Detailed Weather Data for Project: ELDR

Date Time TAIR WSPD RELH SRAD 05Mar2018 8 a.m. 45.00 14.70 67.40 65.80 05Mar2018 9 a.m. 46.36 22.40 60.04 241.30 05Mar2018 10 a.m. 48.45 27.50 55.68 422.50 05Mar2018 11 a.m. 51.60 29.80 38.02 589.80 05Mar2018 12 p.m. 53.82 29.20 30.41 697.50 05Mar2018 1 p.m. 55.06 27.70 29.51 742.40 05Mar2018 2 p.m. 56.57 26.70 28.17 724.70 05Mar2018 3 p.m. 56.89 28.80 15.60 644.10 05Mar2018 4 p.m. 57.13 26.80 11.33 507.10 05Mar2018 5 p.m. 56.86 26.90 17.80 329.60 05Mar2018 6 p.m. 55.67 20.70 18.57 129.80 05Mar2018 7 p.m. 38.30 12.70 50.35 5.50 05Mar2018 8 p.m. 49.15 5.80 22.69 0.00 05Mar2018 9 p.m. 46.44 3.10 28.59 0.00 05Mar2018 10 p.m. 43.14 3.50 35.35 0.10 05Mar2018 11 p.m. 44.87 4.20 30.15 0.00 06Mar2018 12 a.m. 44.35 8.20 30.33 0.00 06Mar2018 1 a.m. 40.95 8.00 36.55 0.10 06Mar2018 2 a.m. 40.78 6.30 35.46 0.10 06Mar2018 3 a.m. 40.60 9.60 35.43 0.10 06Mar2018 4 a.m. 40.15 10.80 35.31 0.10 06Mar2018 5 a.m. 41.11 13.20 32.84 0.10 06Mar2018 6 a.m. 40.32 15.40 34.92 0.10 06Mar2018 7 a.m. 41.20 18.70 35.22 0.20 Accuml. Values 1134.77 400.70 815.72 5101.00 Num. Valid Values 24 24 24 24 Avg. Values 47.28 16.70 33.99 212.54 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 8.49 644.73 33.99 438.58 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.6601 definition: xcompl = 1 - (RELH_avg/100) TdC = -6.6267 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 = 0.5331 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4669 definition: del_lambda2 = 1 - del_lambda1 Qn = 3.9110 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 = 7.3969 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 13.3213 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.327 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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