Detailed Weather Data for Project: FGIB

Date Time TAIR WSPD RELH SRAD 06Nov2017 8 a.m. 54.84 0.49 60.50 11.00 06Nov2017 9 a.m. 55.83 0.23 60.13 35.00 06Nov2017 10 a.m. 53.74 0.98 76.19 46.00 06Nov2017 11 a.m. 54.07 1.33 77.96 72.00 06Nov2017 12 p.m. 54.50 1.31 78.88 86.00 06Nov2017 1 p.m. 55.04 0.59 79.36 82.00 06Nov2017 2 p.m. 52.75 0.33 81.38 51.00 06Nov2017 3 p.m. 51.42 0.37 81.98 45.00 06Nov2017 4 p.m. 50.65 0.17 81.37 27.00 06Nov2017 5 p.m. 49.01 0.92 80.16 12.00 06Nov2017 6 p.m. 47.70 1.26 80.83 1.00 06Nov2017 7 p.m. 45.48 2.21 73.37 0.00 06Nov2017 8 p.m. 46.90 1.23 81.19 0.00 06Nov2017 9 p.m. 45.93 0.27 80.46 0.00 06Nov2017 10 p.m. 45.93 0.54 81.98 0.00 06Nov2017 11 p.m. 46.38 0.53 80.83 0.00 07Nov2017 12 a.m. 46.58 0.31 81.61 0.00 07Nov2017 1 a.m. 45.61 0.30 80.77 0.00 07Nov2017 2 a.m. 45.39 2.63 79.18 0.00 07Nov2017 3 a.m. 46.26 2.51 80.16 0.00 07Nov2017 4 a.m. 45.93 1.92 80.28 0.00 07Nov2017 5 a.m. 46.90 0.57 81.74 0.00 07Nov2017 6 a.m. 46.04 0.09 82.16 0.00 07Nov2017 7 a.m. 45.50 3.59 80.40 1.00 Accuml. Values 1178.40 24.68 1882.87 469.00 Num. Valid Values 24 24 24 24 Avg. Values 49.10 1.03 78.45 19.54 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 9.50 39.71 78.45 40.32 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2155 definition: xcompl = 1 - (RELH_avg/100) TdC = 5.9624 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 = 0.5479 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4521 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.6229 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 = 2.5511 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.2201 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.008 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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