Detailed Weather Data for Project: MCGE

Date Time TAIR WSPD RELH SRAD 04Dec2017 8 a.m. 63.86 9.73 96.50 14.25 04Dec2017 9 a.m. 65.66 11.18 93.67 110.33 04Dec2017 10 a.m. 67.91 11.52 88.25 144.25 04Dec2017 11 a.m. 69.56 11.33 82.67 84.67 04Dec2017 12 p.m. 71.37 11.74 77.50 112.50 04Dec2017 1 p.m. 73.10 12.15 71.33 91.00 04Dec2017 2 p.m. 76.01 13.87 64.75 195.50 04Dec2017 3 p.m. 78.08 15.15 57.75 158.75 04Dec2017 4 p.m. 78.21 15.10 56.25 124.50 04Dec2017 5 p.m. 77.24 11.93 59.00 55.00 04Dec2017 6 p.m. 64.94 30.65 83.00 0.00 04Dec2017 7 p.m. 62.78 2.68 94.00 0.00 04Dec2017 8 p.m. 61.61 7.05 78.50 0.00 04Dec2017 9 p.m. 59.54 11.48 59.67 0.00 04Dec2017 10 p.m. 58.94 13.87 43.00 0.00 04Dec2017 11 p.m. 56.48 11.63 38.00 0.00 05Dec2017 12 a.m. 55.67 16.22 41.00 0.00 05Dec2017 1 a.m. 53.24 17.84 42.25 0.00 05Dec2017 2 a.m. 50.63 15.15 43.00 0.00 05Dec2017 3 a.m. 48.74 15.88 44.67 0.00 05Dec2017 4 a.m. 46.40 15.27 46.75 0.00 05Dec2017 5 a.m. 44.96 13.98 48.00 0.00 05Dec2017 6 a.m. 43.83 14.48 50.50 0.00 05Dec2017 7 a.m. 43.07 18.90 49.50 0.00 Accuml. Values 1471.83 328.78 1509.51 1090.75 Num. Valid Values 24 24 24 24 Avg. Values 61.33 13.70 62.90 45.45 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 16.29 529.01 62.90 93.78 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3710 definition: xcompl = 1 - (RELH_avg/100) TdC = 9.2922 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 = 0.6414 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3586 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.0449 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 = 6.8164 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 10.5798 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.151 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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