Detailed Weather Data for Project: WAUR

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 92.08 0.00 104.58 54.00 05Nov2017 9 a.m. 97.92 0.00 90.42 266.00 05Nov2017 10 a.m. 103.10 0.00 65.21 444.00 05Nov2017 11 a.m. 105.73 0.00 58.50 577.00 05Nov2017 12 p.m. 111.70 0.00 48.19 658.00 05Nov2017 1 p.m. 88.18 0.00 30.54 670.00 05Nov2017 2 p.m. 116.53 0.00 40.12 621.00 05Nov2017 3 p.m. 107.74 0.00 57.90 497.00 05Nov2017 4 p.m. 83.12 0.00 52.89 320.00 05Nov2017 5 p.m. 72.10 0.00 56.18 161.00 05Nov2017 6 p.m. 68.14 0.00 64.35 16.00 05Nov2017 7 p.m. 55.49 0.00 85.10 0.00 05Nov2017 8 p.m. 65.93 0.00 80.82 0.00 05Nov2017 9 p.m. 64.06 0.00 83.76 0.00 05Nov2017 10 p.m. 62.96 0.00 85.76 0.00 05Nov2017 11 p.m. 61.75 0.00 85.09 0.00 06Nov2017 12 a.m. 60.31 0.00 86.44 0.00 06Nov2017 1 a.m. 62.85 0.00 90.77 0.00 06Nov2017 2 a.m. 58.44 0.00 89.49 0.00 06Nov2017 3 a.m. 57.58 0.00 88.82 0.00 06Nov2017 4 a.m. 57.45 0.00 89.24 0.00 06Nov2017 5 a.m. 65.59 0.00 95.10 0.00 06Nov2017 6 a.m. 79.32 0.00 103.16 0.00 06Nov2017 7 a.m. 53.62 0.00 87.54 1.00 Accuml. Values 1851.71 0.00 1819.97 4285.00 Num. Valid Values 24 0 24 24 Avg. Values 77.15 75.83 178.54 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 25.09 0.00 75.83 368.42 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2417 definition: xcompl = 1 - (RELH_avg/100) TdC = 20.6079 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 = 0.7417 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.2583 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.2281 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 = 7.5569 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.4899 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.149 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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