ANTH 1010 Lecture Notes - Lecture 8: Permafrost, Anthropocentrism, Megadrought
Document Summary
Climate and environmental scientists are in agreement that the world is experiencing a general warming period of significant nature. According to un panel on climate change, there will be an avg. global t rise of at least 3 degrees centigrade. Climate change is thought to be caused by the anthropocentric generated emission of ghg which has been accelerating since the ir. Unexpected pace and magnitude of global warming startles researchers. This is due to unpredictable factors that weren"t at play 100 years ago, but are now. 20th century was the warmest in the past millennium & the last decade was the warmest decade of the millenium. Frozen tundra contains vast amounts of methane gas. As we increase co2 levels with anthropogenic climate change, tundra thaws and releases methane into the atmosphere. Each molecule of methane is 21x as powerful of a ghg as co2.
