Detailed Weather Data for Project: TENK

Date Time TAIR WSPD RELH SRAD 05Mar2018 8 a.m. 57.33 7.72 90.75 78.50 05Mar2018 9 a.m. 61.52 9.25 84.00 97.67 05Mar2018 10 a.m. 58.37 13.42 60.25 453.50 05Mar2018 11 a.m. 58.16 11.04 47.67 681.67 05Mar2018 12 p.m. 61.25 12.02 35.00 790.75 05Mar2018 1 p.m. 61.88 11.04 32.67 825.67 05Mar2018 2 p.m. 61.56 11.69 27.50 792.25 05Mar2018 3 p.m. 60.93 11.30 27.25 685.00 05Mar2018 4 p.m. 60.71 11.46 17.50 494.75 05Mar2018 5 p.m. 58.91 9.17 17.00 215.75 05Mar2018 6 p.m. 56.66 6.49 19.00 36.00 05Mar2018 7 p.m. 53.24 4.25 23.00 0.00 05Mar2018 8 p.m. 51.08 3.36 25.00 0.00 05Mar2018 9 p.m. 49.37 2.46 26.50 0.00 05Mar2018 10 p.m. 42.92 0.89 40.33 0.00 05Mar2018 11 p.m. 39.38 1.29 51.75 0.00 06Mar2018 12 a.m. 37.44 0.78 54.50 0.00 06Mar2018 1 a.m. 35.06 1.06 59.75 0.00 06Mar2018 2 a.m. 33.66 1.06 61.25 0.00 06Mar2018 3 a.m. 32.78 0.75 61.33 0.00 06Mar2018 4 a.m. 32.27 1.40 65.25 0.00 06Mar2018 5 a.m. 36.86 3.36 48.00 0.00 06Mar2018 6 a.m. 38.70 3.63 45.00 0.00 06Mar2018 7 a.m. 37.94 3.47 46.50 7.00 Accuml. Values 1177.98 142.36 1066.75 5158.51 Num. Valid Values 24 24 24 24 Avg. Values 49.08 5.93 44.45 214.94 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 9.49 229.06 44.45 443.53 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5555 definition: xcompl = 1 - (RELH_avg/100) TdC = -2.0960 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 = 0.5478 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4522 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.0498 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 = 6.6471 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 5.7419 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.190 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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