Detailed Weather Data for Project: HEYB

Date Time TAIR WSPD RELH SRAD 06Nov2017 8 a.m. 50.45 6.40 79.17 19.20 06Nov2017 9 a.m. 50.56 7.30 77.97 41.00 06Nov2017 10 a.m. 49.93 7.80 76.84 60.90 06Nov2017 11 a.m. 49.60 8.00 79.14 104.20 06Nov2017 12 p.m. 50.05 7.10 78.26 109.20 06Nov2017 1 p.m. 50.52 7.30 77.79 126.30 06Nov2017 2 p.m. 51.30 7.70 75.52 128.10 06Nov2017 3 p.m. 51.66 8.20 73.69 104.00 06Nov2017 4 p.m. 51.66 8.60 72.76 77.80 06Nov2017 5 p.m. 50.83 9.20 71.36 26.80 06Nov2017 6 p.m. 49.30 9.70 74.63 0.00 06Nov2017 7 p.m. 47.39 9.70 70.20 0.00 06Nov2017 8 p.m. 46.90 8.10 81.03 0.00 06Nov2017 9 p.m. 46.02 7.80 82.67 0.00 06Nov2017 10 p.m. 45.36 7.10 83.86 0.00 06Nov2017 11 p.m. 45.14 6.80 84.05 0.00 07Nov2017 12 a.m. 44.91 5.90 84.38 0.00 07Nov2017 1 a.m. 44.46 6.60 86.85 0.00 07Nov2017 2 a.m. 44.04 6.10 88.88 0.00 07Nov2017 3 a.m. 44.24 5.70 87.96 0.00 07Nov2017 4 a.m. 44.46 7.80 90.54 0.00 07Nov2017 5 a.m. 44.15 10.20 93.39 0.00 07Nov2017 6 a.m. 44.06 10.30 92.19 0.00 07Nov2017 7 a.m. 43.90 7.90 91.28 0.00 Accuml. Values 1140.87 187.30 1954.41 797.50 Num. Valid Values 24 24 24 24 Avg. Values 47.54 7.80 81.43 33.23 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 8.63 301.37 81.43 68.57 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1857 definition: xcompl = 1 - (RELH_avg/100) TdC = 5.6398 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 = 0.5352 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4648 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.3473 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 = 2.0807 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.4658 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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