Appendix d. wind chill, D.1 wind chill, D.1.1 method – Campbell Scientific VisualWeather Software User Manual
Page 71: D.2 references
Appendix D. Wind Chill
D.1 Wind Chill
Wind chill is a degree of ‘coldness’ experienced by exposed human skin due to
increasing wind speeds at a given ambient temperature. Wind chill
temperature drops with increasing wind speeds at a constant air temperature or
with decreasing air temperatures at a constant wind speed. The wind chill
effect is more pronounced when the wind speed increases and air temperature
drops. Since the degree of coldness varies from person-to-person, the wind
chill may have different meaning to different individuals in the same
environment.
Wind chill temperatures are meaningful at wind speeds between 3 mph and 110
mph and temperatures between -50°F and 50°F. If either measurement is
outside of these boundaries, the wind chill will be reported as N/A.
D.1.1 Method
The wind chill equivalent temperature (°F) can be obtained by using the
following equation
[1]
:
Wind Chill (°F) = 35.74 + 0.6215T – 35.75 (V
0.16
) + 0.4275T (V
0.16
)
where, T = Air Temperature in °F and V = Wind Speed in mph.
VisualWeather calculates wind chill from the raw data of average values of
temperatures and wind speeds. Users need not enter any parameters to
calculate the wind chill.
D.2 References
1. Bulletin of the American Meteorological Society, pp. 1743-1744, Vol. 74,
No. 9, September 1993.
2. National
Weather
Service
Announcement, August 2001,
D-1