Detailed Weather Data for Project: BIGH

Date Time TAIR WSPD RELH SRAD 06Nov2017 8 a.m. 37.63 13.90 81.21 4.30 06Nov2017 9 a.m. 37.11 12.30 81.50 43.90 06Nov2017 10 a.m. 36.73 10.40 82.53 90.80 06Nov2017 11 a.m. 36.12 8.50 84.49 132.30 06Nov2017 12 p.m. 36.91 10.10 83.56 113.90 06Nov2017 1 p.m. 37.36 11.70 83.15 145.20 06Nov2017 2 p.m. 37.87 6.80 82.89 97.00 06Nov2017 3 p.m. 37.45 6.00 87.48 67.20 06Nov2017 4 p.m. 37.33 3.80 94.52 24.60 06Nov2017 5 p.m. 37.54 4.00 97.59 0.30 06Nov2017 6 p.m. 37.35 3.30 97.81 0.00 06Nov2017 7 p.m. 40.69 4.00 68.22 0.00 06Nov2017 8 p.m. 37.87 8.20 95.90 0.00 06Nov2017 9 p.m. 38.10 7.00 95.82 0.00 06Nov2017 10 p.m. 38.01 6.80 95.55 0.00 06Nov2017 11 p.m. 38.05 4.60 96.86 0.00 07Nov2017 12 a.m. 38.08 4.00 97.47 0.00 07Nov2017 1 a.m. 38.32 3.10 97.19 0.00 07Nov2017 2 a.m. 38.34 6.10 97.46 0.00 07Nov2017 3 a.m. 38.07 4.00 98.08 0.00 07Nov2017 4 a.m. 37.71 3.80 97.42 0.00 07Nov2017 5 a.m. 37.72 3.80 96.21 0.00 07Nov2017 6 a.m. 37.67 4.10 96.35 0.00 07Nov2017 7 a.m. 37.69 4.40 96.12 0.00 Accuml. Values 905.74 154.70 2185.38 719.50 Num. Valid Values 24 24 24 24 Avg. Values 37.74 6.45 91.06 29.98 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 3.19 248.91 91.06 61.86 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0894 definition: xcompl = 1 - (RELH_avg/100) TdC = 1.8432 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 = 0.4527 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5473 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.4669 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 = 0.7042 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.8387 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.010 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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