Message from discussion Global warming preceded by increasing carbon dioxide concentrations during the last deglaciation : Nature : Nature Publishing Group
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Subject: Re: Global warming preceded by increasing carbon dioxide concentrations
during the last deglaciation : Nature : Nature Publishing Group
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On 4/6/12 5:25 PM, Bruce Richmond wrote:
> Pretty much. It varies, but it is the consensus view that in the past
> CO2 lagged temperature by about 800 years.
Read the new evidence and weep, Bruce.
> Greenhouse gases drove the close of the last ice age
> To understand what was happening with the climate at the time, the authors gathered data from 80 different climate proxies, widely distributed around the globe. All of them covered 14,000 years that included the exit from the last ice age; they included things like the ice cores, microfossils in ocean sediments, and pollen from lake sediments. These were then used to reconstruct both the local conditions, such as temperature and ocean current strength, as well as the mean temperature for each hemisphere and the planet as a whole.