Study: More Extreme Climate Existed Prior to Pre-industrial Era

Written by Myles, PSI Researcher

University of Vermont climate study of sedimentary cores shows periods of extreme storminess occurred thousands of years before any human influence. cyclone

Previous periods of extreme storminess: A 13,000 year scientific study of lake sediments by the reliable method of drilling and retrieving cores reveals that the climate of the United States has been through numerous periods of more extreme climate. The research explains:

   “ Storm magnitude, as estimated by average terrigenous layer thickness, was greatest at 11,800, 10,800, and 1,200 years before present, when New England climate was cool and moist.”

   “Storminess reached variable maxima lasting ~1,500 years, centered at approximately 2,600, 5,800, 9,100, and 11,900 years ago, and appears to be presently increasing toward another peak.”

https://www.uvm.edu/cosmolab/people/noren/noren_ms_thesis.pdf

Here we see the periods of greatest climate variation from the established normal happen when conditions are “cool and moist,” which runs contrary to current climate alarmism theory which states that a warmer, drier climate will result in more extreme events.

The research points out that the USA is “increasing towards another peak” in storminess therefore the peaks of extreme climate were larger before the industrial revolution that started in 1851.

This would indicate that variations from the stated “normal” for earth’s climate, as set by the 1961-1990 average relied on by climate science, is not anomalous. We can also clearly see that periods of more extreme climate have happened many times before and that carbon dioxide (CO2) did not drive these extrem events.

A more extreme climate before the industrial revolution

The Industrial Revolution is set by climate alarmists as the bench mark for the start of the rise in atmospheric CO2 caused by humans. Therefore events before this are obviously not caused by human emissions of CO2. According to the so-called greenhouse gas theory, more CO2 in the atmosphere causes more warming.

Using 18 lake sediment cores, the study establishes a 13,000-year storm chronology for the northeastern United States. This is the longest storm record yet established for this region, and reveals regional storm patterns not identifiable from single lake records.

The study took 18 long (3.5 to 6 m) sediment cores from 11 small (0.03 to 4 km2), deep (13 to 32 m) lakes with inflowing streams and surrounded by steep hillslopes across a ~20,000 km2 region in Vermont and eastern New York.

Twelve of the 18 cores were dated and thoroughly analyzed (the remaining 6 cores were either duplicates or contained deeper sediment from the same location as another core from the same lake).

It is shown that during the Medieval Warm Period there were extensive droughts in the USA. These were far larger and longer than anything recorded since the industrial revolution and spanned “multi decadal” time periods.

mwp mega droughts

Sedime were serious drought periods of great severity between 1021-1051 AD then 1130 – 1170, 1240 – 1265 and 1360 – 1382 AD as is recorded in tree ring data in the research titled The characteristics and likely causes of the Medieval megadroughts in North America.” Richard SeagerCeline Herweijer and Ed Cook. Lamont-Doherty Earth Observatory of Columbia University.

 

http://www.ldeo.columbia.edu/res/div/ocp/drought/medieval.shtml

These Medieval Mega Droughts are shown in the reliable research to be of a more extreme nature than anything at present. The authors conclude that:  “The similarity of the spatial patterns suggests that the physical processes that caused the modern droughts also caused the medieval megadroughts.”  

It is possible to extrapolate from this that as there is no direct link with CO2 levels here either.

The extreme Little Ice Age

And then there is of course the far colder than “normal” climate of the Little Ice Age that followed the medieval Warm Period and its extreme droughts. The beginning of this was marked by an extreme climate event called “The great famine”.The Great Famine started with bad weather in spring 1315. Universal crop failures lasted through 1316 until the summer harvest in 1317, and Europe did not fully recover until 1322. The period was marked by extreme levels of crime, disease, mass death, and even cannibalism and infanticide.”

“In the spring of 1315, unusually heavy rain began in much of Europe. It continued to rain throughout the spring and summer, and the temperature remained cool. These conditions caused widespread crop failures. The straw and hay for the animals could not be properly dried, so there was no fodder or bedding for the livestock. The price of food began to rise, doubling in England between spring and midsummer.”

Here again we can see what is now termed extreme climate events caused millions of deaths. Far worse than anything experienced since the industrial revolution.

Modern extremes?

If we can rely on this research then we may say that the modern period of allegedly extreme climate is an extreme from what they term normal but in no way comes up to the standards of extreme climate from a long term point of view.        

(Myles. Nov 2015.)