Campbell Scientific PC400 Datalogger Support Software User Manual
Page 84
Section 5. Split
This .PAR file produces a wind chill summary of the Mt. Logan Peak data set.
The formula for calculating wind chill is given as follows:
Te
=
33-(h/22.066)
where
Te = Wind Chill equivalent temperature, degrees C
h
=
((100V)
0.5
+ 10.45-V)(33-T)
where
h
=
Kcal
m
-2
hr
-1
wind chill index
v = wind speed in meters/second
T = temperature in degrees C
Note that at wind speeds between 0 to 4 mph (0 to 1.8 m/s), the wind chill
should be ignored because this formula results in wind chill temperatures that
are greater than the ambient temperature. The National Weather Service
includes wind chill in reports only when temperatures drop below 35
°F (1.7°
C).
1
The formula is for example purposes and is not endorsed by Campbell
Scientific as a standard.
When this .PAR file is executed, the following output is displayed on the
screen.
Wind Chill Report from Mt. Logan
Temp
deg C
Wind Speed
m/s
H
Wind Chill
deg C
Wind Chill
deg F
14.756 2.6172
438.06
13.148
55.666
14.156 3.6967
489.58
10.813
51.463
13.806 3.4643
491.34
10.733
51.319
13.639 3.3972
493.4
10.64
51.151
13.65 4.6533
529.57
9.0005
48.201
12.961 4.0185
530.58
8.9547
48.118
13.306 4.2554
528.27
9.0596
48.307
14.511 2.9448
456.04
12.333
54.199
15.439 2.4397
414.97
14.194
57.55
16.161 2.066
383.21
15.633
60.14
16.3 2.6489
402.08
14.778
58.601
15.894 3.0463
425.2
13.731
56.715
16.117 3.7325
439.59
13.078
55.541
16.072 4.8812
468.26
11.779
53.202
16.833 3.7682
421.85
13.882
56.988
17.639 3.9694
405.59
14.619
58.314
18.972 3.5626
361.39
16.622
61.92
19.628 3.0208
331.76
17.965
64.337
19.217 3.1648
345.62
17.337
63.207
18.067 3.9157
393.08
15.186
59.335
15.467 5.2791
493.51
10.635
51.142
13.439 6.9821
584.71
6.5016
43.703
13.044 7.6526
607.86
5.4526
41.815
12.9 5.3014
566.29
7.3368
45.206
Reference
1
“Wind Chill Errors”, Edwin Kessler, Bulletin of the American Meteorology
Society, Vol. 74, No. 9, September 1993, pp 1743-1744.
5-36