Detailed Weather Data for Project: KEMP

Date Time TAIR WSPD RELH SRAD 02Jan2018 8 a.m. 8.37 5.31 71.27 0.00 02Jan2018 9 a.m. 11.79 5.13 69.20 32.00 02Jan2018 10 a.m. 18.05 3.52 57.35 177.00 02Jan2018 11 a.m. 21.24 2.53 51.85 351.00 02Jan2018 12 p.m. 24.85 3.42 43.91 400.00 02Jan2018 1 p.m. 26.06 3.18 40.43 621.00 02Jan2018 2 p.m. 28.81 4.12 36.52 642.00 02Jan2018 3 p.m. 28.04 4.86 36.27 577.00 02Jan2018 4 p.m. 28.47 4.92 35.60 459.00 02Jan2018 5 p.m. 28.58 3.97 35.05 289.00 02Jan2018 6 p.m. 25.84 3.97 39.33 92.00 02Jan2018 7 p.m. 45.52 1.32 36.39 0.00 02Jan2018 8 p.m. 23.76 6.78 48.42 0.00 02Jan2018 9 p.m. 22.42 6.22 51.66 0.00 02Jan2018 10 p.m. 22.87 7.04 53.07 0.00 02Jan2018 11 p.m. 21.11 7.42 53.31 0.00 03Jan2018 12 a.m. 20.23 8.02 55.02 0.00 03Jan2018 1 a.m. 20.46 9.90 64.79 0.00 03Jan2018 2 a.m. 18.37 8.35 67.66 0.00 03Jan2018 3 a.m. 17.38 5.48 62.71 0.00 03Jan2018 4 a.m. 16.72 4.54 66.51 0.00 03Jan2018 5 a.m. 20.34 4.62 65.71 0.00 03Jan2018 6 a.m. 21.78 7.40 54.47 0.00 03Jan2018 7 a.m. 21.00 3.12 59.11 0.00 Accuml. Values 542.06 125.14 1255.61 3640.00 Num. Valid Values 24 24 24 24 Avg. Values 22.59 5.21 52.32 151.67 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -5.23 201.35 52.32 312.97 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4768 definition: xcompl = 1 - (RELH_avg/100) TdC = -13.5047 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 = 0.3243 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.6757 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.7515 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 = 1.9973 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.8454 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.071 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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