Patent ID: 7481576

Claim:
A method for determining wind chill temperature, T wc , comprising: calculating T wc = T f - { L ϕ C 1 [ ( 1.8062 ) ⁢ { ( 1 - WRF ) ⁢ V [ 1 - ( 6.92 × 10 - 6 ) ⁢ H ] 5.21 } 0.5 [ 0.5 ⁢ ( T f + T a ) ] 0.04 ⁢ D 0.5 + σ ⁢ ⁢ ɛ ⁡ ( T f + T a ) ⁢ ( T f 2 + T a 2 ) ⁢ ( T f - T a ) + w . ⁢ l e - α ⁢ ⁢ G - K ⁡ ( T CR - T f ) ⁢ ( T f - T a ) ] } 1 / ( 1 + ϕ ) wherein T f comprises facial temperature, L comprises human face length, φ comprises a function of heat source, C 1 comprises a function of the facial temperature and the ambient temperature, WRF comprises wind reduction factor, V comprises wind velocity at NWS 10m level, H comprises location altitude, T a comprises ambient temperature, D comprises head diameter, σ comprises Stefan-Boltzmann constant, ε comprises skin emissivity, {dot over (w)} comprises water evaporation flux rate, l e comprises latent heat of evaporation, α comprises thermal absorptivity, G comprises insolation value, K comprises thermal conductance and T CR comprises core temperature.