Detailed Weather Data for Project: TOMS

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 61.47 12.08 56.00 92.00 05Nov2017 9 a.m. 65.54 13.79 50.33 279.33 05Nov2017 10 a.m. 71.82 13.76 42.00 466.75 05Nov2017 11 a.m. 75.20 13.87 37.00 571.00 05Nov2017 12 p.m. 78.80 14.54 29.00 665.50 05Nov2017 1 p.m. 78.56 10.89 30.00 651.00 05Nov2017 2 p.m. 77.13 12.47 31.50 640.00 05Nov2017 3 p.m. 73.22 14.54 37.50 505.00 05Nov2017 4 p.m. 69.84 13.70 43.25 351.50 05Nov2017 5 p.m. 64.17 14.65 54.50 162.25 05Nov2017 6 p.m. 56.48 19.24 71.00 0.00 05Nov2017 7 p.m. 53.42 17.00 78.00 0.00 05Nov2017 8 p.m. 51.98 15.43 80.50 0.00 05Nov2017 9 p.m. 49.76 17.08 84.67 0.00 05Nov2017 10 p.m. 48.33 18.85 85.25 0.00 05Nov2017 11 p.m. 47.57 18.12 85.25 0.00 06Nov2017 12 a.m. 46.89 13.76 86.75 0.00 06Nov2017 1 a.m. 46.71 11.41 87.50 0.00 06Nov2017 2 a.m. 46.67 11.58 87.25 0.00 06Nov2017 3 a.m. 45.98 9.32 87.67 0.00 06Nov2017 4 a.m. 45.05 10.18 86.50 0.00 06Nov2017 5 a.m. 44.24 10.96 87.00 0.00 06Nov2017 6 a.m. 44.87 12.92 85.75 0.00 06Nov2017 7 a.m. 45.05 12.41 86.00 1.50 Accuml. Values 1388.75 332.55 1590.17 4385.83 Num. Valid Values 24 24 24 24 Avg. Values 57.86 13.86 66.26 182.74 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 14.37 535.07 66.26 377.09 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3374 definition: xcompl = 1 - (RELH_avg/100) TdC = 8.2312 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 = 0.6162 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3838 definition: del_lambda2 = 1 - del_lambda1 Qn = 3.5225 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 = 5.4776 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 8.8065 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.219 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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