Detailed Weather Data for Project: HUGO

Date Time TAIR WSPD RELH SRAD 04Mar2018 8 a.m. 54.88 9.00 63.95 13.10 04Mar2018 9 a.m. 54.21 9.20 71.15 28.10 04Mar2018 10 a.m. 53.58 8.80 80.66 44.20 04Mar2018 11 a.m. 54.19 10.30 75.27 37.90 04Mar2018 12 p.m. 52.52 9.80 94.07 23.00 04Mar2018 1 p.m. 52.45 9.60 100.06 79.00 04Mar2018 2 p.m. 53.71 13.20 98.90 210.80 04Mar2018 3 p.m. 55.29 13.20 93.07 206.80 04Mar2018 4 p.m. 55.81 11.20 88.71 102.10 04Mar2018 5 p.m. 56.01 13.90 85.85 81.00 04Mar2018 6 p.m. 55.85 15.00 89.32 67.60 04Mar2018 7 p.m. 57.49 10.20 57.10 0.40 04Mar2018 8 p.m. 55.40 12.80 92.47 0.00 04Mar2018 9 p.m. 56.46 7.80 87.76 0.00 04Mar2018 10 p.m. 56.21 6.00 87.97 0.00 04Mar2018 11 p.m. 55.92 8.50 87.90 0.00 05Mar2018 12 a.m. 56.03 9.10 87.31 0.00 05Mar2018 1 a.m. 56.52 8.00 84.75 0.00 05Mar2018 2 a.m. 57.31 8.90 81.35 0.00 05Mar2018 3 a.m. 57.33 8.20 84.19 0.00 05Mar2018 4 a.m. 57.79 8.60 87.51 0.00 05Mar2018 5 a.m. 58.14 7.70 90.47 0.00 05Mar2018 6 a.m. 58.46 8.80 94.03 0.00 05Mar2018 7 a.m. 59.50 5.30 96.76 0.00 Accuml. Values 1341.07 233.10 2060.58 894.00 Num. Valid Values 24 24 24 24 Avg. Values 55.88 9.71 85.86 37.25 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 13.27 375.06 85.86 76.87 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1414 definition: xcompl = 1 - (RELH_avg/100) TdC = 10.9445 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 = 0.6013 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3987 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.1988 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 = 2.1614 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.9708 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.042 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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