Detailed Weather Data for Project: MCGE

Date Time TAIR WSPD RELH SRAD 07Nov2017 8 a.m. 46.71 8.95 88.00 16.25 07Nov2017 9 a.m. 46.82 9.92 88.00 48.33 07Nov2017 10 a.m. 47.57 11.52 85.25 91.50 07Nov2017 11 a.m. 49.22 11.26 81.33 185.00 07Nov2017 12 p.m. 50.27 11.58 79.00 223.25 07Nov2017 1 p.m. 51.20 12.30 77.00 219.33 07Nov2017 2 p.m. 50.90 14.54 78.00 143.50 07Nov2017 3 p.m. 49.55 15.04 79.25 48.50 07Nov2017 4 p.m. 48.33 13.37 81.50 42.75 07Nov2017 5 p.m. 47.84 12.47 81.25 16.50 07Nov2017 6 p.m. 46.94 12.30 82.00 0.00 07Nov2017 7 p.m. 46.22 12.53 84.00 0.00 07Nov2017 8 p.m. 45.86 13.09 84.50 0.00 07Nov2017 9 p.m. 45.56 12.53 85.67 0.00 07Nov2017 10 p.m. 45.72 11.24 86.25 0.00 07Nov2017 11 p.m. 45.86 9.90 86.75 0.00 08Nov2017 12 a.m. 45.77 13.09 86.00 0.00 08Nov2017 1 a.m. 45.05 10.79 87.00 0.00 08Nov2017 2 a.m. 44.64 10.23 87.75 0.00 08Nov2017 3 a.m. 44.72 9.25 87.00 0.00 08Nov2017 4 a.m. 44.64 9.39 87.50 0.00 08Nov2017 5 a.m. 44.06 9.28 92.50 0.00 08Nov2017 6 a.m. 43.47 9.06 94.75 0.00 08Nov2017 7 a.m. 43.16 7.16 95.00 0.50 Accuml. Values 1120.08 270.79 2045.25 1035.41 Num. Valid Values 24 24 24 24 Avg. Values 46.67 11.28 85.22 43.14 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 8.15 435.70 85.22 89.02 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1478 definition: xcompl = 1 - (RELH_avg/100) TdC = 5.8080 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 = 0.5281 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4719 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.1466 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 = 1.6130 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.5641 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.045 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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