Detailed Weather Data for Project: BROK

Date Time TAIR WSPD RELH SRAD 03Dec2017 8 a.m. 52.30 0.81 94.01 34.00 03Dec2017 9 a.m. 55.60 0.54 85.59 189.00 03Dec2017 10 a.m. 61.41 2.51 73.37 225.00 03Dec2017 11 a.m. 65.70 3.20 63.42 404.00 03Dec2017 12 p.m. 67.78 3.60 57.26 283.00 03Dec2017 1 p.m. 70.43 3.30 55.55 368.00 03Dec2017 2 p.m. 71.55 3.89 50.00 191.00 03Dec2017 3 p.m. 73.08 3.65 48.29 203.00 03Dec2017 4 p.m. 72.86 3.38 47.62 117.00 03Dec2017 5 p.m. 69.89 1.56 54.46 21.00 03Dec2017 6 p.m. 67.14 1.13 59.22 0.00 03Dec2017 7 p.m. 64.17 2.93 99.07 0.00 03Dec2017 8 p.m. 65.05 2.68 61.54 0.00 03Dec2017 9 p.m. 65.16 3.76 57.63 0.00 03Dec2017 10 p.m. 64.51 3.28 59.40 0.00 03Dec2017 11 p.m. 62.51 2.70 63.55 0.00 04Dec2017 12 a.m. 60.10 2.45 68.98 0.00 04Dec2017 1 a.m. 59.77 2.52 70.21 0.00 04Dec2017 2 a.m. 58.68 2.96 73.75 0.00 04Dec2017 3 a.m. 58.35 2.50 76.25 0.00 04Dec2017 4 a.m. 58.78 3.57 80.16 0.00 04Dec2017 5 a.m. 58.33 3.14 82.47 0.00 04Dec2017 6 a.m. 58.44 2.38 87.72 0.00 04Dec2017 7 a.m. 59.34 2.46 91.03 0.00 Accuml. Values 1520.92 64.90 1660.55 2035.00 Num. Valid Values 24 24 24 24 Avg. Values 63.37 2.70 69.19 84.79 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 17.43 104.42 69.19 174.97 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3081 definition: xcompl = 1 - (RELH_avg/100) TdC = 11.8065 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 = 0.6558 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3442 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.0611 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 = 6.0606 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.5290 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.075 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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