Detailed Weather Data for Project: BIGH

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 57.22 4.20 99.71 3.50 05Nov2017 9 a.m. 55.06 3.60 99.77 56.20 05Nov2017 10 a.m. 54.99 4.90 99.77 59.80 05Nov2017 11 a.m. 52.88 7.50 99.55 111.20 05Nov2017 12 p.m. 51.55 6.30 96.96 104.70 05Nov2017 1 p.m. 50.59 5.90 90.83 131.80 05Nov2017 2 p.m. 50.34 5.90 84.79 81.20 05Nov2017 3 p.m. 50.41 5.10 80.96 64.70 05Nov2017 4 p.m. 49.68 5.10 80.80 43.40 05Nov2017 5 p.m. 49.84 3.60 77.19 12.80 05Nov2017 6 p.m. 50.00 2.60 74.70 0.00 05Nov2017 7 p.m. 37.49 4.30 97.08 0.00 05Nov2017 8 p.m. 49.30 3.80 65.61 0.00 05Nov2017 9 p.m. 46.53 3.80 70.47 0.00 05Nov2017 10 p.m. 44.37 3.70 74.32 0.00 05Nov2017 11 p.m. 43.83 7.50 76.42 0.00 06Nov2017 12 a.m. 43.39 11.50 77.11 0.00 06Nov2017 1 a.m. 43.07 13.50 77.48 0.00 06Nov2017 2 a.m. 42.58 14.90 72.04 0.00 06Nov2017 3 a.m. 41.16 13.50 75.60 0.00 06Nov2017 4 a.m. 40.03 11.10 78.78 0.00 06Nov2017 5 a.m. 39.58 12.70 81.08 0.00 06Nov2017 6 a.m. 38.71 15.50 82.07 0.00 06Nov2017 7 a.m. 37.94 14.60 81.96 0.00 Accuml. Values 1120.53 185.10 1995.05 669.30 Num. Valid Values 24 24 24 24 Avg. Values 46.69 7.71 83.13 27.89 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 8.16 297.83 83.13 57.55 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1687 definition: xcompl = 1 - (RELH_avg/100) TdC = 5.4681 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 = 0.5282 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4718 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.4625 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 = 1.8364 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.1915 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.031 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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