The shorter-term variations are more likely due to natural causes, and do not contradict our fundamental understanding that the long-term warming trend is primarily due to human-induced changes in the increased atmospheric levels of CO2 and other greenhouse gases. Emerging economy nations are actively seeking to identify the opportunities and related financial, technical, and policy requirements to move toward a low carbon growth path. Extreme Climate changes such as aridity, drought, flood, cyclone and stormy rainfall are expected to leave an impact on human society. They are expected to generate widespread response to adapt and mitigate the sufferings associated with these extreme Climate changes. A typical response to local aridity is the human migration to safer and productive areas.