Two clear, powerful examples of a positive climate feedback loops are happening now in the Arctic. The first is happening on land, where permafrost that holds large amounts of both methane and carbon is thawing because of the climate crisis. The second on the ice and open ocean. Methane is a very, very powerful greenhouse gas.What is the Arctic amplification?
This arctic amplification, as it is known in the Northern Hemisphere, is linked to the melting of the Greenland Ice Sheet, which has accelerated over the last couple of decades with no slowdown in sight. The really bad thing is that Greenland still has a lot of ice left—at least for the time being. Melting sea ice cannot raise sea levels.What is the difference between positive and negative feedback loops?
Positive feedback loops are activities that increase the effects of the interacting parts of the system, while negative feedback loops are activities that decrease the effects of the interacting parts of the system to help maintain equilibrium. Albedo varies by location and season. This video shows these changes.What is the ice-albedo feedback?
As the atmosphere warms and sea ice melts, the darker ocean absorbs more heat, causes more ice to melt, and makes the Earth warmer overall. The ice-albedo feedback is a very strong positive feedback.