Detailed Weather Data for Project: DENI

Date Time TAIR WSPD RELH SRAD 07Nov2017 8 a.m. 49.44 9.40 80.15 31.00 07Nov2017 9 a.m. 50.00 11.66 79.37 63.00 07Nov2017 10 a.m. 50.56 12.49 79.18 139.00 07Nov2017 11 a.m. 50.77 12.95 77.59 210.00 07Nov2017 12 p.m. 51.42 15.81 77.35 222.00 07Nov2017 1 p.m. 52.97 14.51 76.43 522.00 07Nov2017 2 p.m. 53.29 15.74 69.90 375.00 07Nov2017 3 p.m. 52.97 18.93 71.67 100.00 07Nov2017 4 p.m. 52.65 15.32 75.70 45.00 07Nov2017 5 p.m. 50.32 14.64 77.40 11.00 07Nov2017 6 p.m. 50.43 14.64 78.82 0.00 07Nov2017 7 p.m. 48.99 11.64 79.54 0.00 07Nov2017 8 p.m. 48.34 14.44 81.20 0.00 07Nov2017 9 p.m. 47.91 12.03 82.11 0.00 07Nov2017 10 p.m. 47.25 14.74 80.28 0.00 07Nov2017 11 p.m. 46.90 13.36 83.14 1.00 08Nov2017 12 a.m. 47.14 13.91 83.15 0.00 08Nov2017 1 a.m. 46.92 9.29 83.33 0.00 08Nov2017 2 a.m. 47.03 9.63 83.20 1.00 08Nov2017 3 a.m. 46.90 12.10 82.35 0.00 08Nov2017 4 a.m. 45.72 12.40 82.66 1.00 08Nov2017 5 a.m. 46.49 12.60 84.43 0.00 08Nov2017 6 a.m. 45.72 11.43 86.75 0.00 08Nov2017 7 a.m. 44.06 8.62 90.66 1.00 Accuml. Values 1174.21 312.28 1926.36 1722.00 Num. Valid Values 24 24 24 24 Avg. Values 48.93 13.01 80.27 71.75 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 9.40 502.46 80.27 148.06 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1973 definition: xcompl = 1 - (RELH_avg/100) TdC = 6.1901 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 = 0.5465 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4535 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.4983 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 = 2.3253 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.9446 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.081 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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