Further confirmation that carbon dioxide lags temperature by hundreds of years

I find the blithe assumption – based on supposition and without any evidence – that carbon dioxide has any significant impact on climate, perhaps the most irritating part of the politically correct global warming dogma. I have no objection to it being a hypothesis but it is not rational to take such an hypothesis as fact just  “because there is no other explanation”. In fact, solar effects provide most of the “missing” explanation but since solar effects cannot be put down to man and clearly this is politically incorrect!!

Historical data of ice ages shows that carbon dioxide changes lag temperature changes and previously it seemed that the lag might be as long as 700 – 1000 years. Researchers from the University of Copenhagen have published a new paper. The paper suggests that the lag was more likely a few hundred years and less than 400 years. But lag it was. I draw two main conclusions:

  1. That carbon dioxide variations in the past were primarily caused by temperature changes and not the other way around, and
  2. That the degassing of the oceans following a temperature rise caused an increase in carbon dioxide  in just a few hundred years.

Of course this does not prove that increasing carbon dioxide emissions cannot influence temperature. But what it does show is that the primary link between temperature and CO2  is that temperature leads CO2 concentration.

Given that

  1. there have been no “temperature runaways” in the past where the subsequent increase of  CO2 concentration has provided a positive feedback to the initial temperature rise and
  2. given that in any system which tends to an equilibrium the effect tends to neutralise the cause,

I find it more plausible that increasing CO2 concentration may well have contributed to neutralising the temperature increase which caused the CO2 emission in the first place.

The greatest climate change the world has seen in the last 100,000 years was the transition from the ice age to the warm interglacial period. New research from the Niels Bohr Institute at the University of Copenhagen indicates that, contrary to previous opinion, the rise in temperature and the rise in the atmospheric COfollow each other closely in terms of time. The results have been published in the scientific journal, Climate of the Past. …

It had previously been thought that as the temperature began to rise at the end of the ice age approximately 19,000 years ago, an increase in the amount of CO2 in the atmosphere followed with a delay of up to 1,000 years.

“Our analyses of ice cores from the ice sheet in Antarctica shows that the concentration of CO2 in the atmosphere follows the rise in Antarctic temperatures very closely and is staggered by a few hundred years at most,” explains Sune Olander Rasmussen, Associate Professor and centre coordinator at the Centre for Ice and Climate at the Niels Bohr Institute at the University of Copenhagen.

Tightened constraints on the time-lag between Antarctic temperature and CO2during the last deglaciation by J. B. Pedro, S. O. Rasmussen, and T. D. van Ommen Clim. Past, 8, 1213-1221, 2012

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