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Politics : GOPwinger Lies/Distortions/Omissions/Perversions of Truth -- Ignore unavailable to you. Want to Upgrade?

To: longnshort who wrote (87586)	2/9/2007 11:49:50 PM
From: Kevin Rose	Read Replies (1) \| Respond to of 173976

In fact, these cycles may not even be global, and were much more moderate than the current warming: As with the “Little Ice Age”, the posited “Medieval Warm Period” appears to have been less distinct, more moderate in amplitude, and somewhat different in timing at the hemispheric scale than is typically inferred for the conventionally-defined European epoch. The Northern Hemisphere mean temperature estimates of Jones et al. (1998), Mann et al. (1999), and Crowley and Lowery (2000) show temperatures from the 11th to 14th centuries to be about 0.2°C warmer than those from the 15th to 19th centuries, but rather below mid-20th century temperatures. The long-term hemispheric trend is best described as a modest and irregular cooling from AD 1000 to around 1850 to 1900, followed by an abrupt 20th century warming. Regional evidence is, however, quite variable grida.no