Detailed Weather Data for Project: BROK

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 68.90 3.90 99.15 23.00 05Nov2017 9 a.m. 70.43 4.06 92.60 44.00 05Nov2017 10 a.m. 72.09 3.78 86.02 109.00 05Nov2017 11 a.m. 74.62 4.07 77.05 183.00 05Nov2017 12 p.m. 78.03 4.80 68.44 396.00 05Nov2017 1 p.m. 80.87 4.56 62.39 469.00 05Nov2017 2 p.m. 81.64 4.26 57.45 367.00 05Nov2017 3 p.m. 81.10 4.71 59.28 179.00 05Nov2017 4 p.m. 82.18 4.11 56.53 152.00 05Nov2017 5 p.m. 79.88 3.77 62.26 26.00 05Nov2017 6 p.m. 77.25 3.65 69.35 1.00 05Nov2017 7 p.m. 63.95 1.79 83.03 0.00 05Nov2017 8 p.m. 70.00 1.72 89.87 0.00 05Nov2017 9 p.m. 70.99 0.08 87.30 1.00 05Nov2017 10 p.m. 70.32 2.48 88.58 0.00 05Nov2017 11 p.m. 69.98 1.14 90.95 0.00 06Nov2017 12 a.m. 68.02 0.85 76.31 1.00 06Nov2017 1 a.m. 66.38 0.11 81.62 0.00 06Nov2017 2 a.m. 65.50 0.11 81.20 1.00 06Nov2017 3 a.m. 64.83 0.26 82.42 1.00 06Nov2017 4 a.m. 64.71 0.14 84.30 0.00 06Nov2017 5 a.m. 64.72 0.05 85.53 0.00 06Nov2017 6 a.m. 64.72 0.04 89.99 0.00 06Nov2017 7 a.m. 65.50 0.08 94.20 2.00 Accuml. Values 1716.62 54.52 1905.82 1955.00 Num. Valid Values 24 24 24 24 Avg. Values 71.53 2.27 79.41 81.46 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 21.96 87.72 79.41 168.09 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2059 definition: xcompl = 1 - (RELH_avg/100) TdC = 18.2842 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 = 0.7089 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.2911 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.1427 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 = 5.3566 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.9535 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.066 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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