Detailed Weather Data for Project: FALL

Date Time TAIR WSPD RELH SRAD 29Dec2017 8 a.m. 21.92 2.10 84.55 0.00 29Dec2017 9 a.m. 24.78 4.80 82.08 1.20 29Dec2017 10 a.m. 28.71 6.80 73.83 24.20 29Dec2017 11 a.m. 31.44 7.30 69.49 61.80 29Dec2017 12 p.m. 35.08 11.50 62.73 122.70 29Dec2017 1 p.m. 37.94 13.70 63.03 128.30 29Dec2017 2 p.m. 39.20 16.60 64.94 118.90 29Dec2017 3 p.m. 38.77 14.70 70.13 55.50 29Dec2017 4 p.m. 38.46 11.20 73.10 17.90 29Dec2017 5 p.m. 38.08 7.10 75.72 0.00 29Dec2017 6 p.m. 37.74 2.70 76.71 0.00 29Dec2017 7 p.m. 16.99 7.70 57.82 0.00 29Dec2017 8 p.m. 36.68 2.30 80.34 0.00 29Dec2017 9 p.m. 36.91 2.00 78.19 0.00 29Dec2017 10 p.m. 36.28 1.50 79.71 0.00 29Dec2017 11 p.m. 35.73 5.50 81.85 0.00 30Dec2017 12 a.m. 35.26 11.40 79.52 0.00 30Dec2017 1 a.m. 28.20 15.10 90.15 0.00 30Dec2017 2 a.m. 24.60 14.40 91.84 0.00 30Dec2017 3 a.m. 23.14 17.10 89.91 0.00 30Dec2017 4 a.m. 21.54 16.00 89.09 0.00 30Dec2017 5 a.m. 19.63 15.70 83.31 0.00 30Dec2017 6 a.m. 18.57 13.70 78.54 0.00 30Dec2017 7 a.m. 16.72 14.20 78.93 0.00 Accuml. Values 722.39 235.10 1855.51 530.50 Num. Valid Values 24 24 24 24 Avg. Values 30.10 9.80 77.31 22.10 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -1.06 378.28 77.31 45.61 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2269 definition: xcompl = 1 - (RELH_avg/100) TdC = -4.5103 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 = 0.3873 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.6127 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.6398 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 = 1.2898 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.8978 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.036 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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