-
70
-
5) Dew-point temperature
Entering method of the formula
DEW (
T
#
H
)
T: Temperature data channel, H: Relative humidity channel
The following formula is used for the dew-point temperature.
t: Temperature data
h: Relative humidity data
D: Dew-point temperature
1. K=t+273.15
2. In case of t
≥
0
W=EXP(-5800.2206/K+1.K×(-0.04K×(0.41764768E-4
-0.14452093E-7×K))+6.5459673×LOG(K))/1000
In case of T<0
W=EXP(-5674.5359/K+6.K×(-9.677843E-3+K×(0.62215701E-6
+K×(0.20747825E-8-9.484024E-13×K)))+4.1635019×LOG(K))/1000
3. S=W×h/100
4. P=S×1000
5. Y=LOG(P)
6. In case of P
≥
611.2
D=-77.199+Y×(13.198+Y×(-0.63772+0.071098×Y))
In case of P<611.2
D=-60.662+Y×(7.4624+Y×(0.20594+0.016321×Y))