True pressure

Post by **par** » Sat Jan 19, 2013 10:18 pm

Hi, Werner,

I have rolled back the feature after a report from a user om Prösen
YoWindow uses EDDC for Prösen
I have compared the weather reported by some German wetter service (probably wetter.com) and YoWindow and there was a significant difference.
After the rollback, the person said that now the pressure is just right.

But now it is obvious to me that the pressure reported by EDDC is on the sea level.
I think I need to make the feature available again.

Werner, thank you for directing me to the right way.

Post by **par** » Mon Jan 21, 2013 9:28 am

The feature is available again.
YoWindow displays the true pressure at the altitude of the place.

Mallorca · Post by **Mallorca** » Mon Jan 21, 2013 12:45 pm

Thank you

Werner

Bert.S · Post by **Bert.S** » Tue Feb 19, 2013 4:28 pm

Hi, I live on Madeira island. The pressure shown now is 3294 hPa. I have been teaching Physics for 35 years and I can assure no unit corresponds to such a value. Here we have now 1017 hPa. Maybe tomorrow?

Post by **ikarus1969** » Tue Feb 19, 2013 6:15 pm

Bert.S wrote:Hi, I live on Madeira island. The pressure shown now is 3294 hPa. I have been teaching Physics for 35 years and I can assure no unit corresponds to such a value. Here we have now 1017 hPa. Maybe tomorrow?

Which location of Madeira do you display in yowindow?
Porto Moniz for example, is displayed with 974 hPa currently.

edit: aaaah, it's Funchal which is displayed with 3294 hPa. investigating...

Post by **ikarus1969** » Tue Feb 19, 2013 6:20 pm

Funchal delivers 1016 hPa (see the Q-Qualifier), something must happen in YoWindow:

Mallorca · Post by **Mallorca** » Wed Feb 20, 2013 1:56 am

This crazy pressure is only to see on "live" and some hours later. If you go on the timebar to 9 clock or later, the pressure is OK

The level of Madeira airport is 59m above sea level, so the wrong pressure has nothing to do with the former discussion about Q or QNH!
Werner

Bert.S · Post by **Bert.S** » Fri Feb 22, 2013 8:57 pm

Hi, Pressure in Madeira still gives queer values like 3320 hPa. Moving the cursor to the right after a while (4 hours in the future) the right value appears. Who can solve this?

Mallorca · Post by **Mallorca** » Sat Feb 23, 2013 1:39 pm

Hi Bert, this is the same situation I described before. I have no idea about the solution, so we have to wait for an answer of Pasha.

Werner

Post by **par** » Tue Feb 26, 2013 9:48 pm

Fixed!

Sorry for the delay and thanks for letting us know about the problem.
It turned out that the altitude for Funchal was reported as -9999.
Because of this the pressure computation was made wrong.

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