Detailed Weather Data for Project: ELDR

Date Time TAIR WSPD RELH SRAD 03Mar2018 8 a.m. 48.49 15.00 71.53 53.50 03Mar2018 9 a.m. 51.87 16.00 65.48 229.40 03Mar2018 10 a.m. 57.65 18.80 56.46 405.60 03Mar2018 11 a.m. 62.01 20.30 53.51 555.30 03Mar2018 12 p.m. 65.75 20.60 51.37 654.70 03Mar2018 1 p.m. 68.97 20.40 51.14 695.20 03Mar2018 2 p.m. 71.10 19.60 49.36 679.90 03Mar2018 3 p.m. 71.80 21.20 48.94 594.10 03Mar2018 4 p.m. 71.74 19.60 48.98 360.40 03Mar2018 5 p.m. 70.09 19.50 50.50 157.80 03Mar2018 6 p.m. 68.56 19.50 50.62 63.30 03Mar2018 7 p.m. 59.11 18.60 74.63 0.00 03Mar2018 8 p.m. 62.83 15.60 55.82 0.00 03Mar2018 9 p.m. 60.76 14.90 58.41 0.00 03Mar2018 10 p.m. 58.86 12.30 60.98 0.00 03Mar2018 11 p.m. 57.85 13.90 61.27 0.00 04Mar2018 12 a.m. 56.46 12.30 63.67 0.00 04Mar2018 1 a.m. 55.44 12.50 65.57 0.00 04Mar2018 2 a.m. 54.46 11.50 66.81 0.00 04Mar2018 3 a.m. 53.19 10.60 68.28 0.00 04Mar2018 4 a.m. 52.43 11.10 69.63 0.00 04Mar2018 5 a.m. 52.48 10.60 68.87 0.00 04Mar2018 6 a.m. 52.12 10.40 68.52 0.00 04Mar2018 7 a.m. 52.11 10.60 67.34 0.00 Accuml. Values 1436.12 375.40 1447.69 4449.20 Num. Valid Values 24 24 24 24 Avg. Values 59.84 15.64 60.32 185.38 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 15.47 604.02 60.32 382.54 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3968 definition: xcompl = 1 - (RELH_avg/100) TdC = 7.8843 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 = 0.6307 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3693 definition: del_lambda2 = 1 - del_lambda1 Qn = 3.6759 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 = 6.9304 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 11.9305 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.265 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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