EDIT: Forget about this… i found the solution here:
(This post can be deleted)
I am trying to convert absolute pressure values to atmospheric pressure.
I found this on the net, but can’t get it to accurately compute… I might not be understanding how to implement the equation in the program…
here’s the equation:
My question is : What to do with the 5.25?? Should it be multiplied?
this is how I am computing it:
P = (P0× (1−(h / 44330.77)))
Then convert from Pascals to inH:
AP = (P÷100)×0.02953
With inputs of:
h = 448
p0 = 100900
I should get: 29.78 Atmospheric Pressure
I am getting: 29.47 Which is close. But not close enough.
I am inputing values from my local airport reports… So I know the WUnderground conversions are correct… So it’s an issue on my part. If I multiple the (5.25) outside the brackets I get values WAY off… So… Any help would be welcomed!