Re: Question about barometric pressure vs altitude
Alan, if you are using those pressure charts they are "standard" pressure charts and do not always reflex non standard pressures/temps that you might be experiencing. The most important factors as I "see" it are current barometric pressure (non corrected), and temp. Humidity plays a insignificant role but you can throw that in too, at least that is what we were taught back when I was flying when it came to density altitude and ballistics are all about air density.
Playing here with my shooter program, when absolute pressure is selected, as you mentioned, it does block out altitude. You still have temp and humidity that can be entered, when changing humidity there is no change in drops but when changing temp the drops will change. So if you use "pressure is absolute" don't forget to enter temp and current baro.
Last edited by RTK; 08-03-2013 at 08:56 PM..