(3) An approximate model of a thunderstorm, as suggested by Dr. Kenneth Hardy, Weather Radar Branch, Meteorology Laboratory, AFCRL, L.G. Hanscom Field, Rosemary Dyer, Research Physicist, and Dr. Arnold A. Barnes, Jr., Research Physicist, to be considered in formulating the atmospheric model for attenuation assessment. This model is represented by Figure 89. Table 24 presents the data derived from input (2) and indicates specific peak rainfall rates at each of the SSPS locations: SSPS S.W. (Desert Southwest) SSPS N.W. (Northwest) SSPS M.W. (Midwest) SSPS N.E. (Northeast) The geographic locations of a typical site in each geographical area are as described and the latitudes and longitudes are as shown in Reference 48. TABLE 24 RAINFALL RATES Peak Rainfall Rates (mm/min) from input Representative of (2) for three low probabilities of occurrence Station SSPS Ground Station 0.1% 0.5% 1.0% Flagstaff Arizona 0.26 (Jul) 0.04 (Jul) 0.03 (Oct) Phoenix^ Arizona SSPS SW 0.59 (Jul) 0.14 (Jul) 0.03 (Jul) Tucson, Arizona 0.51 (Jul) 0.11 (Jul) 0.04 (Oct) Walla Walla, Wash. 0.21 (Oct) 0.12 (Oct) 0.01 (Oct) Yakima, Wash. SSPS NW 0.15 * * Huntington, W. Va. SSPS MW 0.60 (Jul) 0.20 (Jul) 0.09 (Jul) Williamsport, Penn. SSPS NE 0.51 (Jul) 0.16 (Jul) 0.08 (Jul) * < 0.015 mm/min. SUMMARY ASSUMPTIONS TO BE EMPLOYED FOR FURTHER INVESTIGATION Name of 0.1% Probability 1% Probability Location mm/min mm/hr. mm/min mm/hr. SSPS sw 60 35. 0.033 2. SSPS NW .20 12. 0.033 2. SSPS MW 60 35. 0.033 2. SSPS NE 60 35. 0.033 2.
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