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Wind Chill Calculator Requires JavaScript-compatible browser Wind chill temperature is a measure of the combined cooling effect of wind and temperature. As wind increases, heat is carried away from the body at a faster rate, driving down both the skin temperature which can cause frostbite and eventually the internal body temperature which can kill. The Wind Chill Temperature index is the measure of this relationship. This page can be used to compute the new Wind Chill Temperature index.
The reason for the change is to improve upon the previous index which was based on the Siple and Passel Index. Enter desired values for temperature and wind speed in the appropriate boxes, then press Compute.
History: The earliest wind chill index was based on the research of Antarctic explorers Siple and Passel who first measured the combined impacts of varying wind speed and freezing temperatures in They did this by measuring heat loss from water as it froze in a plastic container suspended from a tall pole. The new Wind Chill Temperature Index, by Randall Osczevski of DCIEM and Maurice Bluestein of Purdue University in Indiana, makes use of advances in science, technology and computer modelling to provide a more accurate, understandable and useful formula for estimating the dangers arising from winter winds and freezing temperatures.
In addition, clinical trials were conducted and the results of those trials has been used to verify and improve the accuracy of the new formula. Twelve volunteers six men and six women participated in the clinical trials. These consisted in four walks, at 4. Sensors were fixed to participants' forehead, cheeks, chin and nose, as well as to the inside of one cheek, to measure skin temperature and heat loss. The results from these trials were used to determine the various thresholds for frostbite, as seen on the new wind chill chart.
The Wind Chill Temperature Index has been implemented in Canada and the United States, resulting in a consistent index provided to help the public protect itself against the dangers of frostbite and hypothermia. Clinical Testing Process: The new wind chill temperature index was tested on human volunteers at the wind tunnel and climatic chamber of the Defense and Civil Institute of Environmental Medicine in Toronto, Canada.