How about just using a look up table?
----- Original Message -----

> I wonder if any one has come across a quick and dirty way of
> calculating dew point.
>
>
> logEx = 0.66077+(7.5 * t_C) / (237.3 + t_C) + (log (RH) -2)
>
> DewPoint = (logEx - 0.66077) * 237.3 / (0.66077 + 7.5 - logEx)
>
> Where t_C = temperature in celsius
>              RH = true relative humidity
>
>
> Colin
>
>
>
>
> --
> cdb, cdb@barnard.name on 31/03/2002
>
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