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Politics : Politics of Energy -- Ignore unavailable to you. Want to Upgrade?

To: Bilow who wrote (41526)	7/25/2013 3:30:27 PM
From: Wharf Rat	Respond to of 86355

Antarctic sea ice coverage will increase. Antarctica land ice is decreasing, as its glaciers melt; this is the ice which contributes to sea level rise,and changes in the freezing point. Summer ice is melting at a faster rate in the Antarctic peninsula than at any time in the last 1,000 years, new research has shown. guardian.co.uk not just glaciers melting... Permafrost Melting Faster Than Expected in Antarctica New Research Shows Melting at Rates Comparable to the Arctic stateimpact.npr.org = Temperatures will begin to stabilize 40 years after greenhouse gas levels do... The reason the planet takes several decades to respond to increased CO2 is the thermal inertia of the oceans. Consider a saucepan of water placed on a gas stove. Although the flame has a temperature measured in hundreds of degrees C, the water takes a few minutes to reach boiling point. This simple analogy explains climate lag. The mass of the oceans is around 500 times that of the atmosphere. The time that it takes to warm up is measured in decades. Because of the difficulty in quantifying the rate at which the warm upper layers of the ocean mix with the cooler deeper waters, there is significant variation in estimates of climate lag. A paper by James Hansen and others [iii] estimates the time required for 60% of global warming to take place in response to increased emissions to be in the range of 25 to 50 years. The mid-point of this is 37.5 which I have rounded to 40 years. skepticalscience.com