Detailed Weather Data for Project: HUGO

Date Time TAIR WSPD RELH SRAD 06Nov2017 8 a.m. 63.95 0.44 82.04 17.00 06Nov2017 9 a.m. 66.58 4.29 81.55 78.00 06Nov2017 10 a.m. 68.13 3.01 81.43 84.00 06Nov2017 11 a.m. 66.90 5.53 84.91 139.00 06Nov2017 12 p.m. 67.14 9.30 81.86 112.00 06Nov2017 1 p.m. 67.46 5.89 84.36 127.00 06Nov2017 2 p.m. 67.68 7.80 82.77 130.00 06Nov2017 3 p.m. 66.58 10.04 81.25 107.00 06Nov2017 4 p.m. 66.04 10.98 78.44 54.00 06Nov2017 5 p.m. 64.38 12.17 78.99 49.00 06Nov2017 6 p.m. 62.62 12.33 83.69 0.00 06Nov2017 7 p.m. 50.65 21.84 86.44 0.00 06Nov2017 8 p.m. 59.54 13.38 88.33 0.00 06Nov2017 9 p.m. 58.33 17.95 89.85 0.00 06Nov2017 10 p.m. 57.58 18.22 88.88 0.00 06Nov2017 11 p.m. 56.70 17.09 88.33 0.00 07Nov2017 12 a.m. 55.36 17.31 89.12 0.00 07Nov2017 1 a.m. 54.61 9.83 88.27 0.00 07Nov2017 2 a.m. 54.16 8.16 87.29 0.00 07Nov2017 3 a.m. 54.27 14.24 86.19 0.00 07Nov2017 4 a.m. 54.16 12.59 88.27 0.00 07Nov2017 5 a.m. 53.83 11.26 88.27 0.00 07Nov2017 6 a.m. 52.84 12.55 89.55 0.00 07Nov2017 7 a.m. 52.63 16.81 89.92 2.00 Accuml. Values 1442.10 273.01 2050.00 899.00 Num. Valid Values 24 24 24 24 Avg. Values 60.09 11.38 85.42 37.46 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 15.60 439.27 85.42 77.30 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1458 definition: xcompl = 1 - (RELH_avg/100) TdC = 13.1678 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 = 0.6325 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3675 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.1581 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 = 2.5846 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.9066 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.053 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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