Earth’s Climate Changing Quickly, Violently
“Evidence emerging in the past five years or so suggests the presence of many previously unknown tipping points that could trigger dangerous climate change.” There are indications that the speed and severity of climate change is approaching or exceeding the worst case scenarios as given in ranges of possibilities by scientists. Throughout the years of international climate negotations worst case scientific scenarios of abrupt [search], run-away [search] climate collapse were consistently downplayed and watered down. Old ideas of gradual smooth change are giving way to cataclysmic shifts of state in atmospheric processes and patterns. It was thought that Greenland and Antarctica ice sheet melting [search] would take hundreds if not thousands of years to appreciably rise sea levels, allowing plenty of time for adaptation. Science has now become aware of crevices in the ice sheets which allow melting water to enter oceans in as little as 10 seconds! “These flows completely change our understanding of the dynamics of ice sheet destruction.”
Evidence of sudden violent climate changes historically are also emerging, and from perturbations far less severe than humanity's rapid changing of atmospheric gas composition. Barring last minute universal dramatic personal and government action, we are entering a world of climatic turbulence, where tipping points are constantly crossed. An example is the predicted death of the Amazon causing a massive further carbon release and climate change feedback. Civilization's requirement for regular seasonal patterns, if not met, will threaten our food, water, shelter and social stability.