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Maize yield (ton/acre)0.4 0.8 1.2 1.6Rice yield (ton/acre)0.8 1.0 1.2 1.4 1.6Wheat yield (ton/acre)0.3 0.5 0.7a) Rice yieldb) Wheat yield1990 1995 2000 2005 2010year1990 1995 2000 2005 2010yearc) Maize yield1990 1995 2000 2005 2010yearFigure 3-6 Time series of annual crop yield in tonne/acre for a) rice yield, b) wheat yieldand c) maize from 1990 to 2010. The black line are the fitted linear trend of the yield data andred line are the smoothed local trend.3.3 PRECIS regional climate modelThis section gives an abstract summary of PRECIS (Providing REgional Climates forImpacts Studies) developed by Met Office Hadley Centre for use in climate change impactstudies. More details about the PRECIS RCM can be found in Wilson et al. (2011).PRECIS RCM is developed for targeting developing countries that cannot purchase thesophisticated climate model on their own. This is one of the targets of the United NationsFramework Convention on Climate Change (UNFCCC) objective (Wilson, et al., 2011).PRECIS RCM can be run in a personal computer and produce regional climate changescenarios for study of impacts, by doing so there is a successful transfer of technology andownership which will assist the country in taking timely and effective actions towards the24