Detailed Weather Data for Project: MCGE

Date Time TAIR WSPD RELH SRAD 04Nov2017 8 a.m. 54.95 3.47 99.50 3.50 04Nov2017 9 a.m. 56.70 4.98 99.50 26.00 04Nov2017 10 a.m. 59.72 4.62 100.00 73.67 04Nov2017 11 a.m. 63.77 4.31 100.00 116.00 04Nov2017 12 p.m. 73.76 11.41 85.33 386.00 04Nov2017 1 p.m. 80.01 16.11 68.50 462.25 04Nov2017 2 p.m. 82.94 16.40 60.33 482.00 04Nov2017 3 p.m. 84.38 15.55 54.75 531.00 04Nov2017 4 p.m. 85.41 14.82 50.25 420.00 04Nov2017 5 p.m. 85.10 13.25 51.00 289.50 04Nov2017 6 p.m. 83.12 10.07 54.00 110.25 04Nov2017 7 p.m. 77.36 6.49 66.00 0.00 04Nov2017 8 p.m. 76.64 9.17 73.00 0.00 04Nov2017 9 p.m. 76.19 9.39 74.50 0.00 04Nov2017 10 p.m. 75.02 8.80 76.67 0.00 04Nov2017 11 p.m. 74.25 9.23 78.00 0.00 05Nov2017 12 a.m. 72.81 8.22 80.50 0.00 05Nov2017 1 a.m. 72.99 7.61 80.75 0.00 05Nov2017 2 a.m. 72.59 6.26 82.50 0.00 05Nov2017 3 a.m. 72.44 5.22 84.33 0.00 05Nov2017 4 a.m. 72.36 6.32 86.00 0.00 05Nov2017 5 a.m. 72.14 8.50 87.00 0.00 05Nov2017 6 a.m. 71.46 6.60 89.00 0.00 05Nov2017 7 a.m. 71.15 8.16 91.00 2.50 Accuml. Values 1767.26 214.96 1872.41 2902.67 Num. Valid Values 24 24 24 24 Avg. Values 73.64 8.96 78.02 120.94 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 23.13 345.87 78.02 249.57 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2198 definition: xcompl = 1 - (RELH_avg/100) TdC = 19.1525 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 = 0.7216 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.2784 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.3270 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 = 6.1286 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 7.0160 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.143 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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