Detailed Weather Data for Project: FGIB

Date Time TAIR WSPD RELH SRAD 07Nov2017 8 a.m. 45.93 2.27 80.40 7.00 07Nov2017 9 a.m. 46.15 1.85 79.24 34.00 07Nov2017 10 a.m. 46.58 2.27 77.04 64.00 07Nov2017 11 a.m. 47.35 1.41 76.00 79.00 07Nov2017 12 p.m. 47.80 1.33 75.64 84.00 07Nov2017 1 p.m. 46.90 0.66 74.47 79.00 07Nov2017 2 p.m. 46.04 2.35 79.06 79.00 07Nov2017 3 p.m. 45.93 1.61 81.31 57.00 07Nov2017 4 p.m. 45.70 1.96 77.59 50.00 07Nov2017 5 p.m. 46.04 3.07 76.43 11.00 07Nov2017 6 p.m. 45.48 2.04 74.96 1.00 07Nov2017 7 p.m. 46.80 0.47 62.20 0.00 07Nov2017 8 p.m. 45.27 1.93 70.02 0.00 07Nov2017 9 p.m. 45.27 2.08 68.62 0.00 07Nov2017 10 p.m. 44.94 2.34 68.98 0.00 07Nov2017 11 p.m. 45.05 1.71 70.26 0.00 08Nov2017 12 a.m. 44.71 1.61 66.35 0.00 08Nov2017 1 a.m. 44.82 2.19 64.46 0.00 08Nov2017 2 a.m. 44.83 0.63 62.27 0.00 08Nov2017 3 a.m. 44.51 0.60 61.90 1.00 08Nov2017 4 a.m. 44.06 1.01 62.70 0.00 08Nov2017 5 a.m. 44.28 0.62 64.40 0.00 08Nov2017 6 a.m. 43.52 1.70 63.61 0.00 08Nov2017 7 a.m. 43.52 2.05 62.21 0.00 Accuml. Values 1091.48 39.76 1700.12 546.00 Num. Valid Values 24 24 24 24 Avg. Values 45.48 1.66 70.84 22.75 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 7.49 63.97 70.84 46.95 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2916 definition: xcompl = 1 - (RELH_avg/100) TdC = 2.5836 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 = 0.5182 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4818 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.5724 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 = 3.0096 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.5967 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.019 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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