Detailed Weather Data for Project: HUDS

Date Time TAIR WSPD RELH SRAD 07Nov2017 8 a.m. 45.36 6.10 93.04 4.60 07Nov2017 9 a.m. 45.39 7.00 92.22 27.10 07Nov2017 10 a.m. 45.84 7.20 92.62 52.30 07Nov2017 11 a.m. 45.97 7.00 91.76 45.00 07Nov2017 12 p.m. 45.61 6.50 92.16 55.40 07Nov2017 1 p.m. 45.16 7.60 93.75 48.00 07Nov2017 2 p.m. 45.23 8.20 92.33 43.10 07Nov2017 3 p.m. 45.41 7.60 90.21 25.70 07Nov2017 4 p.m. 45.86 7.90 87.58 6.80 07Nov2017 5 p.m. 46.04 8.70 87.17 0.00 07Nov2017 6 p.m. 45.77 8.40 86.05 0.00 07Nov2017 7 p.m. 50.14 0.60 63.82 0.00 07Nov2017 8 p.m. 44.67 6.80 87.08 0.00 07Nov2017 9 p.m. 44.80 7.10 88.01 0.00 07Nov2017 10 p.m. 45.00 7.40 88.93 0.00 07Nov2017 11 p.m. 44.89 8.10 83.72 0.00 08Nov2017 12 a.m. 45.09 7.60 81.45 0.00 08Nov2017 1 a.m. 45.57 7.80 77.58 0.00 08Nov2017 2 a.m. 45.90 9.70 73.14 0.00 08Nov2017 3 a.m. 45.66 9.80 74.08 0.00 08Nov2017 4 a.m. 45.12 7.40 75.04 0.00 08Nov2017 5 a.m. 44.83 6.50 75.22 0.00 08Nov2017 6 a.m. 44.94 6.10 75.33 0.00 08Nov2017 7 a.m. 43.30 5.00 80.95 0.00 Accuml. Values 1091.55 172.10 2023.24 308.00 Num. Valid Values 24 24 24 24 Avg. Values 45.48 7.17 84.30 12.83 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 7.49 276.91 84.30 26.48 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1570 definition: xcompl = 1 - (RELH_avg/100) TdC = 5.0071 definition: TdC = TAIR_avg - ((14.55 + (0.114*TAIR_avg))*xcompl +pow((2.5 + 0.007*TAIR_avg)*xcompl, 3) + (15.9 +0.117*TAIR_avg)*pow(xcompl, 14)) del_lambda1 = 0.5182 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4818 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.7696 definition: Qn = 0.00714*SRAD_avg + 0.00000526*SRAD_avg*pow(TAIR_avg+17.8, 1.87) +0.00000394*pow(SRAD_avg, 2) - 0.00000000239*pow(SRAD_avg, 2)*pow(TAIR_avg-7.2, 2) - 1.02 es_ea = 1.6362 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.8863 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.020 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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