Detailed Weather Data for Project: WAUR

Date Time TAIR WSPD RELH SRAD 03Dec2017 8 a.m. 51.85 0.00 84.91 6.00 03Dec2017 9 a.m. 55.92 0.00 83.51 91.00 03Dec2017 10 a.m. 65.70 0.00 72.88 294.00 03Dec2017 11 a.m. 69.89 0.00 67.40 273.00 03Dec2017 12 p.m. 76.82 0.00 59.58 342.00 03Dec2017 1 p.m. 79.25 0.00 55.81 534.00 03Dec2017 2 p.m. 80.78 0.00 49.15 465.00 03Dec2017 3 p.m. 81.99 0.00 48.11 420.00 03Dec2017 4 p.m. 81.01 0.00 51.72 271.00 03Dec2017 5 p.m. 77.81 0.00 57.27 96.00 03Dec2017 6 p.m. 75.16 0.00 64.66 6.00 03Dec2017 7 p.m. 66.25 0.00 45.91 0.00 03Dec2017 8 p.m. 70.21 0.00 80.10 0.00 03Dec2017 9 p.m. 68.90 0.00 86.50 0.00 03Dec2017 10 p.m. 68.13 0.00 89.98 0.00 03Dec2017 11 p.m. 67.46 0.00 92.05 0.00 04Dec2017 12 a.m. 67.91 0.00 93.27 0.00 04Dec2017 1 a.m. 68.23 0.00 92.48 0.00 04Dec2017 2 a.m. 69.44 0.00 89.74 0.00 04Dec2017 3 a.m. 69.98 0.00 87.54 0.00 04Dec2017 4 a.m. 69.22 0.00 89.07 0.00 04Dec2017 5 a.m. 69.12 0.00 89.74 0.00 04Dec2017 6 a.m. 68.45 0.00 91.32 0.00 04Dec2017 7 a.m. 68.02 0.00 92.98 0.00 Accuml. Values 1687.51 0.00 1815.68 2798.00 Num. Valid Values 24 0 24 24 Avg. Values 70.31 75.65 116.58 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 21.28 0.00 75.65 240.57 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2435 definition: xcompl = 1 - (RELH_avg/100) TdC = 16.8835 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 = 0.7014 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.2986 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.0986 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 = 6.0690 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.0530 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.082 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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