Detailed Weather Data for Project: FGIB

Date Time TAIR WSPD RELH SRAD 30Dec2017 8 a.m. 31.21 2.93 87.47 1.00 30Dec2017 9 a.m. 29.98 2.99 89.79 8.00 30Dec2017 10 a.m. 30.11 2.27 91.62 22.00 30Dec2017 11 a.m. 28.89 0.26 86.01 45.00 30Dec2017 12 p.m. 29.12 2.03 84.37 68.00 30Dec2017 1 p.m. 28.78 1.41 85.09 74.00 30Dec2017 2 p.m. 28.24 0.53 81.31 99.00 30Dec2017 3 p.m. 28.02 1.00 78.13 73.00 30Dec2017 4 p.m. 27.46 1.23 76.43 47.00 30Dec2017 5 p.m. 27.14 2.33 76.43 20.00 30Dec2017 6 p.m. 27.25 2.05 73.62 1.00 30Dec2017 7 p.m. 19.22 3.95 46.94 0.00 30Dec2017 8 p.m. 27.59 1.38 71.12 0.00 30Dec2017 9 p.m. 27.57 0.11 73.92 0.00 30Dec2017 10 p.m. 27.36 0.24 73.37 0.00 30Dec2017 11 p.m. 28.24 0.53 74.84 0.00 31Dec2017 12 a.m. 28.35 1.38 75.27 0.00 31Dec2017 1 a.m. 27.46 1.37 73.86 0.00 31Dec2017 2 a.m. 27.03 3.04 75.64 1.00 31Dec2017 3 a.m. 25.38 2.43 68.13 0.00 31Dec2017 4 a.m. 20.53 3.11 89.37 0.00 31Dec2017 5 a.m. 18.68 2.68 81.06 0.00 31Dec2017 6 a.m. 18.79 2.06 72.41 0.00 31Dec2017 7 a.m. 18.34 3.50 73.92 0.00 Accuml. Values 630.73 44.81 1860.12 459.00 Num. Valid Values 24 24 24 24 Avg. Values 26.28 1.87 77.51 19.13 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -3.18 72.10 77.51 39.46 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2249 definition: xcompl = 1 - (RELH_avg/100) TdC = -6.5422 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 = 0.3550 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.6450 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.7012 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 = 1.0946 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.6812 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.007 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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