Detailed Weather Data for Project: ARBU

Date Time TAIR WSPD RELH SRAD 07Nov2017 8 a.m. 44.37 10.85 88.75 21.00 07Nov2017 9 a.m. 45.23 10.51 85.50 84.00 07Nov2017 10 a.m. 46.34 10.89 81.67 109.33 07Nov2017 11 a.m. 47.54 9.32 79.33 154.67 07Nov2017 12 p.m. 48.38 9.67 77.50 128.75 07Nov2017 1 p.m. 48.50 10.44 77.00 144.00 07Nov2017 2 p.m. 48.11 11.52 79.00 86.25 07Nov2017 3 p.m. 47.16 12.86 81.00 114.50 07Nov2017 4 p.m. 47.07 13.42 79.00 64.25 07Nov2017 5 p.m. 46.28 12.08 81.00 23.00 07Nov2017 6 p.m. 44.78 13.87 84.00 0.00 07Nov2017 7 p.m. 44.60 10.29 84.00 0.00 07Nov2017 8 p.m. 44.33 12.08 83.00 0.00 07Nov2017 9 p.m. 43.82 12.90 85.00 0.00 07Nov2017 10 p.m. 43.97 9.84 81.50 0.00 07Nov2017 11 p.m. 44.46 11.97 75.25 0.00 08Nov2017 12 a.m. 44.60 11.02 73.00 0.00 08Nov2017 1 a.m. 44.33 9.67 76.50 0.00 08Nov2017 2 a.m. 43.92 9.28 80.50 0.00 08Nov2017 3 a.m. 43.16 10.29 83.00 0.00 08Nov2017 4 a.m. 42.26 12.64 88.00 0.00 08Nov2017 5 a.m. 42.17 9.39 86.50 0.00 08Nov2017 6 a.m. 41.49 8.16 88.00 0.00 08Nov2017 7 a.m. 41.00 8.61 89.00 1.00 Accuml. Values 1077.87 261.57 1967.00 930.75 Num. Valid Values 24 24 24 24 Avg. Values 44.91 10.90 81.96 38.78 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 7.17 420.87 81.96 80.03 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1804 definition: xcompl = 1 - (RELH_avg/100) TdC = 4.3029 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 = 0.5135 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4865 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.2506 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 = 1.8344 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.7980 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.049 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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