Over the course of
a full glacial cycling, CO2 typically only goes through a similar change, 1/2 a doubling.
We recently extended this record to approximately 120,000 years BP in order to track vegetation change over
a full glacial cycle at millennial to orbital timescales.
I'd remind you that while humans have survived more than
a full glacial cycle, we didn't yet exist as a species when temperatures last hit 3 C above our pre-Industrial levels, back in the Pliocene.
Not exact matches
Although the primary driver of
glacial — interglacial
cycles lies in the seasonal and latitudinal distribution of incoming solar energy driven by changes in the geometry of the Earth's orbit around the Sun («orbital forcing»), reconstructions and simulations together show that the
full magnitude of
glacial — interglacial temperature and ice volume changes can not be explained without accounting for changes in atmospheric CO2 content and the associated climate feedbacks.