Detailed Weather Data for Project: SARD

Date Time TAIR WSPD RELH SRAD 07Nov2017 8 a.m. 47.05 16.30 91.88 1.40 07Nov2017 9 a.m. 46.99 15.20 90.09 33.50 07Nov2017 10 a.m. 47.84 10.50 87.44 101.20 07Nov2017 11 a.m. 48.74 11.60 86.06 130.50 07Nov2017 12 p.m. 49.21 12.70 85.79 140.90 07Nov2017 1 p.m. 49.60 14.80 85.93 141.20 07Nov2017 2 p.m. 49.44 16.70 86.88 84.50 07Nov2017 3 p.m. 48.63 19.40 89.10 23.60 07Nov2017 4 p.m. 48.11 21.40 88.69 7.60 07Nov2017 5 p.m. 47.77 13.70 86.40 0.90 07Nov2017 6 p.m. 47.23 16.70 88.41 0.00 07Nov2017 7 p.m. 47.48 2.10 79.48 0.00 07Nov2017 8 p.m. 46.62 17.20 91.17 0.00 07Nov2017 9 p.m. 46.62 18.40 90.34 0.00 07Nov2017 10 p.m. 46.45 16.70 89.87 0.00 07Nov2017 11 p.m. 46.45 16.50 90.09 0.00 08Nov2017 12 a.m. 46.36 12.30 89.37 0.00 08Nov2017 1 a.m. 46.17 14.40 88.57 0.00 08Nov2017 2 a.m. 45.77 14.10 88.46 0.00 08Nov2017 3 a.m. 45.48 14.50 89.64 0.00 08Nov2017 4 a.m. 45.27 11.30 92.20 0.00 08Nov2017 5 a.m. 45.57 9.60 90.94 0.00 08Nov2017 6 a.m. 46.09 10.40 90.16 0.00 08Nov2017 7 a.m. 46.78 13.10 88.40 0.00 Accuml. Values 1131.73 339.60 2125.36 665.30 Num. Valid Values 24 24 24 24 Avg. Values 47.16 14.15 88.56 27.72 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 8.42 546.42 88.56 57.20 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1144 definition: xcompl = 1 - (RELH_avg/100) TdC = 6.6196 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 = 0.5321 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4679 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.4634 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 = 1.2802 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.4913 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.036 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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