Detailed Weather Data for Project: COUN

Date Time TAIR WSPD RELH SRAD 06Nov2017 8 a.m. 32.50 8.00 78.55 19.60 06Nov2017 9 a.m. 32.61 7.60 76.55 138.30 06Nov2017 10 a.m. 35.26 6.10 67.80 244.40 06Nov2017 11 a.m. 37.69 6.90 60.94 485.50 06Nov2017 12 p.m. 40.66 6.50 52.94 572.00 06Nov2017 1 p.m. 43.54 6.30 46.81 557.60 06Nov2017 2 p.m. 46.11 4.80 43.30 512.60 06Nov2017 3 p.m. 46.71 7.00 42.93 404.20 06Nov2017 4 p.m. 46.69 8.00 42.88 253.60 06Nov2017 5 p.m. 46.51 8.30 44.20 65.80 06Nov2017 6 p.m. 44.17 7.30 50.92 0.10 06Nov2017 7 p.m. 41.23 4.70 46.54 0.00 06Nov2017 8 p.m. 40.42 3.60 60.84 0.00 06Nov2017 9 p.m. 39.76 2.10 62.86 0.00 06Nov2017 10 p.m. 39.81 4.00 64.87 0.00 06Nov2017 11 p.m. 38.52 6.20 68.51 0.00 07Nov2017 12 a.m. 37.40 7.60 70.96 0.00 07Nov2017 1 a.m. 38.50 4.90 72.40 0.00 07Nov2017 2 a.m. 39.67 3.30 72.01 0.00 07Nov2017 3 a.m. 39.67 1.30 71.58 0.00 07Nov2017 4 a.m. 38.64 3.40 70.91 0.00 07Nov2017 5 a.m. 37.85 7.20 70.13 0.00 07Nov2017 6 a.m. 37.00 5.10 72.03 0.00 07Nov2017 7 a.m. 35.55 3.80 74.95 0.00 Accuml. Values 956.46 134.00 1486.41 3253.70 Num. Valid Values 24 24 24 24 Avg. Values 39.85 5.58 61.93 135.57 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.36 215.61 61.93 279.75 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3807 definition: xcompl = 1 - (RELH_avg/100) TdC = -2.2593 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 = 0.4708 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5292 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.7674 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 = 3.1805 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.8935 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.093 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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