Detailed Weather Data for Project: FGIB

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 73.40 3.56 65.02 25.00 05Nov2017 9 a.m. 76.48 3.80 57.26 240.00 05Nov2017 10 a.m. 77.90 3.82 50.36 389.00 05Nov2017 11 a.m. 80.20 4.26 39.56 617.00 05Nov2017 12 p.m. 81.64 3.31 33.64 511.00 05Nov2017 1 p.m. 84.29 2.10 26.86 560.00 05Nov2017 2 p.m. 79.43 1.56 26.00 561.00 05Nov2017 3 p.m. 70.97 0.98 39.74 457.00 05Nov2017 4 p.m. 65.05 0.44 49.32 296.00 05Nov2017 5 p.m. 60.66 0.83 56.65 92.00 05Nov2017 6 p.m. 58.78 0.22 56.96 4.00 05Nov2017 7 p.m. 47.35 1.04 80.95 0.00 05Nov2017 8 p.m. 56.93 3.51 55.98 0.00 05Nov2017 9 p.m. 56.35 2.57 57.38 0.00 05Nov2017 10 p.m. 56.16 2.05 58.36 0.00 05Nov2017 11 p.m. 56.26 2.82 57.88 0.00 06Nov2017 12 a.m. 56.59 0.82 57.50 0.00 06Nov2017 1 a.m. 56.25 0.41 57.26 0.00 06Nov2017 2 a.m. 56.80 0.30 53.84 0.00 06Nov2017 3 a.m. 55.94 0.09 55.49 0.00 06Nov2017 4 a.m. 54.95 0.25 58.30 0.00 06Nov2017 5 a.m. 53.94 0.33 61.65 0.00 06Nov2017 6 a.m. 53.62 0.14 62.52 0.00 06Nov2017 7 a.m. 54.50 0.10 60.80 0.00 Accuml. Values 1524.45 39.31 1279.28 3752.00 Num. Valid Values 24 24 24 24 Avg. Values 63.52 1.64 53.30 156.33 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 17.51 63.25 53.30 322.60 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4670 definition: xcompl = 1 - (RELH_avg/100) TdC = 7.9468 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 = 0.6568 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3432 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.9981 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 = 9.3247 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 4.3043 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.136 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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