Detailed Weather Data for Project: ARBU

Date Time TAIR WSPD RELH SRAD 08Nov2017 8 a.m. 40.64 8.95 90.50 18.50 08Nov2017 9 a.m. 40.76 10.66 92.00 48.67 08Nov2017 10 a.m. 41.40 8.95 91.75 61.00 08Nov2017 11 a.m. 42.08 10.96 89.00 67.67 08Nov2017 12 p.m. 43.38 9.34 86.25 104.25 08Nov2017 1 p.m. 45.08 9.77 83.67 152.33 08Nov2017 2 p.m. 45.18 9.90 80.00 109.25 08Nov2017 3 p.m. 46.31 8.78 75.75 129.50 08Nov2017 4 p.m. 47.03 7.66 71.00 90.50 08Nov2017 5 p.m. 46.67 5.37 69.25 55.25 08Nov2017 6 p.m. 42.80 3.58 80.00 0.00 08Nov2017 7 p.m. 38.84 0.22 88.00 0.00 08Nov2017 8 p.m. 36.23 1.68 93.50 0.00 08Nov2017 9 p.m. 34.70 1.12 96.67 0.00 08Nov2017 10 p.m. 32.48 2.98 98.00 0.00 08Nov2017 11 p.m. 30.92 2.68 98.00 0.00 09Nov2017 12 a.m. 30.92 2.18 98.25 0.00 09Nov2017 1 a.m. 30.29 0.34 98.75 0.00 09Nov2017 2 a.m. 29.66 2.68 98.75 0.00 09Nov2017 3 a.m. 28.94 1.64 99.00 0.00 09Nov2017 4 a.m. 28.72 2.35 99.00 0.00 09Nov2017 5 a.m. 29.03 2.35 99.00 0.00 09Nov2017 6 a.m. 28.04 2.13 98.00 0.00 09Nov2017 7 a.m. 27.50 2.24 98.00 2.50 Accuml. Values 887.60 118.51 2172.09 839.42 Num. Valid Values 24 24 24 24 Avg. Values 36.98 4.94 90.50 34.98 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 2.77 190.68 90.50 72.17 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0950 definition: xcompl = 1 - (RELH_avg/100) TdC = 1.3431 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 = 0.4463 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5537 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.3760 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 = 0.7250 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.7332 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.009 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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