Detailed Weather Data for Project: FGIB

Date Time TAIR WSPD RELH SRAD 03Dec2017 8 a.m. -24.29 7.84 8.85 7.00 03Dec2017 9 a.m. -25.06 6.68 8.85 53.00 03Dec2017 10 a.m. -25.17 7.98 8.79 220.00 03Dec2017 11 a.m. -24.18 6.05 8.97 277.00 03Dec2017 12 p.m. -24.61 4.39 8.85 337.00 03Dec2017 1 p.m. -24.50 4.36 8.79 337.00 03Dec2017 2 p.m. -24.39 3.89 8.91 412.00 03Dec2017 3 p.m. -24.29 5.69 8.97 347.00 03Dec2017 4 p.m. -24.18 3.37 8.91 103.00 03Dec2017 5 p.m. -24.18 5.15 8.91 59.00 03Dec2017 6 p.m. -23.85 4.70 9.03 2.00 03Dec2017 7 p.m. -24.29 1.00 8.91 0.00 03Dec2017 8 p.m. -24.18 5.62 8.91 0.00 03Dec2017 9 p.m. -24.39 7.59 8.97 0.00 03Dec2017 10 p.m. -24.29 7.62 8.85 0.00 03Dec2017 11 p.m. -24.61 8.58 8.91 0.00 04Dec2017 12 a.m. -24.61 9.00 9.10 0.00 04Dec2017 1 a.m. -24.39 8.54 8.97 0.00 04Dec2017 2 a.m. -24.29 8.18 8.91 0.00 04Dec2017 3 a.m. -24.39 9.29 8.97 0.00 04Dec2017 4 a.m. -24.07 8.04 9.16 0.00 04Dec2017 5 a.m. -24.07 5.44 9.03 0.00 04Dec2017 6 a.m. -24.29 6.43 9.10 0.00 04Dec2017 7 a.m. -24.39 5.08 9.04 0.00 Accuml. Values -584.95 150.51 214.66 2154.00 Num. Valid Values 24 24 24 24 Avg. Values -24.37 6.27 8.94 89.75 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -31.32 242.17 8.94 185.20 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.9106 definition: xcompl = 1 - (RELH_avg/100) TdC = -53.5688 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 = 0.0599 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.9401 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 = 0.3826 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.4819 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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