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    Valley height error in Soundings

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    • MaurikM Offline
      Maurik | Premium
      last edited by

      Today, July 1, 2024, I suddenly encountered a new error in Soundings. The valley height in the valleys between the mountains is no longer displayed properly. see brown bar in the picture that ends at 900m while ground level is 650m. The height is of the surrounding mountains. See, for example, the locations of Samoens, Mieussy and Chamonix in France.

      03db74d4-1398-4e2a-a2d1-675ef197aab6-image.png

      Gkikas LGPZG 1 Reply Last reply Reply Quote 0
      • Gkikas LGPZG Offline
        Gkikas LGPZ Moderator Meteorologist @Maurik
        last edited by

        @Maurik
        The sounding you provide, shows data from a weather model.
        "Surface", on a model, may have different altitude than the real one,
        because of the smoothing and depends on model's grid.

        Samoens has (real) elevation 700m ...

        313ac79b-b3c0-487d-bdca-fbe16c173f46-εικόνα.png

        ... but ECMWF (grid 9 km) treats it as in 1490 m !!!

        d5dfaef9-1c06-446b-a5e6-f8091a8f3a03-εικόνα.png

        ... ICON-D2 (grid 2.2 km) "shows" surface at 835m (much closer to reality).

        d0c8f3db-48e2-4645-b23e-d67a9673f8f4-εικόνα.png

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