Detailed Weather Data for Project: ARBU

Date Time TAIR WSPD RELH SRAD 04Nov2017 8 a.m. 53.33 6.60 96.00 4.50 04Nov2017 9 a.m. 56.93 7.33 95.00 74.00 04Nov2017 10 a.m. 59.24 9.10 98.67 110.67 04Nov2017 11 a.m. 62.69 9.79 93.25 289.00 04Nov2017 12 p.m. 66.62 10.51 86.00 355.33 04Nov2017 1 p.m. 74.97 12.08 69.25 533.75 04Nov2017 2 p.m. 80.12 12.30 60.00 604.67 04Nov2017 3 p.m. 83.97 13.92 51.00 581.50 04Nov2017 4 p.m. 86.00 15.10 46.75 464.50 04Nov2017 5 p.m. 85.14 14.60 50.25 288.75 04Nov2017 6 p.m. 82.08 11.97 57.50 96.75 04Nov2017 7 p.m. 76.46 8.50 67.00 0.00 04Nov2017 8 p.m. 76.82 10.74 66.00 0.00 04Nov2017 9 p.m. 76.55 10.74 67.00 0.00 04Nov2017 10 p.m. 75.38 11.18 69.00 0.00 04Nov2017 11 p.m. 73.80 11.35 74.00 0.00 05Nov2017 12 a.m. 73.85 11.91 78.75 0.00 05Nov2017 1 a.m. 73.67 11.63 79.50 0.00 05Nov2017 2 a.m. 73.04 12.58 81.75 0.00 05Nov2017 3 a.m. 72.08 11.78 84.33 0.00 05Nov2017 4 a.m. 70.82 10.66 87.67 0.00 05Nov2017 5 a.m. 69.62 9.84 91.00 0.00 05Nov2017 6 a.m. 69.03 9.90 92.75 0.00 05Nov2017 7 a.m. 68.45 9.62 93.50 2.50 Accuml. Values 1740.66 263.73 1835.92 3405.92 Num. Valid Values 24 24 24 24 Avg. Values 72.53 10.99 76.50 141.91 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 22.52 424.34 76.50 292.84 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2350 definition: xcompl = 1 - (RELH_avg/100) TdC = 18.2486 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 = 0.7150 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.2850 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.9090 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 = 6.3110 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 8.3507 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.176 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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