spatial and temporal patterns of rainfall
over West Africa; identified the extreme wet and dry years; identified the flow pattern
associated with the wet and dry years; and examined the relationship between rainfall and
circulation parameters.
The two data sets used in this study were rainfall and wind data. The rainfall data set is
the global monthly precipitation data set from the Climate Research Unit at the
University of East Anglia; while the wind data set is the reanalysis monthly wind data
from the National Center for Environmental Prediction (NCEP) and the National Center
for Atmospheric Research (NCAR). The methods of analysis used in this study included,
plotting the spatial mean pattern of rainfall; time series analysis of the rainfall over the
region of study which included determination of wet and dry years, trend analysis,
spectral analysis and correlation analysis of rainfall and wind derived parameters (wind
shear and velocity potential over the Indonesia Region); and plotting of winds and the
derivatives (diverge~~ and-vorticity) of both regional and global during wet and dry
years. | en |
dc.description.sponsorship | University of Nairobi | en |
dc.language.iso | en | en |
dc.title | Atmospheric circulations associated with extreme events in seasonal rainfall over west Africa | en |
dc.type | Thesis | en |
local.publisher | Department of meteorology School of physical sciences University of Nairobi | en |