Detailed Weather Data for Project: SARD

Date Time TAIR WSPD RELH SRAD 04Nov2017 8 a.m. 66.07 15.90 81.13 0.00 04Nov2017 9 a.m. 64.65 15.70 90.40 29.00 04Nov2017 10 a.m. 65.28 19.00 92.20 122.40 04Nov2017 11 a.m. 66.34 19.60 91.87 215.20 04Nov2017 12 p.m. 68.09 20.70 90.56 335.70 04Nov2017 1 p.m. 71.62 18.60 82.09 452.00 04Nov2017 2 p.m. 75.33 17.50 73.73 409.80 04Nov2017 3 p.m. 78.85 19.10 66.24 409.40 04Nov2017 4 p.m. 81.84 19.10 56.38 309.20 04Nov2017 5 p.m. 82.51 17.90 53.88 202.90 04Nov2017 6 p.m. 81.52 16.50 55.69 45.80 04Nov2017 7 p.m. 79.47 17.80 59.76 0.00 04Nov2017 8 p.m. 69.42 15.30 52.71 0.00 04Nov2017 9 p.m. 76.53 19.70 67.39 0.00 04Nov2017 10 p.m. 75.72 16.60 68.50 0.00 04Nov2017 11 p.m. 74.73 18.00 70.16 0.00 05Nov2017 12 a.m. 73.94 14.30 72.91 0.00 05Nov2017 1 a.m. 73.47 11.60 74.42 0.00 05Nov2017 2 a.m. 72.95 16.40 76.11 0.00 05Nov2017 3 a.m. 72.63 18.70 77.47 0.00 05Nov2017 4 a.m. 72.25 16.50 79.09 0.00 05Nov2017 5 a.m. 72.32 21.40 80.03 0.00 05Nov2017 6 a.m. 72.70 20.40 80.27 0.00 05Nov2017 7 a.m. 72.82 20.90 80.50 0.00 Accuml. Values 1761.06 427.20 1773.49 2531.40 Num. Valid Values 24 24 24 24 Avg. Values 73.38 17.80 73.90 105.48 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 22.99 687.36 73.90 217.65 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2610 definition: xcompl = 1 - (RELH_avg/100) TdC = 18.1700 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 = 0.7201 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.2799 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.8685 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 = 7.2053 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 13.7200 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.204 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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