Detailed Weather Data for Project: FALL

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 51.08 5.20 100.23 2.30 05Nov2017 9 a.m. 51.19 8.70 100.23 18.50 05Nov2017 10 a.m. 50.86 11.10 100.23 38.40 05Nov2017 11 a.m. 50.65 12.00 100.23 84.30 05Nov2017 12 p.m. 51.96 12.10 91.18 80.40 05Nov2017 1 p.m. 52.05 12.30 85.03 75.30 05Nov2017 2 p.m. 51.67 13.40 81.90 73.30 05Nov2017 3 p.m. 52.41 11.50 76.00 97.80 05Nov2017 4 p.m. 53.60 8.70 71.10 72.00 05Nov2017 5 p.m. 53.94 8.90 68.05 15.40 05Nov2017 6 p.m. 52.66 8.60 68.93 0.00 05Nov2017 7 p.m. 42.76 4.30 76.90 0.00 05Nov2017 8 p.m. 47.61 9.30 76.18 0.00 05Nov2017 9 p.m. 46.29 8.70 79.11 0.00 05Nov2017 10 p.m. 44.85 7.60 82.00 0.00 05Nov2017 11 p.m. 43.41 6.50 84.50 0.00 06Nov2017 12 a.m. 42.98 7.00 83.82 0.00 06Nov2017 1 a.m. 42.49 5.80 84.81 0.00 06Nov2017 2 a.m. 41.45 6.30 87.36 0.00 06Nov2017 3 a.m. 40.37 7.10 88.82 0.00 06Nov2017 4 a.m. 39.20 7.30 88.87 0.00 06Nov2017 5 a.m. 38.23 7.10 89.71 0.00 06Nov2017 6 a.m. 37.94 8.70 89.07 0.00 06Nov2017 7 a.m. 38.08 10.50 83.94 0.00 Accuml. Values 1117.76 208.70 2038.20 557.70 Num. Valid Values 24 24 24 24 Avg. Values 46.57 8.70 84.92 23.24 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 8.10 335.80 84.92 47.95 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1508 definition: xcompl = 1 - (RELH_avg/100) TdC = 5.7064 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 = 0.5273 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4727 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.5578 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 = 1.6383 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.1522 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.028 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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