Detailed Weather Data for Project: SARD

Date Time TAIR WSPD RELH SRAD 04Dec2017 8 a.m. 61.47 14.30 91.24 3.50 04Dec2017 9 a.m. 62.22 15.90 94.21 17.70 04Dec2017 10 a.m. 63.43 18.80 90.85 47.60 04Dec2017 11 a.m. 65.71 20.30 84.13 106.90 04Dec2017 12 p.m. 67.51 18.80 79.53 82.70 04Dec2017 1 p.m. 68.45 16.50 77.75 118.30 04Dec2017 2 p.m. 69.85 14.60 75.10 119.30 04Dec2017 3 p.m. 71.76 19.60 71.30 179.20 04Dec2017 4 p.m. 74.25 17.10 64.22 112.20 04Dec2017 5 p.m. 73.76 16.00 65.27 25.30 04Dec2017 6 p.m. 74.01 11.60 64.30 0.00 04Dec2017 7 p.m. 42.15 1.40 36.31 0.00 04Dec2017 8 p.m. 63.91 9.60 66.78 0.00 04Dec2017 9 p.m. 63.12 9.40 49.12 0.00 04Dec2017 10 p.m. 61.88 17.90 46.65 0.00 04Dec2017 11 p.m. 60.04 23.30 41.87 0.00 05Dec2017 12 a.m. 56.77 24.20 45.79 0.00 05Dec2017 1 a.m. 53.64 24.30 46.30 0.00 05Dec2017 2 a.m. 51.33 10.60 47.88 0.00 05Dec2017 3 a.m. 49.57 19.80 48.44 0.00 05Dec2017 4 a.m. 47.66 24.50 50.64 0.00 05Dec2017 5 a.m. 46.15 13.50 53.57 0.00 05Dec2017 6 a.m. 45.12 13.70 56.01 0.00 05Dec2017 7 a.m. 44.37 15.70 58.02 0.00 Accuml. Values 1438.14 391.40 1505.28 812.70 Num. Valid Values 24 24 24 24 Avg. Values 59.92 16.31 62.72 33.86 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 15.51 629.76 62.72 69.88 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3728 definition: xcompl = 1 - (RELH_avg/100) TdC = 8.5093 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 = 0.6313 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3687 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.2441 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 = 6.5203 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 11.6957 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.164 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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