Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Help with StrelokPro?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="new2mud" data-source="post: 2231710" data-attributes="member: 24831"><p>What you were looking for (and not finding) was a simple input field for elevation.</p><p></p><p>However, elevation/altitude data is a means to an end—ultimately the computer needs to know the "density altitude", which is a combination of the other metrics that ARE input fields (temp, humidity, station pressure).</p><p></p><p>As stated above, station pressure reduces with altitude—0.01" mercury loss per 10 ft elevation, which translates to -1.0 inHg for every 1,000 ASL. (Hence subtract 7.0 inHg at 7000' ASL vs. sea level)</p><p></p><p>One more caveat—most weather reports will report pressure as "barometric pressure" which incorporates an adjustment to enable comparisons to sea level readings. We are looking for "station pressure", which is a non-corrected number.</p></blockquote><p></p>
[QUOTE="new2mud, post: 2231710, member: 24831"] What you were looking for (and not finding) was a simple input field for elevation. However, elevation/altitude data is a means to an end—ultimately the computer needs to know the “density altitude”, which is a combination of the other metrics that ARE input fields (temp, humidity, station pressure). As stated above, station pressure reduces with altitude—0.01” mercury loss per 10 ft elevation, which translates to -1.0 inHg for every 1,000 ASL. (Hence subtract 7.0 inHg at 7000’ ASL vs. sea level) One more caveat—most weather reports will report pressure as “barometric pressure” which incorporates an adjustment to enable comparisons to sea level readings. We are looking for “station pressure”, which is a non-corrected number. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Help with StrelokPro?
Top