In message
Dave wrote:

I haven't updated this graph for several years but, with the December
2015 CET available, I thought now would be a good time to update it.

Using the Central England Temperature Series (CET) Monthly Mean, I
have plotted the rolling averages over the following period lengths.

Red Line - 1 Year
Green Line - 5 Years
Purple Line - 10 Years
Dark Blue Line - 20 Years
Orange Line - 30 Years
Light Blue Line - 50 Years
Pink Line - 100 Years

The graph starts at Dec 1969, so the Pink 100 years line effectively
covers the whole period from 01-Jan-1870 through to 31-Dec-2015.

The graph in A3 PDF format can be viewed by clinking the link below on
MyCloud. Hopefully this will prompt a healthy, but polite debate.

Interesting! Shows a long term warming trend as expected, but also
seems to show cooling trend since about 2006 in 20 year means and
shorter. Probably too soon to draw any long term conclusions from
that though.

Also for the longer term trends, the longer the average, the less
warming we see. Suggests that warming has accelerated, then declined
or turned negative.




http://WDMyCloud.device2880223.wd2go.../file_contents
/Public/Weather/CET%20Graph%20Since%201969.pdf?device_user_id=1876 9064
&request_auth_code=a19b44ca3af8fe73887d35f5872a59c 6deb9fffc7d10809fca3
c94c7d0d6a696





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