Hi
I too applaud Scott's attempt to produce a Winter Index.
But does anyone have the article in the Weather magazine (maybe from the 1970's) on the same topic of "Winter Index"? I'm sure that it followed a similar article on a "Summer Index".
As a Summer Index would require temperature, precipitation and sunshine, then a winter index can only work if you include both precipitation (ideally snowfall) and temperature anomalies.
I tried to do this earlier this year in a blog I called "Central England Snowfall" in which I attempted to link CET and EWR. What it showed was: If you like snow 1946/47 is the winter to beat (although 1978/79 came close especially in the north), and if you like cold 1962/63 was intensely cold and rather dry.
Bruce.
PS Here's a link to my "Central England Snowfall" blog.
http://xmetman.wordpress.com/2013/08...land-snowfall/