Whippedboy -> RE: Who Worries about Global Warming? (4/7/2014 11:38:42 PM)
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ORIGINAL: Phydeaux Global ice cores, Nasa satellite data, European satellite data not enough.. eh? So here's a pretty picture from earth observatory... Does this look like global warming to you? [image]local://upfiles/11137/EC399CEC2B0A4526BC5F8A607E659A6A.jpg[/image] While I am sure we are all enjoying your cut/paste-a-thon I thought I would round out the story you Repubs seem to cut short regarding your medieval warming. A couple of notes you left out--"Despite substantial uncertainties, especially for the period prior to 1600 for which data are scarce, the warmest period of the last 2,000 years prior to the 20th century very likely occurred between 950 and 1100, but temperatures were probably between 0.1 °C and 0.2 °C below the 1961 to 1990 mean and significantly below the level shown by instrumental data after 1980." So, basically, you're wrong. Also,"Secondly, the Medieval Warm Period has KNOWN causes which explain both the scale of the warmth and the pattern. It has now become clear to scientists that the Medieval Warm Period occurred during a time which had higher than average solar radiation and less volcanic activity (both resulting in warming). New evidence is also suggesting that changes in ocean circulation patterns played a very important role in bringing warmer seawater into the North Atlantic. This explains much of the extraordinary warmth in that region. These causes of warming contrast significantly with today's warming, which we know cannot be caused by the same mechanisms." "In 1965 British climatologist Hubert Horace Lamb examined historical records of harvests and precipitation, along with early ice-core and tree-ring data, and concluded that the MWP was probably 1–2 °C (1.8–3.6 °F) warmer than early 20th-century conditions in Europe. Attempts to calculate global temperature changes during the MWP, even using modern instrumental and ice-core sampling techniques, have been inconclusive." "Overall, our conclusions are: a) Globally temperatures are warmer than they have been during the last 2,000 years, and b) the causes of Medieval warming are not the same as those causing late 20th century warming." Hey! Look! Read, I mean--Woook at the pwetty picture." And I saw the ONE article you quoted all over the place to make it seem as if there were MANY references, but sadly there was only one. With one source... It's from Global Research. Not necessarily bad but not best known for their investigative reporting. [image]local://upfiles/58779/A4C0596EC5E54F8CA7FB08FB29EC1FB1.gif[/image]
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