Fronts
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Love this app. Why dont you have a map option showing weather fronts?
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@Roy-Ballentine Hi, we’re glad you like our app. We don’t include weather fronts because proper frontal analysis requires a meteorologist. See related posts. Have a nice day, Jari
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Hi @Jari-Sochorová ,
This appears to be the standard response whenever the suggestion of Fronts is raised. To be fair, it doest really need a human meteorologist to identify the frontal zones of warm and cold air masses. Another feature that has been frequently requested is for the display of "500-1000 hPa thickness isolines" which is available from ECMWF. With this data, the location of frontal zones can then be computed.
From the ECMWF website:
500-1000 hPa thickness is a measure of the mean temperature of a column of the atmosphere between these pressure levels and can be used to distinguish between warm and cold air masses and to indicate frontal zones (i.e. areas of large temperature gradient, where the thickness values are more closely packed together). Roughly, 500-1000 hPa thicknesses below about 528 dam imply air coming from polar regions and thicknesses above 564 dam imply air coming from tropical areas. -
@Gromit-Garden
Another way to estimate roughly warm and cold fronts is to set the temperature layer at 850hPa. Meteorologists rather look at the equivalent potential temperature (θe) at this level, but the temperature can be used in the cold season.
See this post. Note I use a customised color scale for temperature.
In addition an active cold front makes the wind veering up to 90°. -
I idefix37 referenced this topic
