paleoclimate

The IPCC has an extensive discussion [pdf] about so-called paleoclimate and in fact uses the climate record to test current climate models.

Bill Chameides: Non-Climate Scientist 'Climate Scientist' Sets the Record Straight

Even if we are going to have global warming, the paleoclimate record shows that with higher temperatures the growing season is longer, the north African Sahara desert turns into a well watered place of several million square km.

Dennis Wingo - Why Space? Why Now? - NASA Watch

Last week the industrious Steve McIntyre got hold of some paleoclimate data that has been used when trying to reconstruct the earth's temperature history.

Archive 2009-10-01

Hence paleoclimate says more extreme claims about sensitivity must be wrong.

AGU Day 2: The role of CO2 in the earth’s history | Serendipity

Hence paleoclimate says that the more extreme claims about sensitivity (especially those claiming very low levels) must be wrong.

2009 December | Serendipity

Hansen lists climate models third in his sources of understanding of climate change, after (1) paleoclimate and (2) observations of changes in the present and recent past.

2010 January | Serendipity

An obvious thing to do is to try it out on different periods of paleoclimate.

AGU Day 3 part C: How good are predictions from climate models? | Serendipity

We can be very confident that the climate is changing due to anthropogenic carbon emissions (observational studies, paleoclimate analysis and climate models all agree on this).

AGU Day 3 part C: How good are predictions from climate models? | Serendipity

People make extravagant claims -- "As certain as gravity," says Al Gore -- about a branch of science, paleoclimatology, that is only 25 years old (the first textbook on paleoclimate came out in 1980).

I Trust My Statistical Intuition, Arnold Kling | EconLog | Library of Economics and Liberty

It's clear from the paleoclimate record that the scale of the human perturbation of the carbon cycle is significant.

Hansen: Obama has only four years to save the world - NASA Watch