Detailed Weather Data for Project: FOSS

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 57.24 6.60 56.25 103.75 05Nov2017 9 a.m. 64.94 9.77 42.00 286.00 05Nov2017 10 a.m. 60.08 13.70 51.50 385.75 05Nov2017 11 a.m. 59.18 12.82 56.33 534.33 05Nov2017 12 p.m. 59.99 14.48 56.50 555.00 05Nov2017 1 p.m. 60.92 14.99 55.67 634.00 05Nov2017 2 p.m. 61.34 12.92 56.00 584.25 05Nov2017 3 p.m. 61.61 11.86 55.50 480.00 05Nov2017 4 p.m. 58.91 11.86 60.50 316.50 05Nov2017 5 p.m. 55.98 9.90 65.25 148.25 05Nov2017 6 p.m. 48.92 9.84 82.00 0.00 05Nov2017 7 p.m. 48.38 9.62 82.00 0.00 05Nov2017 8 p.m. 47.84 11.52 80.50 0.00 05Nov2017 9 p.m. 47.54 9.17 80.00 0.00 05Nov2017 10 p.m. 47.34 8.84 79.25 0.00 05Nov2017 11 p.m. 46.94 9.45 79.00 0.00 06Nov2017 12 a.m. 45.72 5.98 79.50 0.00 06Nov2017 1 a.m. 44.73 7.44 77.50 0.00 06Nov2017 2 a.m. 43.22 6.49 78.33 0.00 06Nov2017 3 a.m. 40.34 6.26 84.00 0.00 06Nov2017 4 a.m. 38.97 6.32 87.00 0.00 06Nov2017 5 a.m. 38.75 6.26 88.50 0.00 06Nov2017 6 a.m. 36.68 5.26 91.50 0.00 06Nov2017 7 a.m. 35.51 4.70 93.50 2.50 Accuml. Values 1211.07 226.05 1718.08 4030.33 Num. Valid Values 24 24 24 24 Avg. Values 50.46 9.42 71.59 167.93 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 10.26 363.71 71.59 346.53 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2841 definition: xcompl = 1 - (RELH_avg/100) TdC = 5.3997 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 = 0.5589 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4411 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.8548 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 = 3.5275 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 4.4720 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.140 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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