Detailed Weather Data for Project: DENI

Date Time TAIR WSPD RELH SRAD 30Dec2017 8 a.m. 41.76 6.31 100.43 5.00 30Dec2017 9 a.m. 42.42 2.60 97.50 38.00 30Dec2017 10 a.m. 43.52 6.19 89.32 94.00 30Dec2017 11 a.m. 42.96 12.07 81.75 127.00 30Dec2017 12 p.m. 36.59 17.20 83.03 94.00 30Dec2017 1 p.m. 34.07 15.13 84.80 95.00 30Dec2017 2 p.m. 32.20 14.73 85.97 115.00 30Dec2017 3 p.m. 32.09 10.79 85.10 125.00 30Dec2017 4 p.m. 32.41 9.52 82.78 77.00 30Dec2017 5 p.m. 31.21 9.91 82.91 18.00 30Dec2017 6 p.m. 30.43 8.74 83.33 1.00 30Dec2017 7 p.m. 23.97 9.99 42.13 0.00 30Dec2017 8 p.m. 29.44 7.76 81.38 0.00 30Dec2017 9 p.m. 29.44 6.83 80.83 1.00 30Dec2017 10 p.m. 29.79 4.23 79.73 0.00 30Dec2017 11 p.m. 29.12 6.68 78.21 0.00 31Dec2017 12 a.m. 29.01 5.64 77.96 0.00 31Dec2017 1 a.m. 29.34 6.31 77.41 0.00 31Dec2017 2 a.m. 28.90 9.60 78.27 0.00 31Dec2017 3 a.m. 28.35 8.80 80.28 0.00 31Dec2017 4 a.m. 28.69 9.98 90.29 0.00 31Dec2017 5 a.m. 26.71 12.65 93.30 0.00 31Dec2017 6 a.m. 26.04 12.88 84.68 0.00 31Dec2017 7 a.m. 26.15 12.20 84.43 0.00 Accuml. Values 764.62 226.74 1985.82 790.00 Num. Valid Values 24 24 24 24 Avg. Values 31.86 9.45 82.74 32.92 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -0.08 364.82 82.74 67.92 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1726 definition: xcompl = 1 - (RELH_avg/100) TdC = -2.6680 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 = 0.4023 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5977 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.4402 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 = 1.0592 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.5547 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.030 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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