Incorrect sounding
-
Hi there! There is a huge difference between wednesday 22 may
GFS sounding foreast for Sopot, BG displayed here and on the NOAA website. -
Hi @Ivan-Mateev, are the results from the same run? I can't see that from Your screenshot from ready.noaa.gov. When I try to get sounding from current run (
2024-05-20T06:00:00Z):
I get pretty much the same results. Although the one from ready.noaa.gov is smoother as it uses more levels:
-
@Filip_K
Hi Filip. My results were from the same run, but on NOAA website I'm using the first sounding option.
GFS Model (1 degree, 0-240h, 3 hrly, Global pressure)Now I know what is causing the difference
-
Now it's much closer, but still differrent. Especially the dew point line near the surface
-
And also the sounding in the bulgarian version of Windy is translated as звук, but the correct word is сондаж.
Best regards and thank you for the reply!
-
@Ivan-Mateev said in Incorrect sounding:
сондаж
Есть такое слово? Зондаж же или лучше зондирование, наверное)
-
@Ivan-Mateev said in Incorrect sounding:
Hi Filip. My results were from the same run, but on NOAA website I'm using the first sounding option.
GFS Model (1 degree, 0-240h, 3 hrly, Global pressure)Now I know what is causing the difference
Great to know we were able to pinpoint the reason. 1 degree model has very coarse grid (around 100km), I wouldn't recommend it much.
Now it's much closer, but still differrent. Especially the dew point line near the surface
The reason might be that we're adding dewpoint and temperature at 2m (almost surface). This is part of the sounding text output from NOAA:
hysplit.t00z.gfs0p25f Lat/Lon: 42.69 24.75 E = Estimated Surface Height ========Mean Sea Level Pressure===== FHR: 0. MSLP 1013. ========Temperature Deg C===== Hmsl/FHR: 0. Mdl sfc 9.7 857.E 10.8 904. 11.3 945. 11.8 ... 27781. -46.9 28770. -46.6 29827. -43.8 ========Relative Humidity======== Hmsl/FHR: 0. 857.E 77.5 904. 73.4 945. 70.4 1005. 70.0 ...So it seems to me like they are not using dewpoint (or relative humidity), but they are using temperature.
And also the sounding in the bulgarian version of Windy is translated as звук, but the correct word is сондаж.
I'll pass this to my colleague who takes care of translations. Thank you for letting us know
-
@cloudy_ @Ivan-Mateev We are open to change in the translation, however, I would like to get certain agreement on translation to Bulgarian. Without that, I will keep the current translation.
-
The fun thing is that @cloudy_ is writing in russian and is also trying to translate it in russian, which seems correct. The russian term is Атмосферное зондирование.
But the right term in bulgarian is аерологичен сондаж, атмосферен сондаж or simply сондаж. The word звук which now stands for sounding on the site is meaning sound in both russian and bulgarian.
Here is a material about the soundings written by the National hydrological and meteorological institute in Bulgaria:
https://www.facebook.com/100063632588828/posts/828827560617499/ -
Great to know we were able to pinpoint the reason. 1 degree model has very coarse grid (around 100km), I wouldn't recommend it much.
Only in this mode there is visualisation of the predicted superadiabatic layer on ground level. And it is quite accurate, especially in low wind situations and also in western Bulgaria in general.
-
@Ivan-Mateev Hi, thank you for your feedback. According to your posts and discussion with colleagues, we already made some changes in translation. It will be available in the next release.
-
Today I checked the forecast for tomorrow and again there is difference in the GFS soundings in NOAA and Windy for the same place and time. The displayed soundings are from the run at 00:00Z
-
@Ivan-Mateev
The first sounding diagram takes into account more layers.
