Detailed Weather Data for Project: KEMP

Date Time TAIR WSPD RELH SRAD 03Dec2017 8 a.m. 51.55 1.12 68.08 0.00 03Dec2017 9 a.m. 54.52 1.61 60.51 43.00 03Dec2017 10 a.m. 59.68 2.90 63.01 266.00 03Dec2017 11 a.m. 66.94 8.89 62.52 481.00 03Dec2017 12 p.m. 67.82 18.05 65.21 713.00 03Dec2017 1 p.m. 69.57 17.59 61.97 601.00 03Dec2017 2 p.m. 71.89 18.27 56.23 594.00 03Dec2017 3 p.m. 70.12 18.92 58.98 527.00 03Dec2017 4 p.m. 71.44 20.48 56.91 395.00 03Dec2017 5 p.m. 72.41 19.46 52.50 226.00 03Dec2017 6 p.m. 70.45 15.65 58.00 40.00 03Dec2017 7 p.m. 61.99 16.38 32.91 0.00 03Dec2017 8 p.m. 66.61 14.35 65.82 0.00 03Dec2017 9 p.m. 66.38 16.11 69.24 0.00 03Dec2017 10 p.m. 63.43 20.16 76.51 0.00 03Dec2017 11 p.m. 63.19 16.62 77.24 0.00 04Dec2017 12 a.m. 61.99 16.60 79.99 0.00 04Dec2017 1 a.m. 60.69 14.68 82.62 0.00 04Dec2017 2 a.m. 60.78 12.60 83.10 0.00 04Dec2017 3 a.m. 59.79 16.34 86.27 0.00 04Dec2017 4 a.m. 60.12 19.21 87.62 0.00 04Dec2017 5 a.m. 60.57 19.22 87.50 1.00 04Dec2017 6 a.m. 60.46 21.35 88.29 1.00 04Dec2017 7 a.m. 60.13 13.11 88.79 1.00 Accuml. Values 1532.51 359.67 1669.82 3889.00 Num. Valid Values 24 24 24 24 Avg. Values 63.85 14.99 69.58 162.04 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 17.70 578.71 69.58 334.38 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3042 definition: xcompl = 1 - (RELH_avg/100) TdC = 12.1478 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 = 0.6591 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3409 definition: del_lambda2 = 1 - del_lambda1 Qn = 3.1719 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 = 6.0849 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 10.2802 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.220 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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