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Politics : Formerly About Advanced Micro Devices
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To: i-node who wrote (838081)2/21/2015 1:56:14 PM
From: Wharf Rat  Read Replies (1) of 1579897
 
"how one concludes it is the hottest in 100,000 years?"

One looks at the 100K year records, such as



Figure 1. Average Yearly Temperatures in Greenland over the past 100,000 Years as inferred from Oxygen isotope analysis of the GISP2 Greenland ice core. Source: Cuffey, K.M., and G.D. Clow, "Temperature, accumulation, and ice sheet elevation in central Greenland throughout the last deglacial transition", Journal of Geophysical Research, 102, 383-396, 1997.
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