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.