Detailed Weather Data for Project: CHOU

Date Time TAIR WSPD RELH SRAD 06Nov2017 8 a.m. 51.85 4.80 94.78 4.90 06Nov2017 9 a.m. 52.74 3.80 90.34 22.40 06Nov2017 10 a.m. 51.46 4.40 98.69 35.70 06Nov2017 11 a.m. 50.97 5.70 100.38 56.90 06Nov2017 12 p.m. 50.07 6.90 100.56 68.60 06Nov2017 1 p.m. 49.48 7.50 100.53 75.10 06Nov2017 2 p.m. 48.74 7.30 100.49 52.80 06Nov2017 3 p.m. 47.98 8.80 100.46 45.70 06Nov2017 4 p.m. 47.93 7.50 100.44 16.20 06Nov2017 5 p.m. 47.25 8.40 100.42 1.40 06Nov2017 6 p.m. 45.18 8.50 100.30 0.00 06Nov2017 7 p.m. 43.47 7.40 99.13 0.00 06Nov2017 8 p.m. 43.72 7.40 100.31 0.00 06Nov2017 9 p.m. 43.25 6.90 100.25 0.00 06Nov2017 10 p.m. 43.03 6.30 100.27 0.00 06Nov2017 11 p.m. 43.11 5.90 100.18 0.00 07Nov2017 12 a.m. 43.20 6.30 100.16 0.00 07Nov2017 1 a.m. 42.69 7.30 100.08 0.00 07Nov2017 2 a.m. 42.39 6.10 100.03 0.00 07Nov2017 3 a.m. 42.94 5.40 100.07 0.00 07Nov2017 4 a.m. 43.29 6.30 100.08 0.00 07Nov2017 5 a.m. 43.32 7.20 100.21 0.00 07Nov2017 6 a.m. 42.91 7.90 100.19 0.00 07Nov2017 7 a.m. 42.82 7.70 100.21 0.00 Accuml. Values 1103.77 161.70 2388.56 379.70 Num. Valid Values 24 24 24 24 Avg. Values 45.99 6.74 99.52 15.82 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 7.77 260.18 99.52 32.65 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0048 definition: xcompl = 1 - (RELH_avg/100) TdC = 7.6989 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 = 0.5225 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4775 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.7090 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 = 0.0530 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.0885 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.000 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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