Detailed Weather Data for Project: ELDR

Date Time TAIR WSPD RELH SRAD 08Nov2017 8 a.m. 32.45 3.60 87.22 16.10 08Nov2017 9 a.m. 35.46 6.30 85.00 202.50 08Nov2017 10 a.m. 39.52 3.60 74.70 375.10 08Nov2017 11 a.m. 44.47 2.70 61.68 492.10 08Nov2017 12 p.m. 49.46 2.10 45.95 563.60 08Nov2017 1 p.m. 52.05 1.40 38.49 579.90 08Nov2017 2 p.m. 52.95 2.10 35.16 535.20 08Nov2017 3 p.m. 53.26 3.70 33.57 435.80 08Nov2017 4 p.m. 53.67 5.40 33.50 291.10 08Nov2017 5 p.m. 53.82 4.30 32.81 118.60 08Nov2017 6 p.m. 51.85 3.60 34.76 2.80 08Nov2017 7 p.m. 46.00 5.30 57.66 0.00 08Nov2017 8 p.m. 46.04 3.90 44.06 0.00 08Nov2017 9 p.m. 42.94 3.50 51.69 0.00 08Nov2017 10 p.m. 40.80 3.50 56.65 0.00 08Nov2017 11 p.m. 39.36 2.70 60.42 0.00 09Nov2017 12 a.m. 36.63 2.30 69.60 0.10 09Nov2017 1 a.m. 35.64 2.30 73.36 0.10 09Nov2017 2 a.m. 33.12 2.80 83.80 0.20 09Nov2017 3 a.m. 34.61 3.00 77.76 0.10 09Nov2017 4 a.m. 35.38 1.40 75.35 0.00 09Nov2017 5 a.m. 33.53 2.20 81.87 0.00 09Nov2017 6 a.m. 34.68 1.40 77.05 0.00 09Nov2017 7 a.m. 34.59 2.70 77.99 0.00 Accuml. Values 1012.30 75.80 1450.10 3613.30 Num. Valid Values 24 24 24 24 Avg. Values 42.18 3.16 60.42 150.55 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 5.65 121.96 60.42 310.67 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3958 definition: xcompl = 1 - (RELH_avg/100) TdC = -1.3745 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 = 0.4905 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5095 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.1744 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 = 3.6187 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.3993 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.090 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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