Barometric Pressure
Version 0.02
perl gus_barometric_pressure.pl
Obtains barometric from nearby airport via NOAA website then compensates for local elevation. Perodically updates and also keeps a file record.
Formula used for calculating corrected baro pressure BP = SLBP * (1 - [ 6.8753*10**-6 * A ])**5.2559
BP: Local Barometric Pressure (In. Hg) SLBP: Barometric Pressure Corrected to Sea Level (In. Hg) A: Altitude (Feet), Holland’s altitude is 640 feet above sea level
Altitude Compensation Equation Ref. American Society of Heating, Refrigeration and Air-Conditioning Engineers, Inc. 1997 ASHRAE Handbook - Fundamentals, Inch-Pound Edition
Perry, R.H.,
Green, D.W., and Maloney,
J.O. 1984.
Chapter 6. Psychrometrics.
Perry’s Chemical Engineers’ Handbook.
This script has Perl module dependencies one of which is not yet on CPAN. Download it from here.
http://starling.us/tet/gus_perl_modules/index.xml#Tk-EasyGUI
Gan Uesli Starling <gan@starling.us>
Copyright (c) 2007 Gan Uesli Starling..
All rights reserved.
This program is free software; you may redistribute and/or edit it under the same terms as Perl itself.
<td><span class="blue1">Holland, Tulip City Airport</span><br>Last Update on Feb 1, 1:53 pm EST<br><br></td></tr><tr>
<td><b>Barometer</b>:</td> <td align="right" nowrap>29.72" (1007.3 mb)</td>