Barometer Reading on Airplane

Hello.

I was recently on vacation where I boarded a total of four planes.  I've made this trip before with various triple sensor G-Shock watches, and all of those showed a large drop in barometric pressure as the plane took off to cruising altitude, and then a rise on its way back down to land.  This time I used an Instinct 2 Solar with the 15.08 system software and I had the pressure reading go up as we were climbing/cruising rather than going down.  I believe at one point it went up to 1032 hpa on an 11 hour flight on an Airbus A330/A350 at cruising altitude.  I'm going off of memory here, and I may be wrong on the specifics, but it for sure never went below the high-900s.

It was originally set to "Auto".  I tried changing the barometer settings from "Auto" to "Barometer Only" as well as "Altimeter Only" and none seemed to help the issue. 

The barometer seems to work well when on land.  It works well, as far as I know, everywhere other than on a plane.  This may seem like a pedantic post, but on the smaller planes used for the connecting flights, which don't have information screens in front of the seat, I used to use the barometer reading on the G-Shock watches to let me know if the plane was ascending, cruising, or descending, and as a reasonably accurate tool to let me know how close to landing we were on the planes without a screen in front of you. 

I'd just like to know if the barometer of my Instinct 2 Solar is working.  It seems to be reading the opposite of what I'm used to here.  Unfortunately, I don't remember if I checked to the Altimeter reading on the planes as we were flying.  Are there any settings that can be set differently that may have an effect on barometer readings on planes.

  • IIRC, for comfort most modern Airbus are pressurised to an equivalent air pressure of 6000ft altitude and are held at this pressure across most altitudes, unlike most other aircraft (especially smaller, short-haul ones) where the cabin pressure is usually lower and more variable with altitude. So what you're seeing might be more related to the aircraft than your watch?

  • I appreciate the reply.

    But I've flown on A330 and A350 planes with triple-sensor G-Shock watches and they usually get to high-700s or low-800s.  I've taken these same flights for vacation every year since 2011.

    It seems like a bad reading if my Instinct 2 is reading high-900s or more.  I love the watch.  It is my first smartwatch and I'm wearing it now, but something seems off here, and I want to know if there is some setting that can be changed to get an accurate reading, or if I need to contact support.

  • But I've flown on A330 and A350 planes with triple-sensor G-Shock watches and they usually get to high-700s or low-800s.

    What reference data did you have to be sure that the G-Shock’s were correct?

  • But I've flown on A330 and A350 planes with triple-sensor G-Shock watches and they usually get to high-700s or low-800s.

    800 hPa should about right for an Airbus A350 at cruising altitude, but if you last calibrated the watch at certain altitude, then Instinct 2 will show a higher value, since it does not show the ambient pressure, but rather the MSLP equivalent.

    That told, I would report it to the Suport anyway. Or even better, sign for the beta program, and report it on the Beta Program forum. It has a higher chance to reach the developers, there.

  • it does not show the ambient pressure

    There is an IQ widget that displays the ambient pressure. 

    https://apps.garmin.com/de-DE/apps/00678298-6672-4228-9c82-c9aa00e43df0 

  • Thank you for the replies, to everyone. 

    I will contact support and I will download an app with ambient pressure, as this seems to be an easy "fix" here.  I will update this thread when I get more information.  Apparently, I have some reading up to do on the way that the pressure sensor works on Garmin smartwatches.  

    Again, thank you to those who responded here.