Detailed Weather Data for Project: HEYB

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 71.19 4.60 78.91 50.20 05Nov2017 9 a.m. 73.71 4.90 71.65 220.20 05Nov2017 10 a.m. 75.58 4.20 59.18 249.80 05Nov2017 11 a.m. 76.64 6.90 46.47 407.80 05Nov2017 12 p.m. 74.68 11.50 43.59 510.30 05Nov2017 1 p.m. 69.44 14.40 51.50 556.90 05Nov2017 2 p.m. 65.73 14.70 63.30 498.10 05Nov2017 3 p.m. 61.07 14.60 73.12 171.80 05Nov2017 4 p.m. 58.98 12.70 74.03 71.30 05Nov2017 5 p.m. 57.83 12.30 74.52 10.50 05Nov2017 6 p.m. 56.93 12.30 73.72 0.00 05Nov2017 7 p.m. 47.71 8.30 78.36 0.00 05Nov2017 8 p.m. 55.00 10.10 74.71 0.00 05Nov2017 9 p.m. 54.55 8.50 71.57 0.00 05Nov2017 10 p.m. 53.94 4.30 71.41 0.00 05Nov2017 11 p.m. 52.41 3.80 75.06 0.00 06Nov2017 12 a.m. 50.94 4.40 79.09 0.00 06Nov2017 1 a.m. 50.32 4.30 78.94 0.00 06Nov2017 2 a.m. 50.22 3.10 78.64 0.00 06Nov2017 3 a.m. 50.18 5.10 78.60 0.00 06Nov2017 4 a.m. 50.54 5.70 77.63 0.00 06Nov2017 5 a.m. 50.97 5.90 77.62 0.00 06Nov2017 6 a.m. 51.10 6.10 78.70 0.00 06Nov2017 7 a.m. 50.77 6.20 79.70 0.00 Accuml. Values 1410.44 188.90 1710.02 2746.90 Num. Valid Values 24 24 24 24 Avg. Values 58.77 7.87 71.25 114.45 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 14.87 303.94 71.25 236.18 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2875 definition: xcompl = 1 - (RELH_avg/100) TdC = 9.7812 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 = 0.6229 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3771 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.7210 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 = 4.8126 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 5.1870 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.119 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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