Detailed Weather Data for Project: BROK

Date Time TAIR WSPD RELH SRAD 04Mar2018 8 a.m. 50.67 0.54 69.54 16.00 04Mar2018 9 a.m. 50.88 1.11 66.85 43.00 04Mar2018 10 a.m. 52.52 0.97 65.44 128.00 04Mar2018 11 a.m. 53.51 0.72 70.38 145.00 04Mar2018 12 p.m. 50.22 0.32 94.19 35.00 04Mar2018 1 p.m. 49.12 0.75 100.48 71.00 04Mar2018 2 p.m. 50.22 2.54 100.78 92.00 04Mar2018 3 p.m. 50.97 0.33 99.99 61.00 04Mar2018 4 p.m. 50.43 1.07 99.87 38.00 04Mar2018 5 p.m. 50.54 0.55 99.56 53.00 04Mar2018 6 p.m. 50.09 2.39 99.32 23.00 04Mar2018 7 p.m. 57.79 4.25 23.99 1.00 04Mar2018 8 p.m. 50.88 2.55 94.75 1.00 04Mar2018 9 p.m. 51.64 1.36 89.79 1.00 04Mar2018 10 p.m. 50.54 0.14 99.01 0.00 04Mar2018 11 p.m. 50.32 0.77 99.51 0.00 05Mar2018 12 a.m. 50.86 1.28 99.01 0.00 05Mar2018 1 a.m. 51.64 1.40 97.18 0.00 05Mar2018 2 a.m. 52.07 1.54 98.95 0.00 05Mar2018 3 a.m. 51.53 1.60 99.51 0.00 05Mar2018 4 a.m. 51.98 1.34 99.82 0.00 05Mar2018 5 a.m. 52.86 0.57 100.00 0.00 05Mar2018 6 a.m. 54.07 2.85 99.94 0.00 05Mar2018 7 a.m. 54.50 2.48 100.18 1.00 Accuml. Values 1239.85 33.42 2168.04 709.00 Num. Valid Values 24 24 24 24 Avg. Values 51.66 1.39 90.33 29.54 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 10.92 53.77 90.33 60.96 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0967 definition: xcompl = 1 - (RELH_avg/100) TdC = 9.3805 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 = 0.5685 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4315 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.3993 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 = 1.2816 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.7165 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.003 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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