Chapter 14.1, Problem 28E

To determine

To calculate: The Summer Simmer Index S and the Apparent Temperature A for both the average daily maximum and the average daily minimum temperature. If the “feels like” temperature often reported in summer weather forecasts measures the combined effects of humidity and high temperatures. Two of the most common models used to determine this effect are the Summer Simmer Index (S) developed by John W. Pepi and the Apparent Temperature (A) developed by Robert Steadman. These models are given by $S=1.98T-1.09\left(1-H\right)\left(T-58\right)-56.9$ and $A=-42.38+2.049T+1014H-22.48TH-0.006838T^2-548.2H^2+0.1229T^{2}H+8.528T{H}^2-0.0199T^2{H}^2$ where T is the air temperature (in degrees Fahrenheit) and H is the relative humidity (expressed as a decimal). In Orlando, Florida, the average daily maximum temperature and humidity for August is given by Maximum: ${91.6}^{\circ }F\text{ with 60\% humidity}$ and the average daily minimum temperature and humidity for August is given by Minimum: ${73.4}^{\circ }F\text{ with 92\% humidity}$.