Detailed Weather Data for Project: HUGO

Date Time TAIR WSPD RELH SRAD 05Dec2017 8 a.m. 47.57 20.72 50.30 11.00 05Dec2017 9 a.m. 47.03 18.30 50.79 124.00 05Dec2017 10 a.m. 47.03 21.60 46.76 201.00 05Dec2017 11 a.m. 47.14 17.91 42.37 141.00 05Dec2017 12 p.m. 47.25 16.53 39.43 196.00 05Dec2017 1 p.m. 48.02 19.38 45.23 238.00 05Dec2017 2 p.m. 47.35 19.24 41.02 146.00 05Dec2017 3 p.m. 47.46 12.83 30.46 191.00 05Dec2017 4 p.m. 47.35 12.41 31.80 122.00 05Dec2017 5 p.m. 46.69 9.51 33.15 22.00 05Dec2017 6 p.m. 45.81 6.86 34.31 0.00 05Dec2017 7 p.m. 50.43 2.90 38.40 0.00 05Dec2017 8 p.m. 44.51 7.20 35.47 0.00 05Dec2017 9 p.m. 44.94 8.62 38.40 0.00 05Dec2017 10 p.m. 43.95 8.26 40.17 0.00 05Dec2017 11 p.m. 44.71 10.65 40.84 0.00 06Dec2017 12 a.m. 45.27 8.60 45.60 0.00 06Dec2017 1 a.m. 42.96 8.70 43.46 0.00 06Dec2017 2 a.m. 42.19 6.20 46.09 0.00 06Dec2017 3 a.m. 42.19 3.25 41.33 0.00 06Dec2017 4 a.m. 41.09 0.69 54.82 0.00 06Dec2017 5 a.m. 40.87 2.29 52.62 0.00 06Dec2017 6 a.m. 40.87 6.54 57.01 0.00 06Dec2017 7 a.m. 41.76 6.47 53.66 0.00 Accuml. Values 1084.44 255.66 1033.49 1392.00 Num. Valid Values 24 24 24 24 Avg. Values 45.19 10.65 43.06 58.00 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 7.33 411.36 43.06 119.68 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5694 definition: xcompl = 1 - (RELH_avg/100) TdC = -4.5066 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 = 0.5158 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4842 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.1523 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 = 5.8921 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 7.6816 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.150 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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