Detailed Weather Data for Project: BIGH

Date Time TAIR WSPD RELH SRAD 04Nov2017 8 a.m. 45.61 2.40 97.71 0.00 04Nov2017 9 a.m. 45.37 4.60 96.79 10.00 04Nov2017 10 a.m. 45.68 2.10 97.05 61.10 04Nov2017 11 a.m. 47.23 3.80 94.82 148.10 04Nov2017 12 p.m. 48.90 2.70 92.73 85.50 04Nov2017 1 p.m. 49.68 0.80 93.58 99.30 04Nov2017 2 p.m. 50.02 2.30 98.14 170.20 04Nov2017 3 p.m. 51.69 1.30 97.60 153.50 04Nov2017 4 p.m. 53.92 2.50 88.43 78.70 04Nov2017 5 p.m. 54.63 3.20 82.80 56.20 04Nov2017 6 p.m. 54.41 2.70 83.14 10.00 04Nov2017 7 p.m. 53.51 0.90 86.21 0.00 04Nov2017 8 p.m. 50.02 3.30 69.39 0.00 04Nov2017 9 p.m. 51.57 2.20 94.98 0.00 04Nov2017 10 p.m. 51.21 1.80 94.49 0.00 04Nov2017 11 p.m. 50.59 2.40 96.75 0.00 05Nov2017 12 a.m. 51.04 2.90 99.37 0.00 05Nov2017 1 a.m. 51.73 3.10 99.47 0.00 05Nov2017 2 a.m. 53.96 2.40 99.68 0.00 05Nov2017 3 a.m. 56.66 5.90 99.89 0.00 05Nov2017 4 a.m. 57.24 6.20 100.00 0.00 05Nov2017 5 a.m. 59.67 4.10 100.17 0.00 05Nov2017 6 a.m. 63.50 6.80 99.91 0.00 05Nov2017 7 a.m. 62.49 5.20 99.49 0.00 Accuml. Values 1260.32 75.60 2262.59 872.60 Num. Valid Values 24 24 24 24 Avg. Values 52.51 3.15 94.27 36.36 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 11.40 121.64 94.27 75.03 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0573 definition: xcompl = 1 - (RELH_avg/100) TdC = 10.4856 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 = 0.5752 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4248 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.2454 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 = 0.7924 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.6297 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.005 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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