Detailed Weather Data for Project: KAWL

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 57.52 4.90 86.05 79.60 05Nov2017 9 a.m. 56.71 6.30 85.63 246.10 05Nov2017 10 a.m. 54.72 14.70 92.87 248.60 05Nov2017 11 a.m. 55.26 15.00 93.42 156.60 05Nov2017 12 p.m. 55.11 17.20 93.15 74.80 05Nov2017 1 p.m. 54.61 16.70 88.75 81.10 05Nov2017 2 p.m. 54.37 16.80 84.74 83.70 05Nov2017 3 p.m. 53.94 17.40 82.30 67.10 05Nov2017 4 p.m. 52.52 15.90 81.46 57.60 05Nov2017 5 p.m. 52.32 14.00 79.46 15.60 05Nov2017 6 p.m. 52.11 11.30 77.02 0.00 05Nov2017 7 p.m. 43.74 11.10 84.18 0.00 05Nov2017 8 p.m. 49.71 8.50 80.54 0.00 05Nov2017 9 p.m. 49.37 18.60 77.91 0.00 05Nov2017 10 p.m. 48.20 20.90 79.14 0.00 05Nov2017 11 p.m. 47.16 19.40 79.10 0.00 06Nov2017 12 a.m. 46.40 19.20 80.32 0.00 06Nov2017 1 a.m. 45.45 15.70 81.76 0.00 06Nov2017 2 a.m. 45.39 14.70 82.46 0.00 06Nov2017 3 a.m. 45.30 15.10 83.25 0.00 06Nov2017 4 a.m. 45.41 18.60 84.86 0.00 06Nov2017 5 a.m. 45.16 18.20 84.83 0.00 06Nov2017 6 a.m. 44.33 19.20 85.53 0.00 06Nov2017 7 a.m. 43.30 19.30 85.90 0.00 Accuml. Values 1198.11 368.70 2014.63 1110.80 Num. Valid Values 24 24 24 24 Avg. Values 49.92 15.36 83.94 46.28 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 9.96 593.24 83.94 95.51 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1606 definition: xcompl = 1 - (RELH_avg/100) TdC = 7.3674 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 = 0.5546 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4454 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.0511 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 = 1.9718 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.8902 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.067 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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