Talk:Central England temperature

Comment
How were temperatures measured in 1659? How accurate was it? The first mercury thermometer was invented in 1714 - see thermometer.


 * Read Manley's two seminal papers describing his methodology and results, and your questions will be answered. Those papers are referenced in the article. JH (talk page) 16:54, 27 April 2007 (UTC)

I have added some details to the extrema section to emphasise the remarkable difference between the current conditions and historic norms. I hope that this backs up the original author's point of how valuable the CET series is.--AssegaiAli 19:17, 7 October 2007 (UTC)

It's now 2014 and the 'remarkable difference' has disappeared. I'll only get into trouble with a climate-change zealot if I remove the graph to 2007, but at the bottom of the main page there's the link to the current (and on-going) graph (http://www.metoffice.gov.uk/hadobs/hadcet/), with the real data to 2014 showing the blip in temps in the late 90s more or less disappeared. — Preceding unsigned comment added by 146.200.52.2 (talk) 00:12, 28 July 2014 (UTC)

Smoothed line
The graph on this page appears to be a running mean rather than yearly data, would it be better to have a year-by-year graph? —Preceding unsigned comment added by Alexllew (talk • contribs) 17:15, 7 February 2008 (UTC)

Congratulations to the writers
Can I give some praise to this article which is noteworthy amongst the articles on climate in its NPOV. I was particularly impressed that someone had produced a trend line from which it was possible to discern how the short 2-3decade trend which could be caused by CO2 fitted on top of the long term trend. The only criticism I would make is that there is no analysis showing how the current short-term upswing compares to the similar upswing from the average around the 1740s, and it was difficult to work out the date from the graph.

I will try to monitor this page, and I will know it has joined the rest of the non NPOV articles on climate, when someone draws a new graph without the long term trend and with a much exaggerated vertical scale intended to highlight the latest upswing and to downplay any previous upswings. 88.109.22.106 (talk) 12:14, 5 February 2009 (UTC)

Annual CET Extrema
This page states that the hottest year in the CET sequence was 2006, with a mean temperature of 10.82c, which is the figure quoted on the Met. Office website. However, in practice, this was only the hottest calendar year. When rolling annual CET figures are calculated from monthly averages, the hottest year (period of 12 months), was actually the year ended April 2007, with a figure of 11.63c. In fact, there have been 13 periods of 12 months which have exceeded the figure of 10.82c. These were as follows (Year ending/Mean CET) Apr-90 10.83, Sep-95 10.84, Oct-95 11.07, Nov-95 10.87, Jan-07 11.05, Feb-07 11.23, Mar-07 11.42, Apr-07 11.63, May-07 11.60, Jun-07 11.53, Jul-07 11.16, Aug-07 11.10, Sep-07 10.85,

It should also be noted that while, based on calendar years, there were no years where the CET exceeded 10.5c until the calendar year 1949, using the rolling annual calculation, the 12 month period ending July 1737 actually reached 10.58c. Similarly, the first calendar year, to exceed 10.7c was 2006 but using the rolling annual calculation, the first was actually the 12 months ending October 1779, at 10.73c. Rjm111 (talk) 20:54, 12 July 2009 (UTC)


 * Interesting stuff. Why not add some of it to the article. JH (talk page) 09:06, 13 July 2009 (UTC)

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