Detailed Weather Data for Project: BROK

Date Time TAIR WSPD RELH SRAD 04Nov2017 8 a.m. 62.64 0.56 99.51 2.00 04Nov2017 9 a.m. 64.06 1.45 99.76 12.00 04Nov2017 10 a.m. 65.93 3.18 99.94 29.00 04Nov2017 11 a.m. 67.24 3.68 100.05 75.00 04Nov2017 12 p.m. 68.88 3.86 100.11 110.00 04Nov2017 1 p.m. 69.76 3.21 99.74 67.00 04Nov2017 2 p.m. 71.96 2.03 99.13 262.00 04Nov2017 3 p.m. 74.50 2.50 88.76 193.00 04Nov2017 4 p.m. 78.44 2.56 72.76 332.00 04Nov2017 5 p.m. 78.67 1.41 71.18 141.00 04Nov2017 6 p.m. 76.37 2.97 75.09 31.00 04Nov2017 7 p.m. 73.72 2.87 80.03 0.00 04Nov2017 8 p.m. 75.06 2.98 74.73 0.00 04Nov2017 9 p.m. 69.98 1.99 89.00 1.00 04Nov2017 10 p.m. 69.46 1.91 91.39 0.00 04Nov2017 11 p.m. 68.23 1.65 96.08 0.00 05Nov2017 12 a.m. 67.35 2.50 98.71 0.00 05Nov2017 1 a.m. 67.46 2.85 99.01 0.00 05Nov2017 2 a.m. 66.90 2.15 99.26 0.00 05Nov2017 3 a.m. 66.92 1.93 99.39 0.00 05Nov2017 4 a.m. 68.67 3.07 99.13 0.00 05Nov2017 5 a.m. 69.12 2.64 99.02 0.00 05Nov2017 6 a.m. 68.77 3.20 99.32 0.00 05Nov2017 7 a.m. 68.45 3.04 99.38 2.00 Accuml. Values 1678.55 60.19 2230.48 1257.00 Num. Valid Values 24 24 24 24 Avg. Values 69.94 2.51 92.94 52.38 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 21.08 96.85 92.94 108.08 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0706 definition: xcompl = 1 - (RELH_avg/100) TdC = 19.8735 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 = 0.6991 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3009 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.3262 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 = 1.7867 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.1680 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.023 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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