“But Historical Times”


Yet mankind muddled through the last Ice Age’s death throes and has done rather well since, despite a 100-meter rise in sea levels!


Objections and Replies

Before. We already had similar temperatures in previous times—
☞ At present rates of human emissions, there will be more CO2 in Earth’s atmosphere by 2025 than at any time in at least the last 3.3 million years.

Dust Bowl. Explain how we could have prevented the Dust Bowl—
☞ Better soil conservation and land management practices might have helped. AGW makes these extreme events more likely. June 2021 was the

Eemian. —


LIA. The Little Ice Age
☞ We have evidence that the Great Dying contributed to the Little Ice Age.

MBH. Mike’s magnum opus has been discredited by the Auditor
☞ That paper has been published in 1998, and contrarians are responsible for its Streisand effect. Besides, seldom is the question asked: is the Auditor audited? Rarely.

MWP. They tried to erase the Medieval Warming Period
☞ The MWP was before 1400, and MBH’s series go 1400 onward. However, note that the bigger the temperature swings in historical times, the bigger should be climate sensitivity.

Prosperity. Warmer periods are generally a time of prosperity
☞ Had we been around during the Neoproterozoic, humans might have needed robust air conditioning.

Romans. Romans grew wine in the North of England
☞ The Nene Valley is not the North, and a Scot made wine recently. England has more than 450 wineries and produces around 3.15m bottles a year, where there was a bumper harvest in 2018. Oh, and there’s a vineyard in Norway! Also, there’s wine and then there’s wine.

Thermopylae. The battle was on a 100 m strip that is now 1 km, so sea levels
☞ Incorrect: the depositional process of the Sperchios River has filled a considerable part of the basin with alluvial sediments.


Details on all the historical times can’t be covered here. We provide a blueprint for the kind of exchanges to expect. Do your homework!


GSA Geologic Time Scale.

2015-11; Why validation in Principle Components Analysis?


2020-07; Atmospheric CO2 during the Mid-Piacenzian Warm Period and the M2 glaciation; https://doi.org/10.1038/s41598-020-67154-8

2020-06; Holocene global mean surface temperature, a multi-method reconstruction approach; https://doi.org/10.1038/s41597-020-0530-7

2019-03; Earth system impacts of the European arrival and Great Dying in the Americas after 1492. DOI: 10.1016/j.quascirev.2018.12.004

2010-01; Palaeogeographical reconstruction of the battle terrain in Ancient Thermopylae, Greece; https://doi.org/10.3166/ga.23.241-253

2009-03; Amplification of the North American “Dust Bowl” drought through human-induced land degradation; DOI: 10.1073/pnas.0810200106

Climateball Episodes

2008-05; The Deming Affair; The source of the “get rid of MWP” meme.

2012-02; Review of the Hockey Stick Illusion – Part 1.