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Compare Vostok and DomeC

Notes:

When the most recent 15K years from Vostok and DomeC are plotted together, there are some interesting features to notice. First is that the peaks at 4.5K and 8K in the Vostok data are not present. However, there are many more minimums and maximums in the DomeC data than are not seen in the Vostok data. While the 2 peaks in the Vostok data represented the greatest recent rate of change seen in that data, there are many more faster temperature changes in the DomeC data.

This indicates that the short term changes seen in both data sets is the likely result of aliasing to even faster, shorter term variability. To get an idea of an accurate historic rate of change, consider the interval from 12.5K to 12K years ago, where the temperature increased about 5˚C or about 1˚C per century. This doesn't even include the effect of the more rapid short term changes during this interval and already far exceeds the few of tenths of a degree average increase we've experienced during the last 100 years.