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    Uncertainty on Atmospheric Pressure

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    pressure air pressure
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    • G
      graigbefathered
      last edited by

      I did a science experiment for my chemistry class on boiling point, and one of the things I had to record was atmospheric pressure, which I used windy for. However, I need to include an uncertainty in my data, so I was wondering if anyone knew what the uncertainty (or error) on the pressure readings is (for example, ±1 hPa or something like that). I'd appreciate a rapid response as this lab report is due on monday 😬. Thanks in advance :)

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      • idefix37I
        idefix37 Sailor Moderator
        last edited by idefix37

        @graigbefathered said in Uncertainty on Atmospheric Pressure:

        what the uncertainty (or error) on the pressure readings

        What Windy shows is not reported pressure, but forecast pressure. The pressure shown by Windy is predicted by the model after interpolation between grid points It is the first cause of error. If you look at the pressure values by the different weather models at your location, you will get an idea of the uncertainty.
        Personally I would prefer to use the pressure readings at the nearest professional weather station to your location.
        Reported pressure at weather station is not displayed in Windy.

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