@marekd @ivo

Sounds soooo exciting guys 😁

Ivo.... name a price, I’m happy to pay a subscription.

Your whole team deserve all the rewards - Windy is a global brand ..... congrats.

Hi @vicb ,

Your sounding has proven helpful in my aviation forecasting role.
Could I revisit the parcel trace and propose a modification that may improve this feature (if it can be coded into Windy).

You stated in another post that you add a sfc temp correction (+3-4degC) to the parcel starting point. Is this because you fly/live in a mountainous area at some elevation that the model incorrectly forecasts in terms of sfc temperature within Windy?

I have noticed incorrect sfc temp forecast for two of the airports that I forecast for that so happen to be located in mountainous areas. I have applied a rule here where I determine the air temp at a chosen elevation and then apply an adiabatic warming correction to account for the difference in the model surface elevation value and the actual airport location.

I can demonstrate this using Windy's internal sounding feature. I'll use Queenstown NZ, as this is one of my ports of interest.

I've selected the location at Queenstown Apt. Down at the bottom of the Sounding window are the reference heights. For the Airport, the EC model height is 2478ft.......whilst the actual height of the airfield is 1171ft.

That's a difference of 1307ft or ~400m. Taking the dry adiabatic lapse rate at 9.8C/1000m or 3C/1000ft, Queenstown Apt has approx a +4 degC temp correction to the meteogram temp values displayed by Windy.

My question/request.....Would this approach work for your Sounding Plugin????

If you can determine/calculate the height difference between the model surface height and the actual surface and apply this temp correction value to the parcel surface starting temp, I think you might have a more accurate parcel trace add on that could be applied to anywhere around the globe.

My next request......if this could be achieved (and shows promising results), could you apply the modified parcel trace for all forecast hours?

Happy to discuss (all of the above) :)

@marekd

Do you have an update or any news on how this feature is progressing along???

Regards

@dreemonster

see if this helps,

as per @idefix37 reply above.......there is a line below "undo" "load defaults" "save" buttons, with
import/export [view code]

click on [view code] and replace the displayed code with the following,

[[0,[197,199,0,256]],
[152.4390243902439,[197,199,0,256]],
[153.0,[81,81,81,255]],
[9146.341463414634,[81,81,81,255]],
[9147.341463414634,[128,128,128,255]]]

and then click "import" and "save".

If this fails, "load default" and try again.

Cheers

@johnckealy

what you have in place works fine (happy days!!!).....just need to go back to old school and picture that parcel ascent.

Cheers

@rittels

I have just noticed one issue with the Traj plugin....

when selecting the 100m level on the EC, the plugin gets set into a repetitive loop and the trace doesn't appear to be the correct path.

Sfc and all the other standard levels look fine.

@rittels

Your traj plugin is working a treat.

Just one comment - is there a means of removing the trajectory traces from the panel without needing to refresh the Windy window and then resetting the plugin programs? The window panel gets rather busy with multiple traces overlaid on top of each other. It would be nice to be able clear the trace plots with a click of a button and start a fresh.

Thx

@johnckealy

Thx John....I have been using your plugin today at work and utilised the Zoom function (worked well for analysing the boundary layer etc) and also how the mouse over the SkewT now represents the right hpa level (and T/Td/wind data).

Well done on being included into the development team. Windy has really taken a big leap forward all thanks to yours and the other guys development.

Much appreciated.

PS: If you are looking at any further additions to the SkewT plugin....is it possible to add a manually manipulated parcel trace (like the feature in your tephigram program)? That is, being able to slide the sfc temp point to give a projected parcel trace overlay on the forecast SkewT trace.

Again, well done. Thx

@vicb

Congrats on getting your sounding profile added to the Windy platform...

I was looking at your plugin this evening and noticed that the wind speed profile in the SkewT window does not match up with the speed shown in the picker.

I always select kts when looking at wind speeds. However, it appears that although the kts unit is displayed in the Skewt window, the wind speed values shown in the vertical profile look closer to values associated with km/hr.

The same goes for both EC and GFS model data.

Could you check this thanks. Do you need an image showing the discrepancy?

As an additional comment....did you intend to leave the wind speed scale non-linear in the zoomed option? I see you changed the wind speed profile to linear in the non-zoomed option [thanks for doing that!].

@rittels said in anybody working on a trajectory plugin?:

windy-plugin-traj@0.1.0

Fantastic!

Thx @rittels @ivo

Hands down....best weather app - and just getting better.