Detailed Weather Data for Project: TRUS

Date Time TAIR WSPD RELH SRAD 02Dec2017 8 a.m. 55.51 5.83 55.07 1.00 02Dec2017 9 a.m. 54.73 9.67 48.54 87.00 02Dec2017 10 a.m. 55.85 10.27 47.33 221.00 02Dec2017 11 a.m. 57.27 8.78 46.95 146.00 02Dec2017 12 p.m. 61.77 6.40 39.44 242.00 02Dec2017 1 p.m. 66.38 5.11 34.92 605.00 02Dec2017 2 p.m. 69.24 4.09 31.57 414.00 02Dec2017 3 p.m. 70.47 4.82 29.13 447.00 02Dec2017 4 p.m. 69.24 2.13 29.98 340.00 02Dec2017 5 p.m. 66.94 2.37 34.68 137.00 02Dec2017 6 p.m. 63.75 6.58 37.43 17.00 02Dec2017 7 p.m. 68.14 14.65 60.63 0.00 02Dec2017 8 p.m. 57.38 0.96 63.19 0.00 02Dec2017 9 p.m. 58.37 0.23 56.91 0.00 02Dec2017 10 p.m. 56.93 2.10 63.74 0.00 02Dec2017 11 p.m. 54.19 3.73 65.15 0.00 03Dec2017 12 a.m. 55.29 1.30 60.26 0.00 03Dec2017 1 a.m. 53.42 1.07 71.50 0.00 03Dec2017 2 a.m. 53.10 1.69 58.92 0.00 03Dec2017 3 a.m. 53.64 3.90 63.81 0.00 03Dec2017 4 a.m. 54.19 1.43 65.45 0.00 03Dec2017 5 a.m. 49.68 3.23 63.68 0.00 03Dec2017 6 a.m. 50.13 3.15 61.36 0.00 03Dec2017 7 a.m. 51.22 2.01 63.19 0.00 Accuml. Values 1406.84 105.50 1252.83 2657.00 Num. Valid Values 24 24 24 24 Avg. Values 58.62 4.40 52.20 110.71 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 14.79 169.75 52.20 228.45 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4780 definition: xcompl = 1 - (RELH_avg/100) TdC = 5.0996 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 = 0.6218 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3782 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.6209 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 = 8.0440 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 5.7140 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.125 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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