The Vostok Ice Core and the 14,000 Year CO2 Time Lag

via The Global Warming Policy Forum (GWPF)
http://www.thegwpf.com

A detailed analysis of temperature, CO2 and methane variations from the Vostok ice core is presented for the time interval 137,383 to 102,052 years ago.

This captures the termination of the glaciation that preceded the Eemian interglacial and the inception of the last great glaciation that succeeded the Eemian. At the termination, CO2 follows dT exactly, but at the inception CO2 does not follow temperature down for 14,218 years. Full glacial conditions came into being without falling CO2 providing any of the climate forcing. This falsifies the traditional narrative that dCO2 amplified weak orbital forcing effects. It is quite clear from the data that CO2 follows temperature with highly variable time lags depending upon whether the climate is warming or cooling.

Methane on the other hand lags temperature by about 2,000 years at the termination but follows temperature down exactly at the inception. It therefore follows that methane and CO2 are not coupled. Each responds in their own time to changing climate. The absence of coupling may be explained by the different bio-geochemical pathways these gasses have in the biosphere – ocean – atmosphere system.