Detailed Weather Data for Project: WDMA

Date Time TAIR WSPD RELH SRAD 06Nov2017 8 a.m. 57.85 4.40 83.98 2.20 06Nov2017 9 a.m. 58.91 3.40 81.50 15.60 06Nov2017 10 a.m. 59.74 4.10 78.53 43.20 06Nov2017 11 a.m. 60.60 3.90 77.90 52.00 06Nov2017 12 p.m. 59.04 3.00 89.66 60.30 06Nov2017 1 p.m. 58.80 3.00 93.62 57.40 06Nov2017 2 p.m. 58.91 2.40 94.94 50.50 06Nov2017 3 p.m. 58.78 2.80 95.51 33.70 06Nov2017 4 p.m. 58.86 2.40 96.08 12.50 06Nov2017 5 p.m. 58.75 3.40 96.62 0.00 06Nov2017 6 p.m. 58.64 1.10 96.92 0.00 06Nov2017 7 p.m. 51.30 6.20 88.69 0.00 06Nov2017 8 p.m. 53.64 4.10 97.29 0.00 06Nov2017 9 p.m. 52.65 4.30 97.48 0.00 06Nov2017 10 p.m. 51.12 4.90 97.54 0.00 06Nov2017 11 p.m. 49.55 4.90 97.55 0.00 07Nov2017 12 a.m. 48.85 4.50 97.43 0.00 07Nov2017 1 a.m. 48.36 4.30 97.12 0.00 07Nov2017 2 a.m. 48.61 3.40 96.23 0.00 07Nov2017 3 a.m. 48.67 2.70 95.77 0.00 07Nov2017 4 a.m. 48.56 3.00 95.22 0.00 07Nov2017 5 a.m. 48.61 3.60 94.42 0.00 07Nov2017 6 a.m. 48.63 3.30 94.40 0.00 07Nov2017 7 a.m. 48.88 3.40 94.23 0.00 Accuml. Values 1296.30 86.50 2228.63 327.40 Num. Valid Values 24 24 24 24 Avg. Values 54.01 3.60 92.86 13.64 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 12.23 139.18 92.86 28.15 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0714 definition: xcompl = 1 - (RELH_avg/100) TdC = 11.0844 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 = 0.5869 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4131 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.7301 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 = 1.0384 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.8514 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.000 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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