• Drought monitoring in Kenya: A case of Tana River County 

  Ngaina, Joshua N.; Mutua, F. M.; Muthama, N. J.; Kirui, J. W.; Sabiiti, G.; Mukhala, E.; Maingi, N. W.; Mutai, B. K. (2014-07)

  Standardized Precipitation Index (SPI) is used to assess past, present and projected drought conditions while Mann Kendall trend test and coefficient of variability is used for trend analysis. Observed data from National ...
• Assessment of the potential of enhancing rainfall through weather modification in Kenya 

  Ngaina, Joshua N.

  The study assessed the potential of enhancing rainfall through weather modification. The specific objectives were aimed at determining the seasonal wind pattern; investigation of the temporal and spatial variation of ...
• Modelling aerosol cloud precipitation interactions for weather modification in East Africa 

  Ngaina, Joshua N.

  Precipitation enhancement is one of the possible measures to improve on the available fresh water in East Africa (EA). The existing gap in knowledge not only on suitable conditions but also Aerosol-Cloud-Precipitation (ACP) ...
• Options for improving the communication of seasonal rainfall forecasts to smallholder farmers – the case of Kenya 

  Shah, Parita; Opiyo, Romanus; Ngaina, Joshua N.; Speranza, Chinwe I. (2012)

  This „Briefing Paper“ discusses options for improving the communication of seasonal rainfall forecasts to smallholder farmers, taking Kenya as its example. Smallholder farmers depend on rain-fed ...
• Towards precipitation enhancement through cloud seeding in Kenya 

  Ngaina, Joshua N.; Muthama, Nzioka; Ininda, Joseph; Opere, Alfred; Mutai, Bethwel (2014)

  The study investigated potential of enhan-cing precipitation through cloud seeding duringOctober-November-December (OND) season.Rainfall, cloud top temperature (CTT), aerosoloptical depth (AOD) and wind data were ...

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