Detailed Weather Data for Project: BIRC

Date Time TAIR WSPD RELH SRAD 04Nov2017 8 a.m. 47.88 1.56 96.77 0.76 04Nov2017 9 a.m. 48.47 1.23 97.05 25.13 04Nov2017 10 a.m. 49.39 1.30 97.15 47.80 04Nov2017 11 a.m. 50.00 4.01 97.19 79.37 04Nov2017 12 p.m. 51.17 1.22 97.08 87.53 04Nov2017 1 p.m. 52.63 1.37 96.47 120.44 04Nov2017 2 p.m. 55.36 0.83 90.25 189.17 04Nov2017 3 p.m. 58.15 1.75 79.71 250.63 04Nov2017 4 p.m. 60.85 1.37 70.81 327.17 04Nov2017 5 p.m. 62.08 1.02 67.38 182.79 04Nov2017 6 p.m. 60.48 2.60 72.08 53.88 04Nov2017 7 p.m. 57.81 2.90 79.24 5.40 04Nov2017 8 p.m. 51.39 4.00 69.51 0.10 04Nov2017 9 p.m. 53.65 1.51 89.20 0.10 04Nov2017 10 p.m. 52.43 0.69 91.64 0.10 04Nov2017 11 p.m. 51.66 2.26 93.65 0.10 05Nov2017 12 a.m. 51.31 0.51 95.24 0.11 05Nov2017 1 a.m. 50.92 0.59 95.73 0.11 05Nov2017 2 a.m. 49.98 0.43 96.02 0.11 05Nov2017 3 a.m. 51.37 0.71 96.49 0.11 05Nov2017 4 a.m. 54.81 0.97 96.75 0.10 05Nov2017 5 a.m. 59.74 1.52 96.63 0.10 05Nov2017 6 a.m. 63.05 3.36 92.38 0.10 05Nov2017 7 a.m. 63.84 3.08 89.17 1.35 Accuml. Values 1308.41 40.79 2143.59 1372.56 Num. Valid Values 24 24 24 24 Avg. Values 54.52 1.70 89.32 57.19 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 12.51 65.63 89.32 118.01 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1068 definition: xcompl = 1 - (RELH_avg/100) TdC = 10.7816 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 = 0.5908 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4092 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.2425 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 = 1.5667 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.9060 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.020 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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