Detailed Weather Data for Project: MCGE

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 71.73 10.12 89.00 37.75 05Nov2017 9 a.m. 73.10 12.68 84.00 141.00 05Nov2017 10 a.m. 76.59 13.31 75.75 367.00 05Nov2017 11 a.m. 80.12 12.53 66.67 483.00 05Nov2017 12 p.m. 84.02 14.71 54.25 622.00 05Nov2017 1 p.m. 85.76 13.20 48.00 630.00 05Nov2017 2 p.m. 87.39 12.97 44.00 566.75 05Nov2017 3 p.m. 88.07 12.58 41.00 449.00 05Nov2017 4 p.m. 88.16 10.29 38.00 285.50 05Nov2017 5 p.m. 86.45 7.83 38.25 112.25 05Nov2017 6 p.m. 71.24 16.11 52.00 0.00 05Nov2017 7 p.m. 66.20 12.30 58.00 0.00 05Nov2017 8 p.m. 64.13 13.53 63.50 0.00 05Nov2017 9 p.m. 60.98 12.30 71.33 0.00 05Nov2017 10 p.m. 58.19 10.01 76.00 0.00 05Nov2017 11 p.m. 56.48 9.45 79.25 0.00 06Nov2017 12 a.m. 55.58 8.00 80.75 0.00 06Nov2017 1 a.m. 54.77 6.10 81.00 0.00 06Nov2017 2 a.m. 54.36 4.59 81.50 0.00 06Nov2017 3 a.m. 53.54 3.21 84.33 0.00 06Nov2017 4 a.m. 53.15 2.01 86.25 0.00 06Nov2017 5 a.m. 53.15 1.79 88.00 0.00 06Nov2017 6 a.m. 54.72 5.26 84.75 0.00 06Nov2017 7 a.m. 55.76 4.36 82.50 1.50 Accuml. Values 1633.64 229.24 1648.08 3695.75 Num. Valid Values 24 24 24 24 Avg. Values 68.07 9.55 68.67 153.99 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 20.04 368.85 68.67 317.76 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3133 definition: xcompl = 1 - (RELH_avg/100) TdC = 14.1978 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 = 0.6872 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3128 definition: del_lambda2 = 1 - del_lambda1 Qn = 3.0990 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 = 7.2406 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 8.5053 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.189 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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