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Temperature average again

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HansR
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Temperature average again

Post by HansR »

Just informational, not restarting the discussion. :)
We had some interesting discussions in the past on the calculation of the average temperature (read here and here, I thought it was an interesting re-read).
As a result I created my chart 'Clash of Averages' and below you find the screenshot for the last two months. Why I show this is because the difference between the CMX average and the (Tmax+Tmin)/2 estimator has for the first time in four years reached 4 °C. I find that a lot (normally it is around 1 degree).

For the relevance of this number read the referenced discussions and look into the meaning of Tavg in climate discussions.
    Schermafbeelding 2022-06-17 152317.jpg
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    Hans

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    freddie
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    Re: Temperature average again

    Post by freddie »

    It's interesting to note that the difference line averages out (by eye) at or just below zero. It would be interesting to know the average over a long period of time.
    Freddie
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    HansR
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    Re: Temperature average again

    Post by HansR »

    freddie wrote: Fri 17 Jun 2022 5:07 pm It's interesting to note that the difference line averages out (by eye) at or just below zero. It would be interesting to know the average over a long period of time.
    I can tell you that straight away:

    2022-06-16 22:07:32.972 Information GenerateClashOfAverages: Sum CumulusAverage 10,64342
    2022-06-16 22:07:32.973 Information GenerateClashOfAverages: Sum MinMaxAverage 10,78755

    To be clear: these are the averages of the daily average temperature as found in the dayfile over a four year period on my station and the the minmax average on the same days over the same period. So the minmax average is a bit higher by 0.14 °C which is quite a lot on long term series (of which mine is a short one :) ).

    (But anyway, any installation of CUtils finds these figures in the logfile (having logging set to info) )
    Hans

    https://meteo-wagenborgen.nl
    https://meteo-wagenborgen.nl/CMX4
    CMX build 3183 ● Ecowitt GW1100/WS80/WH40 ● RPi 3B+ ● Raspberry OS 5.15.32 ● Mono 6.8.0.105
    CMX build 40xx ● Ecowitt GW1100/WS80/WH40 ● RPi 4B ● Raspberry OS 5.15.32 ● .NET 6.0.1
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