Detailed Weather Data for Project: MCGE

Date Time TAIR WSPD RELH SRAD 08Nov2017 8 a.m. 43.07 8.28 94.75 19.00 08Nov2017 9 a.m. 43.70 5.44 93.67 32.67 08Nov2017 10 a.m. 44.24 5.65 94.00 40.75 08Nov2017 11 a.m. 44.24 6.86 95.67 43.33 08Nov2017 12 p.m. 44.15 9.39 95.00 44.50 08Nov2017 1 p.m. 44.66 9.25 93.67 63.67 08Nov2017 2 p.m. 45.50 5.37 90.75 58.75 08Nov2017 3 p.m. 46.94 7.27 87.50 116.00 08Nov2017 4 p.m. 47.34 6.04 83.25 49.25 08Nov2017 5 p.m. 46.94 4.87 84.25 14.25 08Nov2017 6 p.m. 46.04 3.13 91.00 0.00 08Nov2017 7 p.m. 45.32 2.68 94.00 0.00 08Nov2017 8 p.m. 45.86 1.90 91.50 0.00 08Nov2017 9 p.m. 46.28 1.94 90.67 0.00 08Nov2017 10 p.m. 46.46 3.28 89.67 0.00 08Nov2017 11 p.m. 45.68 3.58 84.00 0.00 09Nov2017 12 a.m. 45.41 3.36 85.75 0.00 09Nov2017 1 a.m. 45.18 1.40 88.00 0.00 09Nov2017 2 a.m. 45.18 1.17 89.75 0.00 09Nov2017 3 a.m. 45.14 1.71 90.00 0.00 09Nov2017 4 a.m. 44.91 2.40 91.25 0.00 09Nov2017 5 a.m. 44.33 3.47 89.50 0.00 09Nov2017 6 a.m. 43.79 2.07 90.00 0.00 09Nov2017 7 a.m. 42.17 2.46 92.50 4.50 Accuml. Values 1082.53 102.97 2170.10 486.67 Num. Valid Values 24 24 24 24 Avg. Values 45.11 4.29 90.42 20.28 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 7.28 165.68 90.42 41.84 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0958 definition: xcompl = 1 - (RELH_avg/100) TdC = 5.7929 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 = 0.5151 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4849 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.6233 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 = 0.9974 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.8984 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.005 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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