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    temperature discrepancy between METAR and Elev/PA/DA picker. Bug ?

    Windy Translation & Localization
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    • L
      lweinlan last edited by lweinlan

      There seems to be a discrepancy between the temperature shown in a METAR for an airport and the temperature shown in the Elev/PA/DA picker for the same airport. If the discrepancy is confirmed by the Windy team, it would be beneficial to fix this issue in order to show the correct DA (Density Altitude) in the Elev/PA/DA picker. The DA is a very important piece of information for aviators when they calculate aircraft performances. An incorrect DA can lead to incorrect take-off and landing runways calculations, which could lead to potential accidents. I understand that the Windy information should not be taken for real navigational purposes but still, I think displaying the correct DA is important. Thank you. See attached screenshot. temperature discrepancy aviation.jpg

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

        @lweinlan
        Question: Temp. 19.1 comes from meteo. observation (real measurment)
        or its a forecast value from wx. model?

        (19.1 sounds strange to me
        because temp. is always rounded (in a whole degree) in METARs)

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

          DA 1195 logically is incorrect for 14 C
          as it is computed for temp. 19.1 C
          "What you put in is what you get out"

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

            @ plugin developers
            57e1b839-4a97-4e86-be73-86290c3da128-εικόνα.png

            L Korina 3 Replies Last reply Reply Quote 1
            • L
              lweinlan @Gkikas LGPZ last edited by lweinlan

              @Gkikas-LGPZ yes, exactly. Where does the 14 Celcius comes from in the picker ? The METAR temperature of 23 Celcius at Santa Ynez Airport (KIZA) is the official FAA (Federal Aviation Administration) temperature reported at the airport. There is an AWOS-3 automated weather reporting station (unmanned) at KIZA. The AWOS-3 reports weather typically once every 20 minutes.

              1 Reply Last reply Reply Quote 1
              • Korina
                Korina Administrator @Gkikas LGPZ last edited by

                @Gkikas-LGPZ Hello, how did you please get this picker format? I am only able to display temperature -

                Screenshot 2020-05-18 at 19.30.28.png

                Korina

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

                  @Korina
                  I used density altitude plugin.

                  1 Reply Last reply Reply Quote 1
                  • Korina
                    Korina Administrator @Gkikas LGPZ last edited by

                    @Gkikas-LGPZ said in temperature discrepancy between METAR and Elev/PA/DA picker. Bug ?:

                    @ plugin developers
                    57e1b839-4a97-4e86-be73-86290c3da128-εικόνα.png

                    @rittels Hi, since you are the developer of this plugin, would you be able to clarify, where does the temperate 14C come from? It does not correspond with the observed values nor the forecast.

                    Korina

                    rittels 2 Replies Last reply Reply Quote 0
                    • rittels
                      rittels Code contributor @Korina | Premium last edited by

                      @Korina @lweinlan

                      There is indeed a bug. The Data comes from dataLoader function, which is throttled to 3 calls/sec when dragging. Unfortunately it does not update correctly on dragend. Will report when fixed. Thanks for letting me know.

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

                        @Korina @lweinlan

                        Fixed the bug, however temp still differs with up to 1 degree from picker value. The DA plugin uses forecast data of dataLoader, while I think the picker displays airdata, surface level. Also the picker shows interpolated value, where dataLoader shows nearest point, 10-11km resolution on ECMWF.

                        Korina 1 Reply Last reply Reply Quote 2
                        • Korina
                          Korina Administrator @rittels last edited by

                          @rittels Hi, thank you for the update!

                          Korina

                          1 Reply Last reply Reply Quote 0
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