Detailed Weather Data for Project: KAWL

Date Time TAIR WSPD RELH SRAD 06Nov2017 8 a.m. 42.87 18.10 85.50 3.60 06Nov2017 9 a.m. 42.89 16.00 85.10 39.90 06Nov2017 10 a.m. 43.32 16.20 83.28 80.50 06Nov2017 11 a.m. 43.38 15.70 81.28 116.00 06Nov2017 12 p.m. 43.41 13.80 80.24 160.50 06Nov2017 1 p.m. 43.45 11.60 79.86 147.00 06Nov2017 2 p.m. 43.79 11.30 81.31 137.30 06Nov2017 3 p.m. 44.62 10.50 82.63 106.70 06Nov2017 4 p.m. 44.13 11.40 83.90 47.20 06Nov2017 5 p.m. 43.65 10.30 84.80 2.50 06Nov2017 6 p.m. 43.72 11.70 83.96 0.00 06Nov2017 7 p.m. 45.37 21.00 69.29 0.00 06Nov2017 8 p.m. 43.47 11.50 84.13 0.00 06Nov2017 9 p.m. 43.36 10.90 83.34 0.00 06Nov2017 10 p.m. 43.39 12.40 83.71 0.00 06Nov2017 11 p.m. 43.34 12.60 84.38 0.00 07Nov2017 12 a.m. 43.27 10.70 84.92 0.00 07Nov2017 1 a.m. 43.02 9.60 86.64 0.00 07Nov2017 2 a.m. 43.38 13.60 87.88 0.00 07Nov2017 3 a.m. 43.25 14.60 89.00 0.00 07Nov2017 4 a.m. 43.18 14.10 91.24 0.00 07Nov2017 5 a.m. 43.05 15.20 92.51 0.00 07Nov2017 6 a.m. 43.09 17.80 92.33 0.00 07Nov2017 7 a.m. 43.20 18.20 93.31 0.00 Accuml. Values 1043.58 328.80 2034.54 841.20 Num. Valid Values 24 24 24 24 Avg. Values 43.48 13.70 84.77 35.05 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 6.38 529.04 84.77 72.33 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1523 definition: xcompl = 1 - (RELH_avg/100) TdC = 3.9946 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 = 0.5015 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4985 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.3360 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 = 1.4733 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.7483 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.047 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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