Detailed Weather Data for Project: SKIA

Date Time TAIR WSPD RELH SRAD 06Nov2017 8 a.m. -901.00 10.18 79.69 10.17 06Nov2017 9 a.m. -901.00 10.13 80.27 42.75 06Nov2017 10 a.m. -901.00 9.77 80.63 92.27 06Nov2017 11 a.m. -901.00 8.32 77.79 122.55 06Nov2017 12 p.m. -901.00 8.74 75.52 149.19 06Nov2017 1 p.m. -901.00 7.71 74.14 176.03 06Nov2017 2 p.m. -901.00 7.00 72.57 162.78 06Nov2017 3 p.m. -901.00 9.39 72.71 121.57 06Nov2017 4 p.m. -901.00 8.15 77.54 60.43 06Nov2017 5 p.m. -901.00 8.80 84.20 0.92 06Nov2017 6 p.m. -901.00 7.37 89.39 0.00 06Nov2017 7 p.m. -901.00 13.99 72.52 0.00 06Nov2017 8 p.m. -901.00 7.20 89.85 0.00 06Nov2017 9 p.m. -901.00 6.64 90.43 0.00 06Nov2017 10 p.m. -901.00 6.32 92.18 0.00 06Nov2017 11 p.m. -901.00 7.09 94.01 0.00 07Nov2017 12 a.m. -901.00 6.19 92.73 0.00 07Nov2017 1 a.m. -901.00 6.73 93.68 0.00 07Nov2017 2 a.m. -901.00 6.34 95.05 0.00 07Nov2017 3 a.m. -901.00 7.82 94.83 0.00 07Nov2017 4 a.m. -901.00 7.91 95.40 0.00 07Nov2017 5 a.m. -901.00 6.13 96.47 0.00 07Nov2017 6 a.m. -901.00 8.23 97.79 0.00 07Nov2017 7 a.m. -901.00 9.50 97.39 0.00 Accuml. Values 0.00 195.65 2066.78 938.66 Num. Valid Values 0 24 24 24 Avg. Values 8.15 86.12 39.11 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -17.78 314.80 86.12 80.71 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1388 definition: xcompl = 1 - (RELH_avg/100) TdC = -19.5524 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 = 0.1635 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.8365 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.4278 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 = 0.2139 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.3431 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.009 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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