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Title: Wind-Chill Index: A Measure of Cold Severity In regions with severe winter weather, the wind-chill index is often used to describe the apparent severity of the cold. This index, W, is a subjective temperature that depends on the actual temperature, T, and the wind speed, v. So, W is a function of T and v, and we can write W = f(T, v). Table: Wind-chill index as a function of air temperature and wind speed Wind speed (km/h) 10 15 20 25 30 40 50 60 70 80 -2 ~3 -9 ~10 2 58 29 -12 12 ~13 -14 ~15 ~16 ~16 -17 10 13 -15 ~18 20 -21 -22 23 -23 24 -25 26 27 -29 30 30 31 20 24 -27 -29 30 32 33 34 35 36 -37 38 39 40 41 42 43 45 30 36 -39 41 43 44 48 49 50 51 -52 -35 -41 45 -48 49 -51 -52 -54 -56 -57 58 60 40 51 54 57 59 61 63 64 65 67 For instance, the table shows that if the temperature is -5Â°C and the wind speed is 50 km/h, then subjectively it would feel as cold as a temperature of about -15Â°C with no wind. So, f(-5, 50) = -15

          Title: Wind-Chill Index: A Measure of Cold Severity

In regions with severe winter weather, the wind-chill index is often used to describe the apparent severity of the cold. This index, W, is a subjective temperature that depends on the actual temperature, T, and the wind speed, v. So, W is a function of T and v, and we can write W = f(T, v).

Table: Wind-chill index as a function of air temperature and wind speed

Wind speed (km/h) 10 15 20 25 30 40 50 60 70 80
-2 ~3 -9 ~10
2 58 29 -12 12 ~13 -14 ~15 ~16 ~16 -17 10 13 -15 ~18 20 -21 -22 23 -23 24 -25 26 27 -29 30 30 31 20 24 -27 -29 30 32 33 34 35 36 -37 38 39 40 41 42 43 45 30 36 -39 41 43 44 48 49 50 51 -52 -35 -41 45 -48 49 -51 -52 -54 -56 -57 58 60 40 51 54 57 59 61 63 64 65 67

For instance, the table shows that if the temperature is -5Â°C and the wind speed is 50 km/h, then subjectively it would feel as cold as a temperature of about -15Â°C with no wind. So,

f(-5, 50) = -15

texample in regions with severe winter weather the wind chill index is often used to describe the pparent severity of the cold this index w is a subjective temperature that depends on the ac 37409

Added by Elizabeth M.

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