Detailed Weather Data for Project: GSAL

Date Time TAIR WSPD RELH SRAD 04Nov2017 8 a.m. 48.45 1.90 100.09 0.00 04Nov2017 9 a.m. 49.51 1.40 100.09 2.60 04Nov2017 10 a.m. 50.22 2.00 100.09 35.50 04Nov2017 11 a.m. 50.74 2.20 100.09 56.90 04Nov2017 12 p.m. 51.58 2.10 99.49 132.00 04Nov2017 1 p.m. 52.86 3.10 95.69 217.20 04Nov2017 2 p.m. 53.64 5.10 87.79 408.70 04Nov2017 3 p.m. 54.48 6.10 84.42 558.20 04Nov2017 4 p.m. 57.72 3.10 75.34 478.30 04Nov2017 5 p.m. 58.73 4.10 74.43 208.60 04Nov2017 6 p.m. 61.57 2.80 68.00 114.60 04Nov2017 7 p.m. 58.69 2.20 75.52 4.30 04Nov2017 8 p.m. 49.71 7.20 68.65 0.00 04Nov2017 9 p.m. 54.95 2.90 85.17 0.00 04Nov2017 10 p.m. 53.15 3.10 89.35 0.00 04Nov2017 11 p.m. 51.93 3.80 92.54 0.00 05Nov2017 12 a.m. 50.38 2.30 97.48 0.00 05Nov2017 1 a.m. 50.20 2.90 98.77 0.00 05Nov2017 2 a.m. 49.24 1.30 99.06 0.00 05Nov2017 3 a.m. 48.65 1.50 98.72 0.00 05Nov2017 4 a.m. 45.70 1.00 98.54 0.00 05Nov2017 5 a.m. 46.49 1.60 98.77 0.00 05Nov2017 6 a.m. 46.92 7.00 96.61 0.00 05Nov2017 7 a.m. 46.09 6.10 97.44 0.00 Accuml. Values 1241.62 76.80 2182.14 2216.90 Num. Valid Values 24 24 24 24 Avg. Values 51.73 3.20 90.92 92.37 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 10.96 123.57 90.92 190.61 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0908 definition: xcompl = 1 - (RELH_avg/100) TdC = 9.5163 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 = 0.5691 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4309 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.0189 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 = 1.2088 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.9197 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.038 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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