Detailed Weather Data for Project: MCGE

Date Time TAIR WSPD RELH SRAD 03Mar2018 8 a.m. 46.94 13.20 79.75 104.25 03Mar2018 9 a.m. 49.22 15.58 72.33 296.00 03Mar2018 10 a.m. 54.05 13.65 61.25 512.25 03Mar2018 11 a.m. 58.34 15.88 49.67 660.33 03Mar2018 12 p.m. 61.11 15.83 47.75 760.75 03Mar2018 1 p.m. 63.80 14.61 45.67 789.33 03Mar2018 2 p.m. 66.74 13.20 44.00 756.50 03Mar2018 3 p.m. 68.18 12.58 43.25 660.75 03Mar2018 4 p.m. 68.49 13.59 42.50 470.75 03Mar2018 5 p.m. 67.77 12.30 43.50 207.00 03Mar2018 6 p.m. 64.76 10.74 46.00 40.00 03Mar2018 7 p.m. 60.26 7.61 53.00 0.00 03Mar2018 8 p.m. 58.91 7.83 53.50 0.00 03Mar2018 9 p.m. 57.86 8.28 51.33 0.00 03Mar2018 10 p.m. 59.06 9.99 47.67 0.00 03Mar2018 11 p.m. 59.72 9.62 48.00 0.00 04Mar2018 12 a.m. 59.63 9.95 48.75 0.00 04Mar2018 1 a.m. 59.27 11.13 48.50 0.00 04Mar2018 2 a.m. 58.46 11.86 49.75 0.00 04Mar2018 3 a.m. 57.44 11.48 52.67 0.00 04Mar2018 4 a.m. 56.84 10.51 53.75 0.00 04Mar2018 5 a.m. 56.12 10.29 56.00 0.00 04Mar2018 6 a.m. 54.54 9.84 62.25 0.00 04Mar2018 7 a.m. 54.14 11.63 64.00 0.50 Accuml. Values 1421.65 281.18 1264.84 5258.41 Num. Valid Values 24 24 24 24 Avg. Values 59.24 11.72 52.70 219.10 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 15.13 452.42 52.70 452.12 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4730 definition: xcompl = 1 - (RELH_avg/100) TdC = 5.5600 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 = 0.6263 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3737 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.6202 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 = 8.1326 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 10.9536 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.275 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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