Detailed Weather Data for Project: ROBE

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 75.18 8.47 91.22 45.00 05Nov2017 9 a.m. 77.18 9.71 81.89 248.00 05Nov2017 10 a.m. 78.15 11.29 71.13 430.00 05Nov2017 11 a.m. 79.14 14.17 65.39 602.00 05Nov2017 12 p.m. 79.45 15.25 64.35 583.00 05Nov2017 1 p.m. 80.56 14.33 62.71 538.00 05Nov2017 2 p.m. 81.21 9.33 59.28 419.00 05Nov2017 3 p.m. 83.30 8.37 54.09 447.00 05Nov2017 4 p.m. 82.09 7.50 53.66 299.00 05Nov2017 5 p.m. 75.72 13.25 47.13 85.00 05Nov2017 6 p.m. 66.70 13.96 70.33 6.00 05Nov2017 7 p.m. 52.56 8.03 100.22 0.00 05Nov2017 8 p.m. 59.68 9.34 82.79 0.00 05Nov2017 9 p.m. 57.94 7.21 87.93 0.00 05Nov2017 10 p.m. 56.84 5.53 89.95 0.00 05Nov2017 11 p.m. 57.38 4.02 89.34 0.00 06Nov2017 12 a.m. 56.84 4.39 87.39 0.00 06Nov2017 1 a.m. 55.08 1.65 93.25 0.00 06Nov2017 2 a.m. 54.75 1.45 95.75 0.00 06Nov2017 3 a.m. 53.33 0.30 100.34 0.00 06Nov2017 4 a.m. 53.44 0.58 100.28 0.00 06Nov2017 5 a.m. 54.00 2.18 100.28 0.00 06Nov2017 6 a.m. 56.41 2.52 100.28 0.00 06Nov2017 7 a.m. 56.64 2.41 100.35 1.00 Accuml. Values 1583.58 175.24 1949.33 3703.00 Num. Valid Values 24 24 24 24 Avg. Values 65.98 7.30 81.22 154.29 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 18.88 281.96 81.22 318.38 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1878 definition: xcompl = 1 - (RELH_avg/100) TdC = 15.6221 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 = 0.6735 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3265 definition: del_lambda2 = 1 - del_lambda1 Qn = 3.0302 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 = 4.0574 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 4.2449 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.135 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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