Tipping Point Reached?

In a NASA article concerning the reduction of sea ice in the Arctic, Stephanie Renfrow quotes Scientist Ron Lindsay, of the University of Washington Applied Physics Laboratory: “Our hypothesis is that we’ve reached the tipping point.” In climate science, reaching a tipping point means that a stable climate system has changed direction. A tipping point can happen when a positive feedback takes hold, meaning that a small change in one direction leads to yet further change in the same direction, the positive feedback is that increased summer melt means decreased winter growth and then even more melting the next summer, and so on.”

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One Response to Tipping Point Reached?

  1. matt says:

    Maybe Greenpeace’s Ark could save the polar bear as its habitat melts away beneath its feet.

    I think not.

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