Do you regard the chart in post 15 on this thread as a reasonably accurate representation of temperature and CO2 levels?
Over geological history, yes. But it doesn't resolve the Holocene or the Pleistocene glacial/interglacial period at all.
Where do you see us at this moment on the chart in terms of temperature and CO2?
Beyond the end of it.
How do you know we are in 'a very stable interglacial period?'
Because I do. And the plots below illustrate why. The first plot shows temperatures (blue) and CO2 concentrations (red) from Antarctic ice cores from 420,000 years ago to present. The second plot is a close-up of the last 18,000 years only (same data as the first plot). You can see in the first plot how "jumpy" temperatures were in previous interglacials (the warm periods) -- and the glacial periods weren't much more stable. The second plot shows clearly how stable the past 11,000 years have been, and this is the period since the most recent retreat of the continental glaciers. In truth, this is an abnormally stable interglacial period.
