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More Evidence for a Truly Global Little Ice Age by Sherwood, Keith and Craig Idso
Article Tags: Craig Idso
In an attempt to rewrite earth’s climatic history, certain scientists have long contended that the relative coldness of the Little Ice Age and the relative warmth of the Medieval Warm Period were not particularly great in extent (spatial coverage of the earth) nor in magnitude (degree of deviation from the long-term mean), in order to make the global warming of the latter part of the 20th century appear highly unusual, which they equate with anthropogenic-induced, which they associate with the historical rise in the air’s CO2 content, which provided them a reason to call for dramatic reductions in the use of fossil fuels, such as coal, gas and oil, which reductions we believe to be unwarranted.
Consequently, we weekly peruse the most recent scientific literature for newly-discovered real-world paleoclimatic evidence related to the question of whether or not the Little Ice Age and Medieval Warm Period were truly global phenomena. And we here discuss the findings of one such paper (Simms et al., 2012) that provides evidence for the Little Ice Age occurring on a portion of Antarctica – the South Shetland Islands (SSI) – at essentially the same time as it occurred in the Northern Hemisphere.
Very briefly, the five researchers used a new approach to dating remnants of raised beaches in the SSI of the northern Antarctic Peninsula, in order “to bracket the age of a Neoglacial advance that occurred between 1500 and 1700 AD.” This approach, as they describe it, was based on measurements of the “optically stimulated luminescence of the underside of buried cobbles to obtain the age of beaches previously shown to have been deposited immediately inside and outside the moraines of the most recent Neoglacial advance.”
Source: co2science.org
2012-11-14 14:53:27
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