Detailed Weather Data for Project: BIRC

Date Time TAIR WSPD RELH SRAD 06Nov2017 8 a.m. 43.25 7.77 75.93 12.99 06Nov2017 9 a.m. 43.11 7.17 78.76 45.47 06Nov2017 10 a.m. 43.38 6.84 78.88 115.36 06Nov2017 11 a.m. 44.62 6.83 74.74 0.12 06Nov2017 12 p.m. 44.92 7.33 69.75 0.12 06Nov2017 1 p.m. 45.01 5.46 67.76 0.11 06Nov2017 2 p.m. 44.11 5.50 69.21 0.11 06Nov2017 3 p.m. 42.87 5.84 74.56 0.12 06Nov2017 4 p.m. 41.70 5.17 80.30 0.11 06Nov2017 5 p.m. 40.42 4.75 84.65 0.11 06Nov2017 6 p.m. 40.23 4.21 85.22 0.11 06Nov2017 7 p.m. 42.80 8.30 69.33 0.12 06Nov2017 8 p.m. 40.12 4.83 85.34 0.11 06Nov2017 9 p.m. 40.10 4.53 86.52 0.11 06Nov2017 10 p.m. 39.90 4.78 87.03 0.11 06Nov2017 11 p.m. 39.76 4.71 87.28 0.11 07Nov2017 12 a.m. 39.69 3.68 89.36 0.10 07Nov2017 1 a.m. 39.51 5.53 91.35 0.11 07Nov2017 2 a.m. 39.92 4.38 90.59 0.11 07Nov2017 3 a.m. 39.88 5.26 91.22 0.11 07Nov2017 4 a.m. 39.65 4.87 92.43 0.11 07Nov2017 5 a.m. 39.78 5.05 91.21 0.11 07Nov2017 6 a.m. 39.47 5.51 92.18 0.11 07Nov2017 7 a.m. 39.29 6.73 92.38 0.44 Accuml. Values 993.49 135.03 1985.98 176.49 Num. Valid Values 24 24 24 24 Avg. Values 41.40 5.63 82.75 7.35 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 5.22 217.26 82.75 15.17 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1725 definition: xcompl = 1 - (RELH_avg/100) TdC = 2.5232 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 = 0.4839 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5161 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.8826 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 = 1.5370 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.5328 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.014 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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