What is the main cause for global warming?

Global warming has begun since the industrial revolution and it is getting worse recently. Even though the increase of greenhouse gases such as CO2 is thought to be the main cause for global warming, its impact on global climate has not been revealed clearly in rather quantitative manners. However, researches using General Circulation Models(GCMs) have shown the accumulation of greenhouse gases increasing the global mean temperature, which in turn impacts on the global water circulation pattern. This changes in global water circulation pattern result in abnormal and more frequent meteorological events such as severe floods and droughts, generally more severe than the normal ones, which are now common around the world and is referred as an indirect proof of global warming. Korean peninsula also cannot be an exception and have had several extremes recently. The objective of this research is to predict the hydrological environment changes in the Korea peninsular due to the global ...  more