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    windy-plugin-skewt – new features :)

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    • Yves70
      Yves70 Meteorologist | Premium last edited by Yves70

      @johnckealy
      Hello John, nice new features ! I discovered the new feature with the slider, to get access to LI index but I didn’t now that we could now see the forecast together with the SkewT. This is great. Good work !

      1 Reply Last reply Reply Quote 0
      • Yves70
        Yves70 Meteorologist | Premium last edited by Yves70

        @johnckealy
        One remark : if the SkewT disappear and not the picker, if I open it, I can see your plugin

        66CA5C82-5E4D-4CAD-AF3C-00152F41C664.jpeg

        Now if I click on SkewT (see the picture), I cannot open it, it doesn’t work although it works with the sounding, just above SkewT in the list.

        To re-open SkewT, I have to close the picker and chose the location again to open it.

        Are you aware about this ?

        1 Reply Last reply Reply Quote 0
        • johnckealy
          johnckealy last edited by

          @Yves70, awesome, thanks for that. Guess I never really open it that way! I'll look into it, sounds very fixable :)

          1 Reply Last reply Reply Quote 1
          • Gkikas LGPZ
            Gkikas LGPZ Moderator @johnckealy last edited by Gkikas LGPZ

            @johnckealy
            Hi John!
            You did a great job!
            Please, if possible, add the temp. of the purple dot
            so we could know the temp. ascent starts.
            P.S. I like the old fashioned (traditional) background with the green lines!
            It reminds me my first years in the job.

            Gkikas LGPZ 1 Reply Last reply Reply Quote 2
            • Gkikas LGPZ
              Gkikas LGPZ Moderator @Gkikas LGPZ last edited by

              ....
              hmmm
              what's the temperature at 250 hPa ?
              -42 or -44 C ?
              250 hPa.jpg

              Maybe the problem starts from this
              https://community.windy.com/topic/7963/upper-air-temperatures

              1 Reply Last reply Reply Quote 0
              • Yves70
                Yves70 Meteorologist | Premium last edited by

                @Gkikas-LGPZ
                Did you see other discrepancies at other levels between temperatures of the sounding and the map ?

                Gkikas LGPZ 1 Reply Last reply Reply Quote 0
                • Gkikas LGPZ
                  Gkikas LGPZ Moderator @Yves70 last edited by

                  @Yves70
                  No.
                  Please read the following post to the end.
                  https://community.windy.com/topic/7963/upper-air-temperatures

                  1 Reply Last reply Reply Quote 1
                  • Yves70
                    Yves70 Meteorologist | Premium last edited by

                    Correlation seems to be good at other levels :

                    Capture d’écran 2020-10-08 à 11.58.42.png
                    Capture d’écran 2020-10-08 à 11.58.11.png
                    Capture d’écran 2020-10-08 à 11.56.57.png

                    1 Reply Last reply Reply Quote 1
                    • rittels
                      rittels Code contributor @johnckealy | Premium last edited by

                      @johnckealy

                      Well done. Very cool.

                      The skewT overlaps the detail a bit, at least on my screen.

                      There is an error in the console:

                      Error: attribute d: Expected number, "MNaN,NaNLNaN,NaNL…".

                      1 Reply Last reply Reply Quote 0
                      • johnckealy
                        johnckealy last edited by

                        Amazing feedback, thanks everyone!

                        @rittels, the skewT is overlapping the spot forecast? I'll look into that. Man I hate cross-browser incompatibility! The error you see isn't anything to worry about, been meaning to find a way to suppress it. It's just the data points in the ascent that I didn't want shown.

                        Thanks for the info on the temperature discrepancy too @Gkikas-LGPZ and @Yves70, I'll have a look into that for the next version.

                        1 Reply Last reply Reply Quote 1
                        • johnckealy
                          johnckealy last edited by

                          Hi All,

                          windy-plugin-skewt now has a radiosonde feature. I'm still testing it, but please let me know any feedback :)

                          Gkikas LGPZ 1 Reply Last reply Reply Quote 0
                          • Gkikas LGPZ
                            Gkikas LGPZ Moderator @johnckealy last edited by

                            @johnckealy
                            Wrong data for 250hPa (FL340).
                            5ac72c37-7203-4718-ab9a-d5c70244befd-εικόνα.png

                            It seems your plugin doesnt take into account data for 250 hPa (nor interpolate 300~200 hPa data).

                            Same problem found here https://community.windy.com/topic/7963/upper-air-temperatures
                            Also read https://community.windy.com/topic/13921/windy-plugin-skewt-new-features/5?_=1615067856664

                            1 Reply Last reply Reply Quote 2
                            • johnckealy
                              johnckealy last edited by

                              Thanks for the feeback @Gkikas-LGPZ. Easy fix. Either I had originally missed it, or it was added by Windy later, but there is indeed a 250mb datapoint. All I had to do was add it in. You may need to give it a few hours to update, but I've published the change.

                              1 Reply Last reply Reply Quote 3
                              • EduardoSG
                                EduardoSG | Premium last edited by

                                Nice plugin !

                                It seems you have something wrong when calculating altitude related to pressure
                                wind.png

                                1 Reply Last reply Reply Quote 1
                                • johnckealy
                                  johnckealy last edited by

                                  Hey @EduardoSG

                                  sorry if I'm being slow, but what's the issue?

                                  z = -H * log(P/Po)

                                  so 500 hPa should be around 7000 m, no?

                                  Gkikas LGPZ Yves70 2 Replies Last reply Reply Quote 0
                                  • Gkikas LGPZ
                                    Gkikas LGPZ Moderator @johnckealy last edited by

                                    @johnckealy
                                    500 hPa gph rarely observed higher than 6000m

                                    1 Reply Last reply Reply Quote 1
                                    • Yves70
                                      Yves70 Meteorologist @johnckealy | Premium last edited by

                                      @johnckealy
                                      John, 500hPa is about 5500m

                                      1 Reply Last reply Reply Quote 1
                                      • johnckealy
                                        johnckealy last edited by

                                        @Yves70 @Gkikas-LGPZ

                                        I just use the above equation in that calculation, it's just an estimate. Is there a better equation I can use? If not, suggestions on how to approach it? It's been a while since I did this stuff.

                                        Gkikas LGPZ 1 Reply Last reply Reply Quote 0
                                        • Gkikas LGPZ
                                          Gkikas LGPZ Moderator @johnckealy last edited by Gkikas LGPZ

                                          @johnckealy
                                          https://www.math24.net/barometric-formula
                                          Also see "example1"

                                          1 Reply Last reply Reply Quote 1
                                          • vsinceac
                                            vsinceac | Premium last edited by vsinceac

                                            There is also this NOAA online calculator with corresponding formula.

                                            ¯\_(ツ)_/¯

                                            1 Reply Last reply Reply Quote 2
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