Detailed Weather Data for Project: BROK

Date Time TAIR WSPD RELH SRAD 05Mar2018 8 a.m. 55.49 0.73 100.17 16.00 05Mar2018 9 a.m. 59.23 2.30 99.69 159.00 05Mar2018 10 a.m. 65.26 1.56 89.98 384.00 05Mar2018 11 a.m. 69.44 6.10 63.30 517.00 05Mar2018 12 p.m. 64.94 11.72 34.61 740.00 05Mar2018 1 p.m. 63.39 12.84 33.76 771.00 05Mar2018 2 p.m. 64.81 12.72 27.90 719.00 05Mar2018 3 p.m. 64.51 11.35 23.99 620.00 05Mar2018 4 p.m. 63.61 11.35 22.52 414.00 05Mar2018 5 p.m. 61.63 11.22 24.36 157.00 05Mar2018 6 p.m. 59.54 8.31 23.07 35.00 05Mar2018 7 p.m. 56.25 11.50 15.14 0.00 05Mar2018 8 p.m. 55.17 2.44 31.68 1.00 05Mar2018 9 p.m. 54.16 4.22 27.23 1.00 05Mar2018 10 p.m. 54.39 4.95 23.56 0.00 05Mar2018 11 p.m. 49.12 0.11 46.76 1.00 06Mar2018 12 a.m. 43.95 1.35 61.65 1.00 06Mar2018 1 a.m. 40.21 0.02 81.49 1.00 06Mar2018 2 a.m. 41.54 0.40 77.23 1.00 06Mar2018 3 a.m. 39.99 0.44 89.74 1.00 06Mar2018 4 a.m. 43.61 0.63 80.94 1.00 06Mar2018 5 a.m. 42.42 0.38 86.08 1.00 06Mar2018 6 a.m. 41.86 0.45 90.48 1.00 06Mar2018 7 a.m. 40.98 1.30 82.77 8.00 Accuml. Values 1295.51 118.39 1338.10 4550.00 Num. Valid Values 24 24 24 24 Avg. Values 53.98 4.93 55.75 189.58 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 12.21 190.49 55.75 391.21 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4425 definition: xcompl = 1 - (RELH_avg/100) TdC = 3.6599 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 = 0.5867 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4133 definition: del_lambda2 = 1 - del_lambda1 Qn = 3.5580 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 = 6.2902 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 4.9054 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.162 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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