Detailed Weather Data for Project: ARBU

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 68.49 9.73 93.00 90.75 05Nov2017 9 a.m. 71.36 11.26 84.00 259.67 05Nov2017 10 a.m. 75.87 13.03 69.75 441.25 05Nov2017 11 a.m. 79.52 12.90 56.00 561.67 05Nov2017 12 p.m. 82.40 12.58 46.75 646.00 05Nov2017 1 p.m. 84.02 11.41 37.67 640.33 05Nov2017 2 p.m. 85.73 9.73 31.50 587.50 05Nov2017 3 p.m. 85.64 9.84 28.75 474.50 05Nov2017 4 p.m. 80.60 11.86 35.25 310.75 05Nov2017 5 p.m. 72.72 11.74 46.25 129.00 05Nov2017 6 p.m. 62.24 11.41 65.00 0.00 05Nov2017 7 p.m. 58.82 10.51 74.00 0.00 05Nov2017 8 p.m. 57.02 14.09 77.50 0.00 05Nov2017 9 p.m. 54.50 14.02 81.67 0.00 05Nov2017 10 p.m. 52.83 11.58 84.25 0.00 05Nov2017 11 p.m. 51.66 7.61 85.50 0.00 06Nov2017 12 a.m. 50.90 8.33 86.00 0.00 06Nov2017 1 a.m. 50.67 8.05 86.00 0.00 06Nov2017 2 a.m. 50.72 9.67 85.75 0.00 06Nov2017 3 a.m. 50.18 7.98 87.00 0.00 06Nov2017 4 a.m. 49.46 7.33 89.75 0.00 06Nov2017 5 a.m. 49.19 6.93 91.00 0.00 06Nov2017 6 a.m. 50.76 7.72 89.00 0.00 06Nov2017 7 a.m. 51.80 7.94 87.50 1.00 Accuml. Values 1527.10 247.25 1698.84 4142.42 Num. Valid Values 24 24 24 24 Avg. Values 63.63 10.30 70.78 172.60 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 17.57 397.83 70.78 356.17 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2922 definition: xcompl = 1 - (RELH_avg/100) TdC = 12.2857 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 = 0.6575 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3425 definition: del_lambda2 = 1 - del_lambda1 Qn = 3.4646 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 = 5.7964 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 7.3876 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.189 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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