Detailed Weather Data for Project: HULA

Date Time TAIR WSPD RELH SRAD 06Nov2017 8 a.m. 40.66 8.50 80.92 15.00 06Nov2017 9 a.m. 41.16 8.40 77.02 82.60 06Nov2017 10 a.m. 40.95 7.10 75.49 80.80 06Nov2017 11 a.m. 40.60 7.30 75.22 114.10 06Nov2017 12 p.m. 40.06 7.50 76.21 159.60 06Nov2017 1 p.m. 40.59 6.30 77.62 151.60 06Nov2017 2 p.m. 40.24 7.40 83.35 113.20 06Nov2017 3 p.m. 39.29 6.70 90.18 82.30 06Nov2017 4 p.m. 39.63 6.10 88.31 52.70 06Nov2017 5 p.m. 39.94 4.90 87.86 3.40 06Nov2017 6 p.m. 39.81 5.50 90.05 0.00 06Nov2017 7 p.m. 41.77 8.30 68.15 0.00 06Nov2017 8 p.m. 39.45 5.10 92.23 0.00 06Nov2017 9 p.m. 39.40 5.00 91.61 0.00 06Nov2017 10 p.m. 39.49 3.70 93.00 0.00 06Nov2017 11 p.m. 39.63 4.60 94.16 0.00 07Nov2017 12 a.m. 39.74 5.10 95.35 0.00 07Nov2017 1 a.m. 39.67 5.20 95.50 0.00 07Nov2017 2 a.m. 39.69 4.80 95.91 0.00 07Nov2017 3 a.m. 39.65 6.10 96.52 0.00 07Nov2017 4 a.m. 39.43 7.50 96.55 0.00 07Nov2017 5 a.m. 39.42 7.60 95.64 0.00 07Nov2017 6 a.m. 39.33 7.60 96.84 0.00 07Nov2017 7 a.m. 38.95 7.90 98.94 0.00 Accuml. Values 958.55 154.20 2112.63 855.30 Num. Valid Values 24 24 24 24 Avg. Values 39.94 6.43 88.03 35.64 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.41 248.11 88.03 73.54 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1197 definition: xcompl = 1 - (RELH_avg/100) TdC = 2.5806 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 = 0.4715 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5285 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.3462 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 = 1.0187 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.1582 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.018 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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