Upper Air hpa Contours
-
I suggest you add as a display layer of Isobar Contours lines with interval of four millibars for the following layers; hpa850, hpa700, hpa500, and hpa250, or it could be optional in the altitude icon. And it would be great to overlap the Isotherm Contours lines too in different colour with interval of five degrees.
-
What is the meaning of the different levels 850hPa, 700hPa, 500hPa…. ? These are the surfaces where all points are at same pressure. So you cannot show isobars at these pressure levels. At 850hPa all points are at 850hPa, or 850 millibars if you prefer. They are called isobaric surfaces.
It is the reason why meteorologists use the geopotential heights of these pressure surfaces, but not isobars at these levels.
Weather models like those shown in Windy compute the forecast parameters at these pressure levels and consequently they don’t provide predicted pressure aloft, but only at sea level.
https://codes.ecmwf.int/grib/param-db/151The GP heights are available in Windy as contours. They are the Geopotential height isolines expressed in meters and called isohypses.
Example in the mobile app:
See
https://www.meteor.wisc.edu/~hopkins/aos100/upairmap.htm -
Many thanks. I didn’t know there are available. Now I found it. Thanks again.
-
-
@Norman-Vine
The example here above is from the browser version.
In the mobile app, you should have these settings.Geopotential heights isolines displayed on Temperature layer with customised color scale
-
I idefix37 referenced this topic on
-
@idefix37 thank you!! I was getting confused by it not working with all layers. eg works with 'wind' not 'wind gusts' etc
-
@Norman-Vine
Because Wind gusts are a parameter only forecast at surface.
