露点

露點計算

$T_d = \frac {b\ \gamma(T,RH)} {a - \gamma(T,RH)}$

$\gamma(T,RH) = \frac {a\ T} {b+T} + \ln (RH/100)$

$a = 17.27$
$b = 237.7$

0℃ < $T$ < 60℃
1% < $RH$ < 100%
0℃ < $T_d$ < 50℃

簡易近似法

$T_d = T - \frac {(100 - RH)} {5}$

$RH = 100 - 5 (T - T_d)$

參考資料

1. ^ Burt, Christopher C. Extreme Weather: A Guide & Record Book. W. W. Norton & Company. 2004: 28. ISBN 0393326586.
2. ^ Digiquartz® Dew Point Calculation. [2008年7月6日] （英文）.
3. ^ M. G. Lawrence, "The relationship between relative humidity and the dew point temperature in moist air: A simple conversion and applications", Bull. Am. Meteorol. Soc., 86, 225-233, 2005