Detailed Weather Data for Project: HUGO

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 73.72 11.43 86.07 32.00 05Nov2017 9 a.m. 75.25 11.97 82.41 148.00 05Nov2017 10 a.m. 76.59 10.75 78.68 197.00 05Nov2017 11 a.m. 79.56 12.06 72.04 302.00 05Nov2017 12 p.m. 83.39 10.43 62.02 482.00 05Nov2017 1 p.m. 84.72 12.11 58.55 485.00 05Nov2017 2 p.m. 85.82 12.58 53.11 473.00 05Nov2017 3 p.m. 87.35 10.75 50.91 389.00 05Nov2017 4 p.m. 87.24 9.60 47.92 264.00 05Nov2017 5 p.m. 84.83 5.77 56.35 72.00 05Nov2017 6 p.m. 81.09 6.93 68.00 1.00 05Nov2017 7 p.m. 60.31 15.25 87.23 0.00 05Nov2017 8 p.m. 77.90 7.49 63.48 0.00 05Nov2017 9 p.m. 69.66 14.31 67.76 0.00 05Nov2017 10 p.m. 67.35 16.04 74.04 0.00 05Nov2017 11 p.m. 64.94 17.27 77.22 0.00 06Nov2017 12 a.m. 63.07 15.18 78.56 0.00 06Nov2017 1 a.m. 61.65 14.02 81.44 0.00 06Nov2017 2 a.m. 61.30 9.16 81.92 0.00 06Nov2017 3 a.m. 61.20 7.43 82.65 0.00 06Nov2017 4 a.m. 59.00 0.75 84.24 0.00 06Nov2017 5 a.m. 59.32 0.96 86.68 0.00 06Nov2017 6 a.m. 60.42 3.81 84.91 0.00 06Nov2017 7 a.m. 61.75 1.42 83.81 1.00 Accuml. Values 1727.44 237.47 1750.00 2846.00 Num. Valid Values 24 24 24 24 Avg. Values 71.98 9.89 72.92 118.58 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 22.21 382.09 72.92 244.70 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2708 definition: xcompl = 1 - (RELH_avg/100) TdC = 17.2109 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 = 0.7117 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.2883 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.2063 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 = 7.1345 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 8.6119 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.160 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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