Detailed Weather Data for Project: SARD

Date Time TAIR WSPD RELH SRAD 08Nov2017 8 a.m. 47.03 8.40 88.85 3.40 08Nov2017 9 a.m. 46.94 12.30 83.64 64.70 08Nov2017 10 a.m. 47.23 7.10 81.63 52.90 08Nov2017 11 a.m. 47.55 8.20 80.77 43.20 08Nov2017 12 p.m. 47.12 8.60 86.85 21.60 08Nov2017 1 p.m. 46.71 8.60 85.96 28.50 08Nov2017 2 p.m. 46.80 10.00 83.08 62.70 08Nov2017 3 p.m. 47.52 11.10 79.85 95.40 08Nov2017 4 p.m. 48.36 7.10 77.99 32.40 08Nov2017 5 p.m. 48.79 6.70 75.93 7.50 08Nov2017 6 p.m. 48.94 5.40 74.46 0.00 08Nov2017 7 p.m. 53.56 2.50 64.82 0.00 08Nov2017 8 p.m. 46.11 2.00 83.10 0.00 08Nov2017 9 p.m. 42.76 3.00 90.94 0.00 08Nov2017 10 p.m. 41.85 3.10 95.04 0.00 08Nov2017 11 p.m. 42.42 2.50 96.09 0.00 09Nov2017 12 a.m. 42.51 3.40 96.19 0.00 09Nov2017 1 a.m. 43.74 2.70 94.91 0.00 09Nov2017 2 a.m. 43.43 2.60 95.01 0.00 09Nov2017 3 a.m. 42.37 2.70 93.86 0.00 09Nov2017 4 a.m. 39.24 3.30 96.92 0.00 09Nov2017 5 a.m. 39.49 3.70 98.64 0.00 09Nov2017 6 a.m. 39.51 4.10 99.25 0.00 09Nov2017 7 a.m. 40.12 3.20 99.30 0.00 Accuml. Values 1080.08 132.30 2103.08 412.30 Num. Valid Values 24 24 24 24 Avg. Values 45.00 5.51 87.63 17.18 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 7.22 212.87 87.63 35.45 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1237 definition: xcompl = 1 - (RELH_avg/100) TdC = 5.2908 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 = 0.5143 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4857 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.6851 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 = 1.2746 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.2842 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.011 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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