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+--- Thread: Low pressure in cruise (/showthread.php?tid=57)
Low pressure in cruise - Julien - 2015-07-09
Hi,
First of all, thanks for releasing this free of charge - it's a great help to all the broke simmers out there.
I have noticed a strange issue where the pressure at cruise altitude is extremely low compared to the surrounding airports. Here is a recent weather check I did while flying from KPHX to KDEN:
--------------------------------------------------------------------------------------------------
23:58: ////////////// Nearest METAR //////////////
23:58: KRQE 082253Z AUTO 29014G20KT 10SM SCT095 25/08 A3010 RMK AO2 SLP082 T02500078 TSNO + true
aloft KRQE
23:58: KGUP 082324Z AUTO 24011KT 10SM FEW095 27/04 A3005 RMK AO2 LTG DSNT N T02720044 + true aloft
KGUP
23:58: KINW 082256Z AUTO 19017G26KT 10SM CLR 33/08 A2994 RMK AO2 PK WND 25033/2229 SLP058 T03330078 +
true aloft KINW
23:58: KFMN 082253Z VRB03KT 10SM SCT095 BKN120 23/08 A3003 RMK AO2 RAB12E42 SLP118 P0000 T02330083 +
true aloft KFMN
23:58: KBDG 082335Z AUTO 19014KT 10SM SCT100 25/06 A3012 RMK AO1 T02470062 + true aloft nearest KCEZ
23:58: KCEZ 082321Z AUTO 29016G24KT 10SM SCT075 BKN100 25/07 A3006 RMK AO2 LTG DSNT NE T02500067 +
true aloft KCEZ
23:58: ////////////// Nearest FSX weather //////////////
23:58: C64C: Interpolation: 15836 KRQE KINW KGUP
23:58: C64C: QNH inHg: 28.07
23:58: C64C: Temp: 27
23:58: C64C: Wind: 236/10 - Variance: 0 - Gusts: 10
---------------------------------------------------------------------------------------------------------
As you can see all the surrounding airports have above standard pressure, yet the engine is injecting an extremely low pressure. This only seems to happen at cruise altitude and have noticed it flying in Europe as well. Is this normal? I am using FSX Acceleration and Windows 7.
Regards,
Julien
Low pressure in cruise - fsxwx - 2015-07-09
Thanks for reporting.
I assume that there might be still a problem/bug with the processing of GFS/GRIB pressure data that could be far too low sometimes. That's why the station C64C (that is interpolated from station 15836 (which is pure GRIB data), KRQE, KINW and KGUP) has extremely low pressure.
This may be also the reason for this thread: Incorrect barometric pressure in S.Africa?
This problem is my number one priority at the moment, but unfortunately I couldn't spend much 'real' development time for FSXWX right now... :(
Low pressure in cruise - fsxwx - 2015-07-14
Should be solved. Solution is described in the thread mentioned above.
Low pressure in cruise - Julien - 2015-07-21
Hello again
I'm happy to report that the bug has indeed been fixed. I have done a few test flights and everything seemed good.
However in testing I have found another bug. When flying into SKBO the weather engine does not set the weather for the airport but rather an interpolation of various airports (with SKBO set as the destination). If I spawn there the weather engine works correctly and loads only the weather for SKBO. I'm guessing it's to do with the airport's high altitude? (8300 ft).
Other than that it's perfect so thanks again!