International climate scientists have identified “tipping points” caused by climate change for nine scenarios. “A tipping point is defined as the point where a small increase in temperature or other change in the climate could trigger a disproportionately larger change in the future.” The nine scenarios include: Arctic sea ice, Greenland ice sheet, West Antarctic ice sheet, Gulf Stream, El Niño, Indian monsoon, West African monsoon, Amazon rainforest and the Boreal forests.