One of the most easily imagined impacts of global warming is an increase in the number and severity of heat waves. Heat stress is a well-known danger during prolonged bouts of hot weather, especially in cities, which tend to trap heat. Rising sea levels, another expected consequence of global warming, could adversely affect the health and well-being of coastal inhabitants. (World Resource Institute)
Model simulation and palaeoclimatic evidence suggest that when climate warms, it warms more in higher latitudes than in lower latitudes and more in winter than in summer (Golitsvn, 1989; Schneider, 1989). A warmer atmosphere contains more water vapour and increases the intensity of the whole hydrological cycle, but precipitation patterns are likely to change homogeneously in time and space (Golitsyn, 1989). Some scientists believe that in a warmer climate the earth can be expected to experience more variable weather than now, with a likelihood of more floods and drought, more intense hurricanes or typhoons, and more heatwaves (Golitsyn, 1989; Hansen et al., 1989).