Wednesday, December 23, 2009

dangerous beauty

Just before the power went out, I spent an hour tromping around documenting the snow fall. Notice how much snow is on the telephone and power lines!

This is the most snow we gotten since we've lived in eastern Kentucky (now 13 years). And its the second major snow before Christmas -- a highly unusual occurrence. For those in the know, this is just another example of the weather weirding that results form over all global warming. Here's the explanation:

The unprecedented melting of arctic sea ice the past two summers has undoubtedly had a significant impact on the early winter weather over the Northern Hemisphere. Several modeling studies presented at the December AGU meeting showed that sea ice melt on this scale is capable of injecting enough heat into the atmosphere to result in a major shift in the jet stream. Dr. Overland [Jim Overland of NOAA's Pacific Marine Environmental Laboratory] remarked that the early cold winter over North America this winter, and the exceptionally cold and snowy early winter in China last winter, were likely related to arctic sea ice loss. The sea ice loss induced a strong poleward flow of warm air over eastern Siberia, and a return flow of cold air from the Pole developed to compensate. Thus regions on either side of eastern Siberia--China and North America--have gotten unusually cold and snowy winters as a result. Source: Dr. Jeff Masters' WunderBlog

Not all signs of global warming are warmer days, instead what we see are important shifts and changes in the weather patterns.