Detailed Weather Data for Project: FGIB

Date Time TAIR WSPD RELH SRAD 02Dec2017 8 a.m. -24.29 1.02 8.85 11.00 02Dec2017 9 a.m. -24.07 1.01 8.73 125.00 02Dec2017 10 a.m. -23.96 3.05 8.79 321.00 02Dec2017 11 a.m. -24.07 2.69 8.79 442.00 02Dec2017 12 p.m. -24.72 2.76 8.97 516.00 02Dec2017 1 p.m. -24.29 1.63 8.97 531.00 02Dec2017 2 p.m. -24.50 1.51 8.91 487.00 02Dec2017 3 p.m. -23.51 0.64 9.10 369.00 02Dec2017 4 p.m. -24.29 0.74 9.16 234.00 02Dec2017 5 p.m. -22.76 0.08 9.16 67.00 02Dec2017 6 p.m. -24.29 1.30 8.97 2.00 02Dec2017 7 p.m. -24.18 5.61 8.73 0.00 02Dec2017 8 p.m. -24.18 0.36 8.97 0.00 02Dec2017 9 p.m. -23.19 0.77 9.10 0.00 02Dec2017 10 p.m. -25.28 0.56 8.67 0.00 02Dec2017 11 p.m. -23.85 0.45 8.91 0.00 03Dec2017 12 a.m. -23.30 0.69 8.97 0.00 03Dec2017 1 a.m. -24.07 0.44 8.73 0.00 03Dec2017 2 a.m. -24.18 0.79 8.85 0.00 03Dec2017 3 a.m. -24.50 5.24 8.79 0.00 03Dec2017 4 a.m. -24.50 7.67 8.91 0.00 03Dec2017 5 a.m. -24.39 8.28 9.04 0.00 03Dec2017 6 a.m. -24.18 6.01 8.79 0.00 03Dec2017 7 a.m. -24.39 4.56 8.91 1.00 Accuml. Values -578.92 57.86 213.77 3106.00 Num. Valid Values 24 24 24 24 Avg. Values -24.12 2.41 8.91 129.42 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -31.18 93.10 8.91 267.05 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.9109 definition: xcompl = 1 - (RELH_avg/100) TdC = -53.4935 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 = 0.0606 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.9394 definition: del_lambda2 = 1 - del_lambda1 Qn = -1.#IND 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 = 0.3882 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.3001 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: -1.#IO inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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