windy-plugin-skewt – new features :)
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Hi all, (@Gkikas-LGPZ @vicb @rittels @stitch @yves @jacobsjo @marekd )
I did a big update of
windy-plugin-skewtover the weekend, was wondering if you'd like to check it out. You can now move the purple slider at the surface temperature to get a parcel ascent. Also, it's now possible to open the skewT and spot forecast simultaneously.Would really appreciate any feedback or bug reports!
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@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 ! -
@johnckealy
One remark : if the SkewT disappear and not the picker, if I open it, I can see your plugin
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 ?
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@Yves70, awesome, thanks for that. Guess I never really open it that way! I'll look into it, sounds very fixable :)
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@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. -
....
hmmm
what's the temperature at 250 hPa ?
-42 or -44 C ?
Maybe the problem starts from this
https://community.windy.com/topic/7963/upper-air-temperatures -
@Gkikas-LGPZ
Did you see other discrepancies at other levels between temperatures of the sounding and the map ? -
@Yves70
No.
Please read the following post to the end.
https://community.windy.com/topic/7963/upper-air-temperatures -
Correlation seems to be good at other levels :
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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…". -
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.
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Hi All,
windy-plugin-skewt now has a radiosonde feature. I'm still testing it, but please let me know any feedback :)
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@johnckealy
Wrong data for 250hPa (FL340).
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 -
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.
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Nice plugin !
It seems you have something wrong when calculating altitude related to pressure
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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?
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@johnckealy
500 hPa gph rarely observed higher than 6000m -
@johnckealy
John, 500hPa is about 5500m -
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.
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@johnckealy
https://www.math24.net/barometric-formula
Also see "example1"
