Detailed Weather Data for Project: TENK

Date Time TAIR WSPD RELH SRAD 06Dec2017 8 a.m. 26.06 1.85 69.50 25.75 06Dec2017 9 a.m. 33.56 1.12 62.33 183.00 06Dec2017 10 a.m. 40.59 4.08 44.75 364.25 06Dec2017 11 a.m. 43.82 5.37 39.00 480.00 06Dec2017 12 p.m. 48.20 4.03 35.75 554.50 06Dec2017 1 p.m. 51.86 4.85 33.33 563.33 06Dec2017 2 p.m. 53.06 7.77 30.25 501.50 06Dec2017 3 p.m. 53.64 6.77 28.25 385.75 06Dec2017 4 p.m. 52.83 5.87 30.00 210.50 06Dec2017 5 p.m. 49.82 5.03 34.00 61.75 06Dec2017 6 p.m. 41.18 0.67 50.00 0.00 06Dec2017 7 p.m. 35.24 1.12 59.00 0.00 06Dec2017 8 p.m. 34.43 0.78 64.00 0.00 06Dec2017 9 p.m. 33.20 1.04 68.00 0.00 06Dec2017 10 p.m. 33.84 2.13 67.00 0.00 06Dec2017 11 p.m. 30.56 0.89 72.00 0.00 07Dec2017 12 a.m. 28.18 0.78 77.50 0.00 07Dec2017 1 a.m. 26.15 1.45 82.25 0.00 07Dec2017 2 a.m. 25.97 1.29 83.25 0.00 07Dec2017 3 a.m. 28.70 2.01 77.00 0.00 07Dec2017 4 a.m. 30.83 4.92 74.50 0.00 07Dec2017 5 a.m. 29.21 6.71 69.50 0.00 07Dec2017 6 a.m. 26.69 5.65 61.25 0.00 07Dec2017 7 a.m. 25.43 6.26 65.00 0.00 Accuml. Values 883.05 82.44 1377.41 3330.33 Num. Valid Values 24 24 24 24 Avg. Values 36.79 3.43 57.39 138.76 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 2.66 132.65 57.39 286.34 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4261 definition: xcompl = 1 - (RELH_avg/100) TdC = -4.9016 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 = 0.4446 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5554 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.7695 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 = 3.1691 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.2204 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.080 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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