Detailed Weather Data for Project: TENK

Date Time TAIR WSPD RELH SRAD 02Dec2017 8 a.m. 50.99 3.52 54.00 35.50 02Dec2017 9 a.m. 54.56 5.29 48.67 180.00 02Dec2017 10 a.m. 58.64 8.44 45.75 335.50 02Dec2017 11 a.m. 63.14 5.97 45.67 450.00 02Dec2017 12 p.m. 65.48 7.49 46.50 518.00 02Dec2017 1 p.m. 67.94 8.13 46.33 526.67 02Dec2017 2 p.m. 69.12 5.54 46.00 470.25 02Dec2017 3 p.m. 68.99 4.53 46.50 337.75 02Dec2017 4 p.m. 68.72 3.91 47.75 198.00 02Dec2017 5 p.m. 64.76 1.68 54.25 36.75 02Dec2017 6 p.m. 55.22 0.89 73.00 0.00 02Dec2017 7 p.m. 57.02 3.13 71.00 0.00 02Dec2017 8 p.m. 62.78 6.04 54.00 0.00 02Dec2017 9 p.m. 61.25 6.93 56.00 0.00 02Dec2017 10 p.m. 60.02 6.19 58.33 0.00 02Dec2017 11 p.m. 59.31 4.87 61.00 0.00 03Dec2017 12 a.m. 57.96 5.70 66.00 0.00 03Dec2017 1 a.m. 59.54 5.54 67.75 0.00 03Dec2017 2 a.m. 59.49 6.88 68.00 0.00 03Dec2017 3 a.m. 57.92 5.59 70.67 0.00 03Dec2017 4 a.m. 57.02 6.93 73.00 0.00 03Dec2017 5 a.m. 57.02 4.92 74.00 0.00 03Dec2017 6 a.m. 56.39 5.37 76.25 0.00 03Dec2017 7 a.m. 57.20 7.05 76.00 0.00 Accuml. Values 1450.48 130.53 1426.42 3088.42 Num. Valid Values 24 24 24 24 Avg. Values 60.44 5.44 59.43 128.68 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 15.80 210.02 59.43 265.54 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4057 definition: xcompl = 1 - (RELH_avg/100) TdC = 7.9775 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 = 0.6350 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3650 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.1398 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 = 7.2404 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 5.8753 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.138 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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