Detailed Weather Data for Project: TENK

Date Time TAIR WSPD RELH SRAD 03Mar2018 8 a.m. 45.23 10.40 60.25 124.50 03Mar2018 9 a.m. 49.46 12.75 55.67 319.00 03Mar2018 10 a.m. 53.19 14.32 51.75 519.75 03Mar2018 11 a.m. 56.96 13.20 47.67 695.67 03Mar2018 12 p.m. 60.48 13.03 44.25 768.00 03Mar2018 1 p.m. 62.00 13.20 43.00 592.00 03Mar2018 2 p.m. 64.98 10.96 41.25 755.50 03Mar2018 3 p.m. 65.66 9.17 40.00 657.75 03Mar2018 4 p.m. 65.57 10.40 40.00 495.00 03Mar2018 5 p.m. 64.94 9.34 39.50 296.50 03Mar2018 6 p.m. 61.70 4.92 44.00 24.00 03Mar2018 7 p.m. 58.64 6.71 47.00 0.00 03Mar2018 8 p.m. 57.20 7.27 46.00 0.00 03Mar2018 9 p.m. 55.22 7.23 46.67 0.00 03Mar2018 10 p.m. 54.08 8.57 47.33 0.00 03Mar2018 11 p.m. 52.16 8.95 51.00 0.00 04Mar2018 12 a.m. 51.48 10.51 53.25 0.00 04Mar2018 1 a.m. 52.29 10.96 52.25 0.00 04Mar2018 2 a.m. 52.11 11.69 52.75 0.00 04Mar2018 3 a.m. 51.62 10.29 53.67 0.00 04Mar2018 4 a.m. 51.44 11.35 54.75 0.00 04Mar2018 5 a.m. 50.54 12.08 59.00 0.00 04Mar2018 6 a.m. 49.86 11.24 63.50 0.00 04Mar2018 7 a.m. 48.65 12.19 69.00 3.00 Accuml. Values 1335.46 250.73 1203.51 5250.67 Num. Valid Values 24 24 24 24 Avg. Values 55.64 10.45 50.15 218.78 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 13.14 403.42 50.15 451.45 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4985 definition: xcompl = 1 - (RELH_avg/100) TdC = 2.9768 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 = 0.5995 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4005 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.4439 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 = 7.5555 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 9.4243 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.253 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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