Detailed Weather Data for Project: HUGO

Date Time TAIR WSPD RELH SRAD 29Dec2017 8 a.m. 34.50 4.98 57.01 5190.00 29Dec2017 9 a.m. 35.04 6.74 57.69 5242.00 29Dec2017 10 a.m. 35.92 7.61 56.71 5195.00 29Dec2017 11 a.m. 37.90 7.00 54.51 4131.00 29Dec2017 12 p.m. 41.41 7.86 49.20 4519.00 29Dec2017 1 p.m. 42.85 11.68 52.37 5946.00 29Dec2017 2 p.m. 44.06 8.76 53.05 4754.00 29Dec2017 3 p.m. 44.94 10.19 51.09 1264.00 29Dec2017 4 p.m. 45.27 7.44 54.82 896.00 29Dec2017 5 p.m. 45.16 5.33 56.35 366.00 29Dec2017 6 p.m. 45.05 5.94 59.88 582.00 29Dec2017 7 p.m. 35.04 13.58 85.52 0.00 29Dec2017 8 p.m. 44.94 4.94 65.32 275.00 29Dec2017 9 p.m. 44.17 6.03 85.40 287.00 29Dec2017 10 p.m. 43.29 3.66 94.31 231.00 29Dec2017 11 p.m. 42.62 2.18 100.54 116.00 30Dec2017 12 a.m. 42.19 3.00 100.54 4.00 30Dec2017 1 a.m. 41.76 2.94 100.49 1.00 30Dec2017 2 a.m. 41.63 2.71 100.48 0.00 30Dec2017 3 a.m. 41.76 1.93 100.48 0.00 30Dec2017 4 a.m. 41.52 2.93 100.54 0.00 30Dec2017 5 a.m. 41.54 1.27 100.43 0.00 30Dec2017 6 a.m. 41.41 5.68 100.54 0.00 30Dec2017 7 a.m. 41.52 7.92 97.55 0.00 Accuml. Values 995.50 142.30 1834.82 38999.00 Num. Valid Values 24 24 24 24 Avg. Values 41.48 5.93 76.45 1624.96 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 5.27 228.96 76.45 3353.13 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2355 definition: xcompl = 1 - (RELH_avg/100) TdC = 1.4853 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 = 0.4846 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5154 definition: del_lambda2 = 1 - del_lambda1 Qn = 73.3606 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 = 2.0920 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.0755 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 1.442 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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