Detailed Weather Data for Project: HUGO

Date Time TAIR WSPD RELH SRAD 04Dec2017 8 a.m. 64.17 9.18 91.44 4.00 04Dec2017 9 a.m. 65.16 11.12 91.99 60.00 04Dec2017 10 a.m. 68.23 12.42 85.16 144.00 04Dec2017 11 a.m. 68.77 13.09 85.95 125.00 04Dec2017 12 p.m. 70.43 15.04 84.30 182.00 04Dec2017 1 p.m. 73.17 8.56 77.71 75.00 04Dec2017 2 p.m. 75.36 9.27 69.89 56.00 04Dec2017 3 p.m. 77.45 13.22 64.58 231.00 04Dec2017 4 p.m. 77.58 12.48 63.86 119.00 04Dec2017 5 p.m. 76.14 10.64 67.21 21.00 04Dec2017 6 p.m. 75.25 11.81 69.95 0.00 04Dec2017 7 p.m. 45.05 7.05 33.94 0.00 04Dec2017 8 p.m. 64.60 17.87 84.42 0.00 04Dec2017 9 p.m. 61.20 15.90 95.65 0.00 04Dec2017 10 p.m. 60.42 10.31 87.05 0.00 04Dec2017 11 p.m. 59.77 6.42 70.57 0.00 05Dec2017 12 a.m. 60.31 18.38 48.28 0.00 05Dec2017 1 a.m. 57.24 18.77 44.07 0.00 05Dec2017 2 a.m. 54.82 18.77 45.29 0.00 05Dec2017 3 a.m. 53.73 21.69 49.08 0.00 05Dec2017 4 a.m. 52.07 21.08 45.17 0.00 05Dec2017 5 a.m. 50.43 17.86 45.29 0.00 05Dec2017 6 a.m. 48.99 17.26 51.34 0.00 05Dec2017 7 a.m. 48.45 18.07 50.18 0.00 Accuml. Values 1508.79 336.26 1602.37 1017.00 Num. Valid Values 24 24 24 24 Avg. Values 62.87 14.01 66.77 42.38 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 17.15 541.04 66.77 87.44 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3323 definition: xcompl = 1 - (RELH_avg/100) TdC = 11.0024 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 = 0.6522 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3478 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.0134 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 = 6.4291 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 10.2285 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.140 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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