Detailed Weather Data for Project: ARBU

Date Time TAIR WSPD RELH SRAD 06Nov2017 8 a.m. 52.20 8.05 87.50 16.75 06Nov2017 9 a.m. 52.40 6.41 90.33 49.00 06Nov2017 10 a.m. 52.52 6.65 95.25 90.25 06Nov2017 11 a.m. 52.04 7.01 95.00 139.67 06Nov2017 12 p.m. 52.47 7.49 89.75 143.50 06Nov2017 1 p.m. 52.94 7.83 86.33 129.67 06Nov2017 2 p.m. 52.88 6.21 85.25 148.75 06Nov2017 3 p.m. 53.24 5.31 83.25 89.00 06Nov2017 4 p.m. 53.28 5.65 83.25 66.25 06Nov2017 5 p.m. 52.97 5.87 83.00 28.25 06Nov2017 6 p.m. 51.98 6.26 85.00 0.00 06Nov2017 7 p.m. 51.26 6.26 84.00 0.00 06Nov2017 8 p.m. 51.26 3.80 84.00 0.00 06Nov2017 9 p.m. 50.99 6.93 84.50 0.00 06Nov2017 10 p.m. 50.06 9.10 86.00 0.00 06Nov2017 11 p.m. 49.01 8.78 84.00 0.00 07Nov2017 12 a.m. 47.88 9.12 83.25 0.00 07Nov2017 1 a.m. 45.81 9.06 86.00 0.00 07Nov2017 2 a.m. 45.18 8.00 86.50 0.00 07Nov2017 3 a.m. 45.08 7.83 86.00 0.00 07Nov2017 4 a.m. 44.60 8.95 86.75 0.00 07Nov2017 5 a.m. 44.33 10.96 88.50 0.00 07Nov2017 6 a.m. 44.15 10.79 89.00 0.00 07Nov2017 7 a.m. 44.33 11.41 89.00 1.00 Accuml. Values 1192.86 183.73 2081.41 902.09 Num. Valid Values 24 24 24 24 Avg. Values 49.70 7.66 86.73 37.59 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 9.83 295.62 86.73 77.56 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1327 definition: xcompl = 1 - (RELH_avg/100) TdC = 7.7148 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 = 0.5528 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4472 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.2402 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 = 1.6251 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.9582 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.029 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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