Detailed Weather Data for Project: TENK

Date Time TAIR WSPD RELH SRAD 02Jan2018 8 a.m. 14.72 2.91 52.25 5.75 02Jan2018 9 a.m. 14.90 4.70 52.00 28.00 02Jan2018 10 a.m. 16.93 3.36 48.25 134.25 02Jan2018 11 a.m. 18.32 2.68 44.00 166.00 02Jan2018 12 p.m. 20.39 2.18 40.50 254.25 02Jan2018 1 p.m. 21.62 2.24 37.33 192.67 02Jan2018 2 p.m. 22.19 2.57 33.75 214.00 02Jan2018 3 p.m. 23.41 3.08 34.25 258.50 02Jan2018 4 p.m. 22.91 2.85 33.50 137.75 02Jan2018 5 p.m. 22.24 2.24 37.25 53.00 02Jan2018 6 p.m. 21.56 2.01 43.00 0.00 02Jan2018 7 p.m. 21.38 0.67 45.00 0.00 02Jan2018 8 p.m. 20.66 0.89 54.00 0.00 02Jan2018 9 p.m. 18.50 1.45 58.00 0.00 02Jan2018 10 p.m. 15.26 1.79 64.00 0.00 02Jan2018 11 p.m. 14.18 2.40 64.75 0.00 03Jan2018 12 a.m. 11.98 0.73 76.50 0.00 03Jan2018 1 a.m. 13.15 1.57 72.00 0.00 03Jan2018 2 a.m. 13.73 1.73 69.25 0.00 03Jan2018 3 a.m. 10.94 1.94 80.33 0.00 03Jan2018 4 a.m. 9.73 1.90 84.75 0.00 03Jan2018 5 a.m. 12.47 1.12 76.00 0.00 03Jan2018 6 a.m. 13.69 0.84 70.75 0.00 03Jan2018 7 a.m. 14.27 2.01 69.00 0.00 Accuml. Values 409.13 49.86 1340.41 1444.17 Num. Valid Values 24 24 24 24 Avg. Values 17.05 2.08 55.85 60.17 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -8.31 80.22 55.85 124.17 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4415 definition: xcompl = 1 - (RELH_avg/100) TdC = -15.5660 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 = 0.2801 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7199 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.0376 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 = 1.4570 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.9089 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.025 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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