During the period that followed, the Dark Ages, when "civilization" collapsed under the invasions of the west by various German tribes and the Huns, was an extended period of cooling that was accompanied by starvation, disease, and the serious decline in population.
In roughly the 10th Century occur ed what has been called the Medieval Warming period. It's during this period that the cultivation of grapes was for several hundred years, was successful...in of all places, England. For more than 400 years it was considerably warmer, perhaps as much as 5ºC warmer. Once again, the "seas did not rise" nor did the ice sheets disappear. What came next has been called the "The Little Ice Age" when temperatures were much colder and remained until roughly 1850. It comes as no surprise that after 4 Centuries of cooling, temperature began to rise once more. Plim states that,
Unless I have missed something, I am not aware of heavy industry, coal-fired power stations, or SUVs in the 1,000 years of Roman and Medieval Warmings. These natural warmings are a dreadful nuisance for climate alarmists because they suggest that the warming since 1850 may be natural and may not be related to carbon dioxide emissions.Plim is right, and here is the smoking gun. It's an email from:
There was warming from 1860 to 1880, 1910 to 1940, and 1976 to 1998, with intervening periods of cooling. The only time when temperature rise paralleled carbon dioxide emissions was 1976-1998. The other warmings and coolings in the last 150 years were unrelated to carbon dioxide emissions.
Something is seriously wrong. To argue that humans change climate requires abandoning all we know about history, archaeology, geology, astronomy, and solar physics. This is exactly what has been done.
Files from the UK Climatic Research Unit were hacked. They show that data was massaged, numbers were fudged, diagrams were biased, there was destruction of data after freedom of information requests, and there was refusal to submit taxpayer-funded data for independent examination.
Data were manipulated to show that the Medieval Warming didn’t occur, and that we are not in a period of cooling. Furthermore, the warming of the 20th century was artificially inflated.
The answer to this enigma was revealed last week. It is fraud.
From: Kevin TrenberthEmphasis is mine...and well placed. The scientists themselves at CRU admit that they can't replicate historica data, much less predict the future.
To: Michael Mann
Subject: Re: BBC U-turn on climate
Date: Mon, 12 Oct 2009 08:57:37 -0600
Cc: Stephen H Schneider, Myles Allen, peter stott, “Philip D. Jones”, Benjamin Santer, Tom Wigley, Thomas R Karl, Gavin Schmidt, James Hansen, Michael Oppenheimer
Well I have my own article on where the heck is global warming? We are asking that here in Boulder where we have broken records the past two days for the coldest days on record. We had 4 inches of snow. The high the last 2 days was below 30F and the normal is 69F, and it smashed the previous records for these days by 10F. The low was about 18F and also a record low, well below the previous record low.
This is January weather (see the Rockies baseball playoff game was canceled on Saturday and then played last night in below freezing weather). …
The fact is that we can’t account for the lack of warming at the moment and it is a travesty that we can’t. The CERES data published in the August BAMS 09 supplement on 2008 shows there should be even more warming: but the data are surely wrong. Our observing system is inadequate.