Ice Ages, ‘Unsolving’ the mystery

Refuting the ice volume proxy by system dynamics.   Abstract Oxygen isotope (δ18O) data collected from ocean sediment cores (benthic stacks) are thought to be a proxy for global ice volume during the Pleistocene ice ages. However, the ‘system dynamics’ of accumulating ice sheets causes a phase shift compared to the original forcing signal, which [...]

By |2019-03-08T22:24:33+02:002 Mar 2019|10 Comments

Ice age revisited, integrated insolation and the MIS-3 Mystery

Falsifying the supposed role of CO2 in the ice age cycles Category: Paleoclimatology Abstract In previous posts we have examined the climate/temperature mismatch between actual field exploration and the ice cores, during relatively short periods after the Last Glacial Maximum (LGM). We have concluded that the isotope paleo thermometer from the ice cores is not a direct [...]

By |2019-02-28T12:08:01+02:0014 Feb 2019|2 Comments

Revisiting the ice core isotope thermometer

André Bijkerk Isotopes in precipitation are essentially not a proxy for temperature but for humidity. Category: Paleoclimatology and Atmosphere This is the fourth post in series with the objective of revisiting the Pleistocene ice ages, demonstrating that several well-accepted scientific practices don't hold up very well in the big picture. In the previous [...]

By |2019-01-19T23:23:55+02:0016 Jan 2019|5 Comments

The Younger Dryas and the isotope paleothermometer

Researching discrepancies of the Arctic isotope paleothermometer versus other climate reconstructions during the Younger Dryas. Category: Paleoclimate This is the second post in series with the objective of revisiting the Pleistocene ice ages, demonstrating that several well-accepted scientific practices don't hold up very well in the big picture. We will examine possible flaws in current [...]

By |2019-01-12T10:40:49+02:0011 Jan 2019|Comments Off on The Younger Dryas and the isotope paleothermometer

The African Humid Period

André Bijkerk As we in the north of the globe wonder about climate changes in the past, we think about ice ages, the equatorials however wonder about climate change as in monsoons changes. For instance if we zoom in on the Sahara in Google Earth we see remains of lush rainforests and numerous [...]

By |2019-02-01T20:50:38+02:006 Jan 2019|2 Comments

The mystery interval

Category: Paleoclimatology Sub category: the isotope thermometer of the ice cores. André Bijkerk Abstract The Anthropogenic climate change hypothesis has its roots in the climate reconstructions based on the ice core records of Antarctica and Greenland. Isotope ratios of oxygen and hydrogen in the ice are assumed to be proxies for global temperature. [...]

By |2018-12-18T12:10:58+02:0018 Dec 2018|13 Comments
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