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Feb 24, 2021 · Scientist William Ruddiman is the lead proponent of the Early Anthropocene Hypothesis, which asserts pre-industrial land clearing and agricultural practices caused the release of historically underappreciated amounts of greenhouse gases, transforming the Earth.
William F. Ruddiman is a palaeoclimatologist and Professor Emeritus at the University of Virginia. Ruddiman earned an undergraduate degree in geology in 1964 at Williams College, and a Ph.D. in marine geology from Columbia University in 1969.
humans did contribute to the climate changes of the seventeenth cen-tury, alongside such natural phenomena as the El Niño episodes, vol-canic eruptions, and the lack of sunspots that Parker emphasizes. I base this statement on the work of William Ruddiman. William Ruddiman is a climatologist, now a professor emeritus at the University of Vir ...
Sep 27, 2015 · Trained as a marine geologist, University of Virginia emeritus professor William Ruddiman for the past fifteen years has worked on a hypothesis that posits that pre-industrial age humans raised greenhouse gas levels in the atmosphere.
Jul 15, 2020 · The early anthropogenic hypothesis (EAH) of Ruddiman (2003) claimed that the anomalous rise in atmospheric CO 2 that began near 7000 years ago was caused by deforestation and contrasted with the falling trends late in previous interglaciations (Fig. 1 a).
- W.F. Ruddiman, F. He, S.J. Vavrus, J.E. Kutzbach
- 2020
Apr 6, 2009 · Ruddiman’s work highlights the breakdown of certain cycles in the Earth’s atmosphere. He uses ice core records to show that levels of atmospheric methane – which have waxed and waned every 23,000 years for the last 40,000 – bucked a downward trend roughly 5,000 years ago and have increased steadily more-or-less ever since.
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Oct 31, 2007 · Abstract. [1] Ruddiman (2003) proposed that late Holocene anthropogenic intervention caused CH 4 and CO 2 increases that kept climate from cooling and that preindustrial pandemics caused CO 2 decreases and a small cooling.
