A5004939032- Climate variability and models
- Meteorological Phenomena and Simulations
- Precipitation Measurement and Analysis
- Hydrology and Drought Analysis
- Climate Change and Environmental Impact
- Tropical and Extratropical Cyclones Research
- Agriculture and Rural Development Research
- Computational Physics and Python Applications
- Climate change impacts on agriculture
- Noise Effects and Management
- Economic Theory and Policy
- Urban Green Space and Health
- Plant responses to elevated CO2
- Urban Heat Island Mitigation
- Ocean Waves and Remote Sensing
- Agricultural Economics and Policy
- Flood Risk Assessment and Management
- African studies and sociopolitical issues
- Global Peace and Security Dynamics
- Hydrology and Watershed Management Studies
- Science and Climate Studies
- Urban and Rural Development Challenges
- Crop Yield and Soil Fertility
- ICT in Developing Communities
- Integrated Water Resources Management
University of Nairobi
2009-2024
National Institute of Meteorology
2015
Université de Bourgogne
2008-2012
Centre National de la Recherche Scientifique
2009-2012
IGAD Climate Prediction and Applications Center
2012
Abstract Weather and climate extremes such as droughts floods have far reaching impacts in Kenya. They had implications a variety of sectors including agriculture, water resources, health, energy, disaster management among others. Lake Victoria its catchment support millions people any impact on ability to the livelihoods communities this region is major concern. Thus, main objective study was assess potential future climatic changes Nzoia basin, how they might affect streamflow. The Soil...
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ABSTRACT Mean diurnal rainfall regimes over Eastern Africa (also referred to as the Greater Horn of Africa) are studied based on 3‐hourly data from TRMM 3B42 set, averaged a 17‐year period (1998–2014). The consistency with long‐term mean raingauge data, available for partly independent periods, varies good (Sudan, Ethiopia, Eritrea and Somalia) very (Kenya, Tanzania Uganda). Over sea (Indian Ocean Red Sea), distribution is quite uniform; however, morning peak dominates there evidence...
ABSTRACT The aim of this study was to derive components the intraseasonal rainfall variations from daily in Equatorial Eastern Africa region and assess their spatial coherence, a pointer potential predictability. Daily observations 36 stations distributed over extending 1962 2000 were used. March May October December periods commonly referred as long short seasons respectively considered. Seasonal statistics at local (station) level first defined. also grouped into near‐homogeneous...
Despite earlier studies over various parts of the world including equatorial Eastern Africa (EEA) showing that intraseasonal statistics wet and dry spells have spatially coherent signals thus greater predictability potential, no attempts been made to identify predictors for these statistics. This study therefore (with a 1-month lead time) some subregional (SRISS) which showed greatest potential during short rainfall season EEA. Correlation analysis between SRISS seasonal totals on one hand...
Developing countries are becoming more urbanized leading to modification on climate over the cities. Proper urban atmospheric planning and management thus fundamental for cities’ sustainability. Urban weather therefore needs continuous monitoring offer accurate, reliable timely update of any significant changes. This study examined long term temperature by urbanization utilizing decadal population data, monthly maximum minimum land surface albedo forty years. The data were subjected...
ABSTRACT Many African countries whose economies are largely based on weather/climate sensitive sectors vulnerable to long‐term changes in weather and climate. This study is aimed at assessing whether the recent decades have observed any significant trend intraseasonal descriptors (ISDs) of wet dry spells local sub‐regional levels seasonal monthly timescales over equatorial eastern Africa (EEA). Daily rainfall observations 36 stations spanning a period 51 years (1962–2012) were used. The has...
This study investigates the contributions of Atlantic Ocean to June-August rainfall over Uganda and western Kenya (KU). The has utilized datasets including precipitation from Global Precipitation Climatology Centre, North Oscillation Index (NAOI), South Dipole (SAODI), ERA-interim reanalysis, Sea Surface Temperature (SST). Singular value decomposition (SVD), composite analysis correlation are used achieve objective study. Results show that recent extreme events June - August (JJA) season...
CR Climate Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 59:39-60 (2014) - DOI: https://doi.org/10.3354/cr01198 Spatial interpolation of daily rainfall stochastic generation parameters over East Africa Pierre Camberlin1,*, Wilson Gitau2, Pascal Oettli3, Laban Ogallo4, Benjamin Bois1 1Centre de Recherches Climatologie (CRC), Biogéosciences, UMR 6282 CNRS/Université Bourgogne, 6 Bd...
Survey on the Utilization of Weather Information and Products for Selected Districts in Kenya
Abstract The modulation of the rainfall diurnal cycle at intraseasonal and interannual time scales is examined using gridded data over Eastern Africa nearby Indian Ocean for period 1998–2014. Our focus on October‐December season which strongly impacted by both Madden‐Julian Oscillation (MJO) Dipole Mode (IODM). effect MJO, not synchronized across whole region, mainly through changes in amplitude cycle, especially an enhancement late afternoon peak active phases MJO. phase only shows minor...
Abstract In recent years, Eastern Africa has been severely impacted by extreme climate events such as droughts and flooding. a region where people's livelihoods are heavily dependent on conditions, hydrometeorological can exacerbate existing vulnerabilities. For example, suppressed rainfall during the March to May 2019 rainy season led substantial food insecurity. order enhance preparedness against forecasted events, it is critical assess predictions their known drivers in forecast models....
Abstract Testbeds have become integral to advancing the transfer of knowledge and capabilities from research operational weather forecasting in many parts world. The first high-impact testbed tropical Africa was recently carried out through African Science for Weather Information Forecasting Techniques (SWIFT) program, with participation researchers forecasters Senegal, Ghana, Nigeria, Kenya, United Kingdom, international pan-African organizations. aims were trial new nowcasting products...
The APSIM (Agricultural Production Systems sIMulator) model was used to assess the impact of climate change on sorghum production in semi arid low lands Machakos County under three future scenarios (2010-2039, 2040-2069 and 2070-2099) using two Representative Concentration Pathways (RCPs): RCP 4.5 8.5. calibrated evaluated field experimental data obtained from a two-year experiment (2014 2015) parameters carried out at Kenya Agricultural Livestock Research Organization (KALRO) Katumani....
This paper presents an analysis of spatial and temporal variation rainfall thunderstorm occurrence over Kenya from January 1987 to December 2017. The meteorological data used were obtained the Meteorological Department (KMD) for same period. included monthly occurrences amounts 26 synoptic stations across country. characteristics monthly, seasonal annual frequency results presented on maps while Time series graphs display pattern cycle, variations inter-annual variability occurrences. A...
It is becoming increasingly important to be able verify the skill of precipitation forecasts, especially with advent high-resolution numerical weather prediction models. This study focused on assessing climate forecast system (CFS) model in predicting rainfall seasonal time scales over East Africa region for period January 1981 December 2009. The seasons considered were March May (MAM) and October (OND). data used included observed totals from 2009 CFS same period. had 15 Runs. measure...
Survey on the Utilization of Weather Information and Products for Selected Districts in Kenya
Survey on the Utilization of Weather Information and Products for Selected Districts in Kenya