Detailed Weather Data for Project: CHOU

Date Time TAIR WSPD RELH SRAD 07Nov2017 8 a.m. 43.00 7.30 100.19 1.70 07Nov2017 9 a.m. 43.11 8.20 99.95 24.40 07Nov2017 10 a.m. 43.65 9.10 99.70 53.60 07Nov2017 11 a.m. 44.08 8.00 99.65 60.10 07Nov2017 12 p.m. 44.31 9.30 99.75 73.40 07Nov2017 1 p.m. 43.92 10.00 99.98 76.60 07Nov2017 2 p.m. 43.59 10.30 100.06 65.40 07Nov2017 3 p.m. 43.25 10.10 100.27 56.50 07Nov2017 4 p.m. 43.09 9.10 100.19 34.50 07Nov2017 5 p.m. 43.36 8.30 99.82 1.30 07Nov2017 6 p.m. 43.48 8.60 99.50 0.00 07Nov2017 7 p.m. 44.33 0.40 89.58 0.00 07Nov2017 8 p.m. 43.03 8.10 98.95 0.00 07Nov2017 9 p.m. 42.44 8.20 98.98 0.00 07Nov2017 10 p.m. 42.24 7.70 99.02 0.00 07Nov2017 11 p.m. 42.22 7.30 99.26 0.00 08Nov2017 12 a.m. 42.37 6.80 99.02 0.00 08Nov2017 1 a.m. 42.01 6.40 98.33 0.00 08Nov2017 2 a.m. 42.67 4.80 91.74 0.00 08Nov2017 3 a.m. 42.75 4.30 84.64 0.00 08Nov2017 4 a.m. 42.35 3.70 84.97 0.00 08Nov2017 5 a.m. 42.21 3.40 85.73 0.00 08Nov2017 6 a.m. 41.88 4.30 86.64 0.00 08Nov2017 7 a.m. 41.88 4.90 88.12 0.00 Accuml. Values 1031.21 168.60 2304.04 447.50 Num. Valid Values 24 24 24 24 Avg. Values 42.97 7.02 96.00 18.65 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 6.09 271.28 96.00 38.48 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0400 definition: xcompl = 1 - (RELH_avg/100) TdC = 5.4823 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 = 0.4972 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5028 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.6630 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 = 0.3910 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.5281 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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