Climate Change Global, Regional, and National Dimensions

摘要

Solar activities have had notable effect on paleoclimatic changes. Contemporary solar activities are weak and hence expected to cause global cooling. Prevalent global warming, caused by buildup of greenhouse gases in the troposphere, seems to exceed this solar effect. This paper discusses this issue. The River Nile is the principal source of water to Egypt. Hence the climates of the Nile Basin are of special importance. Egypt and the nine other countries that share the Basin need to develop a regional circulation model that would enable them to forecast future climate changes. Recent changes in climate parameters over Egypt and its impacts have been assessed, and efforts towards mitigation and adaptation to climate change were reported in the national communication to the United Nations Climate Change Conference (COP) in 2009.