Weather Calculations with heavy math


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  1. #2
    Join Date
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    Quote Originally Posted by Tobias View Post
    I am reading a temp sensor and want to calculate the saturation pressure of water vapor. Below is the formula.

    One question, how in the hell am I going to do this?

    =6.1078*(0.99999683+TempF*(-0.0090826951+TempF*(0.000078736169+TempF*(-0.00000061117958+TempF*(0.0000000043884187+TempF*(-0.000000000029883885+TempF*(2.1874425E-13+TempF*(-1.7892321E-15+TempF*(1.1112018E-17+TempF*(-3.0994571E-20))))))))))^-8
    This post calculates dew point: http://www.picbasic.co.uk/forum/show...8155#post58155
    Does that help, or am I way of base?

    There are also some simplified equations for water vapor here: http://www.conservationphysics.org/atmcalc/atmoclc2.pdf
    Last edited by ScaleRobotics; - 5th January 2011 at 05:38.
    http://www.scalerobotics.com

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