Detailed Weather Data for Project: SKIA

Date Time TAIR WSPD RELH SRAD 03Mar2018 8 a.m. -901.00 3.93 68.65 80.94 03Mar2018 9 a.m. -901.00 9.10 65.01 296.04 03Mar2018 10 a.m. -901.00 13.36 59.54 508.09 03Mar2018 11 a.m. -901.00 15.30 55.11 687.82 03Mar2018 12 p.m. -901.00 15.81 51.55 837.21 03Mar2018 1 p.m. -901.00 13.79 48.74 833.81 03Mar2018 2 p.m. -901.00 13.40 46.15 804.53 03Mar2018 3 p.m. -901.00 13.37 43.64 704.50 03Mar2018 4 p.m. -901.00 13.96 41.87 553.43 03Mar2018 5 p.m. -901.00 13.91 41.12 350.00 03Mar2018 6 p.m. -901.00 12.37 41.32 120.56 03Mar2018 7 p.m. -901.00 7.40 76.74 0.00 03Mar2018 8 p.m. -901.00 8.68 46.72 0.00 03Mar2018 9 p.m. -901.00 7.03 48.75 0.00 03Mar2018 10 p.m. -901.00 7.20 49.50 0.00 03Mar2018 11 p.m. -901.00 5.14 53.96 0.00 04Mar2018 12 a.m. -901.00 4.96 58.08 0.00 04Mar2018 1 a.m. -901.00 4.90 62.43 0.00 04Mar2018 2 a.m. -901.00 7.97 54.52 0.00 04Mar2018 3 a.m. -901.00 7.89 51.48 0.00 04Mar2018 4 a.m. -901.00 8.55 50.82 0.00 04Mar2018 5 a.m. -901.00 8.35 51.35 0.00 04Mar2018 6 a.m. -901.00 6.94 50.53 0.00 04Mar2018 7 a.m. -901.00 8.26 51.11 0.00 Accuml. Values 0.00 231.57 1268.69 5776.93 Num. Valid Values 0 24 24 24 Avg. Values 9.65 52.86 240.71 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -17.78 372.60 52.86 496.70 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4714 definition: xcompl = 1 - (RELH_avg/100) TdC = -25.0855 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 = 3.1306 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 = 0.7173 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.1201 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.057 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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