Detailed Weather Data for Project: TENK

Date Time TAIR WSPD RELH SRAD 29Dec2017 8 a.m. 28.04 7.21 50.25 4.50 29Dec2017 9 a.m. 28.28 7.68 51.67 25.67 29Dec2017 10 a.m. 29.71 8.61 50.75 73.50 29Dec2017 11 a.m. 32.36 8.13 50.00 138.67 29Dec2017 12 p.m. 34.61 9.28 50.00 170.75 29Dec2017 1 p.m. 38.06 8.87 49.00 294.33 29Dec2017 2 p.m. 40.05 8.39 48.75 235.00 29Dec2017 3 p.m. 40.52 5.52 49.67 116.33 29Dec2017 4 p.m. 41.67 6.77 52.25 93.50 29Dec2017 5 p.m. 41.49 6.65 61.25 61.75 29Dec2017 6 p.m. 39.92 5.37 68.00 0.00 29Dec2017 7 p.m. 39.92 5.14 70.00 0.00 29Dec2017 8 p.m. 39.56 3.36 70.50 0.00 29Dec2017 9 p.m. 38.84 2.09 71.67 0.00 29Dec2017 10 p.m. 38.78 1.34 72.67 0.00 29Dec2017 11 p.m. 37.58 0.00 78.00 0.00 30Dec2017 12 a.m. 37.26 1.17 79.75 0.00 30Dec2017 1 a.m. 37.04 0.73 81.50 0.00 30Dec2017 2 a.m. 36.77 1.12 83.50 0.00 30Dec2017 3 a.m. 36.80 2.01 84.33 0.00 30Dec2017 4 a.m. 37.58 2.01 78.25 0.00 30Dec2017 5 a.m. 37.13 3.02 77.50 0.00 30Dec2017 6 a.m. 36.77 3.24 78.50 0.00 30Dec2017 7 a.m. 36.50 3.91 79.50 0.00 Accuml. Values 885.24 111.62 1587.26 1214.00 Num. Valid Values 24 23 24 24 Avg. Values 36.88 4.85 66.14 50.58 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 2.71 187.41 66.14 104.38 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3386 definition: xcompl = 1 - (RELH_avg/100) TdC = -2.9389 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 = 0.4454 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5546 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.0763 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 = 2.5169 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.1707 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.046 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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