ABSTRACT
Changes have been observed in the components of Earth system: altering global mean surface temperature and precipitation patterns, increase in ocean temperatures and acidity, sea level rise, decline in the Arctic sea ice cover, melting of the Greenland and Antarctic ice sheets, shrinking of glaciers worldwide, changes in the global water cycle, and changes in the incidence, strength and duration of extreme weather events, shifts in ecosystem features and so on. Changes in atmospheric circulation are vital for local climate change because they could lead to larger or smaller changes in climate in a particular region than elsewhere. Almost all the major assessed components of the climate system subjected to human influence. This collective evidence, thus, establishes that human influence virtually caused the warming of the Earth. And there is strong evidence against the view that solar forcing, volcanoes and internal variability were the strong drivers of warming since 1950.
