The US standard is a three decade running mean calculated every decade,
not annually.
http://www.hprcc.unl.edu/nebraska/climatenormals.html
So the "normal" band is calculated with respect to 1970-2000 means. The
1970s were quite cold in much of the US, recall. It's hard to make the
case that the graphic understates the current anomaly.
On Jan 4, 3:46 pm, "The Cunctator" <[EMAIL PROTECTED]> wrote:
Given the assumption of a changing climate, better charting would somehow
give people a sense of the rate of change (not sure the best way to do
that--any ideas?)
I would say that when we get to the point where there is no useful 30
year climatology we will have other things to worry about besides
convincing the public that something odd is going on.
I am sure there is little remaining doubt in Wisconsin already, where a
significant snow-based tourism (cross country skiing and snowmobiling
resort) industry has collapsed over the past few years.
By the way, Madison's first major industry was exporting ice to the
Chicago meat packing plants! This year may well be the first time on
record that the ice "crop" fails entirely!
mt
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