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Mass Extinction causes Global Climate Change Published by J. S. Pettingill, 15 July 2007 page 2 Examining the cause and effect link between AME and Global Climate Change The Holocene or, the "age of man", is our current geological Epoch. The exact start date is not agreed upon and varies from 10k to 16k years ago. The boundary for the beginning of the Holocene period is marked in the geological record by the mass Extinctions caused by man. The cumulative effects of AME, are dramatically marked in the Vostok ice core samples a few thousand years into the "age of man", by the Antartic Climate Reversal (ACR). Here we see the true starting date of our current Anthropogenic climate over 10,000 years ago.
MIA, the Missing Ice Age Ice Age predictions are always controversial and uncertain, the 'best evidence' is the Vostok Ice core data and the Milankovitch (orbital) cycles, which in my opinion, indicate that the start of our 100,000 year scheduled glacial period is well overdue. Because Anthropogenic mass Extinction reshaped the climate. This caused an interruption in the current glacial cycle, shown on the Vostok Ice Core chart below. The pre-glacial spike reached it's peak temperature of +2.06 approximately 8135 years ago, marked by the red arrow. The Anthropogenic Climate begins as the interruption in the pre-glacial temperature spike occurs at 11,191 years ago. Some may place it earlier, at the first stutter step in the record, occurring 11,749 years ago. These interruptions prevented global temperatures from reaching the critical +3.0 ( possibly as low as +2.13) degree tipping point, and at the same time, knocked the global climate out of sync with Earth's orbital cycles. In all likelihood, the 3.0 tipping point has been destroyed. We are entering unknown territory in our already, 10,000+ year old 'artificial' man-made climate. The last 400K tipping point occurred at 410,483 years ago. Subtracting 400k years, the predicted point would be 10,483 years ago. This coincides closely with the peak point of our current eccentricity period, and is also in alignment with the pre-glacial temperature spike, and associated dust and CO2 levels. If we removed Anthropogenic influences from the temperature record, and extrapolated the slope from prior events, the chart would align more closely with the 10,500 year tipping point. Note: the previous tipping point occurred 128,357 ya (years ago) at a temperature of +3.23 degrees. Anatomically modern humans appear in the fossil record in Africa about 130,000 years ago. Vostok Ice Core data
Link to Vostok Ice Core graph number data The chart below shows the relationship between the milankovitch cycles and glacial periodicity. Currently, the greatest influence is the 400k cycle. The key points of interest are circled in red.
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