Detailed Weather Data for Project: COUN

Date Time TAIR WSPD RELH SRAD 04Nov2017 8 a.m. 41.70 1.90 99.95 0.00 04Nov2017 9 a.m. 41.85 1.00 100.05 1.10 04Nov2017 10 a.m. 42.24 1.40 100.16 25.40 04Nov2017 11 a.m. 43.12 1.10 100.22 66.80 04Nov2017 12 p.m. 44.29 1.00 100.21 79.80 04Nov2017 1 p.m. 45.09 2.30 99.95 107.50 04Nov2017 2 p.m. 45.73 2.50 99.25 89.70 04Nov2017 3 p.m. 46.94 2.60 96.61 87.70 04Nov2017 4 p.m. 48.43 2.90 92.32 135.20 04Nov2017 5 p.m. 49.64 3.40 89.75 76.00 04Nov2017 6 p.m. 50.29 1.90 88.79 10.50 04Nov2017 7 p.m. 50.20 4.70 89.53 0.00 04Nov2017 8 p.m. 47.25 0.90 70.49 0.00 04Nov2017 9 p.m. 50.61 6.70 90.59 0.00 04Nov2017 10 p.m. 50.79 4.70 91.60 0.00 04Nov2017 11 p.m. 50.99 4.70 91.85 0.00 05Nov2017 12 a.m. 50.41 6.00 96.09 0.00 05Nov2017 1 a.m. 50.25 4.20 97.50 0.00 05Nov2017 2 a.m. 49.75 3.30 97.70 0.00 05Nov2017 3 a.m. 49.69 2.30 98.08 0.00 05Nov2017 4 a.m. 50.49 5.60 97.84 0.00 05Nov2017 5 a.m. 49.73 8.70 99.23 0.00 05Nov2017 6 a.m. 49.68 9.60 98.57 0.00 05Nov2017 7 a.m. 49.73 10.10 96.10 0.00 Accuml. Values 1148.90 93.50 2282.43 679.70 Num. Valid Values 24 24 24 24 Avg. Values 47.87 3.90 95.10 28.32 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 8.82 150.44 95.10 58.44 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0490 definition: xcompl = 1 - (RELH_avg/100) TdC = 8.0531 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 = 0.5379 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4621 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.4471 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 = 0.5737 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.5251 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.000 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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