Effects of Global Warming

Many researches found out that global warming effects have taken place during the 20th century. Global warming effects have resulted in an increase of the average surface temperature, a decrease in snow cover and ice extent and a rise of the sea level. Moreover, global warming effects affect precipitation, cloud cover and extreme temperatures. Natural reasons will always affect global warming effects. However, human activities are increasing significantly the concentrations of greenhouse gases, mainly CO2) in the atmosphere, resulting in global warming effects. Although more research is needed, understanding of global warming effects processes and computer models have improved. Global warming effects models conclude that most of the warming over the last 50 years is likely to have been due to man-made activities.