Faculty of Science & Technology (FST): Recent submissions
Now showing items 3661-3680 of 4213
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The influence of cassia siamea hedgerows on plant water use of cowpeas (vigna unguiculata (l) walp) in the semi arid area of kibwezi in Kenya
(Department of Meteorology University of Nairobi, 2001)The aim of this work was to quantify the impact of a modified agroforestry microclimate on water use of a cowpea crop as compared to a sole stand in the Arid and semi-arid lands (ASALs). Agroforestry systems have been ... -
Characteristics of vertical profile of ozone near the equator
(Meteorology department, university of Nairobi, 1998)Although ozone is rare in several vital roles which the atmosphere, it has depend on vertical distribution of the gas. Consequently, the major objectives of this study were to determine the vertical distribution and ... -
Cumulus parametrization and mid-tropospheric African waves
(Department of Meteorology University of Nairobi, 1985)Infrared (IR) satellite photographs of 1982 (August, September) and 1983 (July, August, September) have been used to study African waves. Prominent wave formations were identified as clbu.d clusters, and their wavelength was ... -
Climate anomalies over Eastern Africa associated with various ENSO evolution phases
(Department of Meteorology, University of Nairobi, 2003)The occurrence of extremes in East African seasonal rainfall cause severe social economic hardships to the communities and governments. Timely long-range rainfall prediction and early warning products can be used to ... -
Numerical simulation of the planetary boundary layer over Kenya using a meso-scale model
(Department of Meteorology University of Nairobi, 1992)A two dimensional dry meso-scale numerical model has been used to simulate the growth of the Planetary Boundary Layer (PBL) over Kenya. The model is primitive equation hydrostatic, uses a terrain following vertical ... -
Numerical simulation of the influence of the sea surface temperature anomalies on the east African seasonal :rainfall
(1994)In this study, the relationship between the Sea Surface Temperature (SST) anomaly patterns and the interannual variability of both the Long Rains (March to May) and the Short Rains (October to December) over East Africa ... -
A comparative verification of precipitation forecasts for selected numerical weather prediction models over Kenya
(Department of Meteorology University of Nairobi, 2006)This study examined the level of skill of daily precipitation forecasts of Numerical Weather Prediction (NWP) models over Kenya. These models are the United Kingdom Meteorological office (UKMO) model, United States' ... -
Human discomfort in Zanzibar due to temperature stress
(Department of Meteorology University of Nairobi, 2009)Weather, climate and health are interconnected in many different ways. All of them are of local as well as of global significance. Weather and climate information is of interest to both health and economic industry. They ... -
A spatial interpolation program for grid analysis and estimating missing meteorological data
(Department of Meteorology University of Nairobi, 2003)This study was geared towards developing a user-friendly spatial interpolation program for grid analysis and estimation of meteorological data. The methods of interpolation used include Lagrangian, Kriging and Inverse ... -
Characteristics of the wet and dry spells during the wet seasons over Kenya
(Department of Meteorology University of Nairobi, 2005)This study aimed at enhancing our understanding of the spatial and temporal characteristics of wet and dry rainfall spells during the main rainfall seasons over Kenya namely the long and short rainfall seasons in order ... -
Use of satellite data in monitoring and prediction of rainfall over Kenya
(Department of Meteorology Faculty of Science University of Nairobi, 2000)Skillful monitoring, prediction and early warning of the extreme weather events is crucial in the planning and management of all rain dependent socio-economic activities. They are also vital for the development of effective ... -
Predictability of weather on extended NWP time scales over Kenya using the NCEP GFS model
(Department of Meteorology University of Nairobi, 2011)Numerical weather prediction (NWP) portends viable applicability as a tool III forecasting the evolution of atmospheric processes and the associated weather on extended time scales. Proper deciphering and interpretation ... -
Prediction of Ethiopian seasonal rainfall using enso indices
(Department of Meteorology University of Nairobi, 2001)Water is important for human life. Most of the water comes from rain. Hence, precise prediction of rainfall is necessary. The objective of this study was to develop a statistical model for forecasting seasonal rainfall ... -
Assessment of the predictability of rainfall over Kenya during the period July to December using the high resolution regional model
(2010)This study assessed the skill of the High Resolution Regional Model (HRM) in forecasting rainfall over Kenya over a period of six months from July 2008 to December 2008. In this study, observed rainfall data and HRM model ... -
Onset and performance of the March- May seasonal rainfall over the equatorial east African region
(Department of Meteorology University of Nairobi, 2007)The onset of the March-May seasonal rainfall season has been observed to be highly variable. There are years of early, normal and late onset. Prior knowledge of whether there is going to be early or late onsets can be ... -
Numerical simulation of the impact of urbanization on the micro climate over Nairobi area
(Department of Meteorology, University of Nairobi,, 2000)The present study investigated the effect of land-use/land-cover changes, including urbanization of the metro area (urban built-up area) and landscape changes (topography), on the microclimate over Cosmopolitan Nairobi ... -
The boundary-layer flow-field regime over Nairobi
(Department of Meteorology, University of Nairobi, 1992)Logarithmic wind profile equations account for the aerodynamics within the lower atmosphere. This paper employs logarithmic equations in various forms while incorporating changes in atmospheric stability to simulate the ... -
OLR and SST characteristics over Africa during years of deficient and surplus rainfall in East Africa
(Department of Meteorology University of Nairobi, 1994)Accurate rainfall forecasts would greatly improve the quality and quantity of agricultural products and other rain dependent activities, while allowing for the amelioration and integration of the catastrophic socio-economic ... -
Characteristics of wet and dry spells in Tanzania during the rainy seasons
(Department of Meteorology University of Nairobi, 2007)Rainfall extremes which cause floods or droughts are known to have capacity to destroy many years of national economic investments on roads, industries, energy, agriculture and other social economic infrastructures. Efforts ... -
Dynamic and thermodynamic transformations in the atmosphere associated with precipitation over West Africa
(Department of Meteorology, University of Nairobi,, 2006)The precipitation associated with atmospheric circulations in summer, over West Africa shows large intraseasonal and interannual variability. The changes in the circulation characteristics were of importance, as they ...
