NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Lunars barometric pressure correction
From: Bill B
Date: 2005 Apr 20, 16:58 -0500
From: Bill B
Date: 2005 Apr 20, 16:58 -0500
Frank wrote: > Yes, if you're at an unusually high altitude above sea level, then you > should multiply typical "weather report" barometric pressures by > exp(-altitude/34,000 feet) [roughly] Frank That's a nice formula. If I recall the thread, drop in barometric pressure with increase in altitude is not linear. Purdue's Dr. Carney gave me the rule of thumb (for low elevation) of 1" per 1000 feet, or local pressure = reported (corrected to sea level) pressure - (.0011 * elevation in feet). Which is linear. Big difference between the two formulas when the elevation gets into miles. Thanks Bill
