Tuesday - November 20, 2007

Global Warming Update

Courtesy of my dear brother, I learn that a learned paper has been published by the National Counsil for Air and Stream Improvement, Inc (NCASI) looking at a 2,000 year trend in temperatures.

Abstract:
Historical data provide a baseline for judging how anomalous recent temperature changes are and for assessing the degree to which organisms are likely to be adversely affected by current or future warming. Climate histories are commonly reconstructed from a variety of sources, including ice cores, tree rings, and sediment. Tree-ring data, being the most abundant for recent centuries, tend to dominate reconstructions. There are reasons to believe that tree ring data may not properly capture long-term climate changes. In this study, eighteen 2000-year-long series were obtained that were not based on tree ring data. Data in each series were smoothed with a 30-year running mean. All data were then converted to anomalies by subtracting the mean of each series from that series. The overall mean series was then computed by simple averaging. The mean time series shows quite coherent structure. The mean series shows the Medieval Warm Period (MWP) and Little Ice Age (LIA) quite clearly, with the MWP being approximately 0.3°C warmer than 20th century values at these eighteen sites.

They have a lovely graph showing how this all panned out.

Notice that it was actually warmer 1,000 years ago?  And we are now in a cooling period?

And that, my friends, is why its now referred to as “Climate Change” and not “Global Warming” by the darling media.

**Update**
I almost forgot...I’m really digging this global warming by the way.  Today is 65 degrees and tomorrow is supposed to be 75!  In November!  In the Shenandoah Valley!

I’ll take this every year.

Posted by Drew458     on 11/20/2007 at 01:55 PM   
Filed Under: • Climate-Weather •  
• Comments (1) • Trackbacks(0)  Permalink •  

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