Detailed Weather Data for Project: HULA

Date Time TAIR WSPD RELH SRAD 04Mar2018 8 a.m. 53.06 11.70 53.20 16.60 04Mar2018 9 a.m. 54.18 12.00 52.80 74.70 04Mar2018 10 a.m. 54.70 10.80 54.78 74.30 04Mar2018 11 a.m. 55.67 11.60 54.90 138.20 04Mar2018 12 p.m. 57.65 12.00 54.11 269.60 04Mar2018 1 p.m. 57.79 12.30 54.34 260.00 04Mar2018 2 p.m. 58.21 14.00 53.40 455.10 04Mar2018 3 p.m. 58.55 14.10 55.76 351.00 04Mar2018 4 p.m. 56.98 14.90 62.45 205.20 04Mar2018 5 p.m. 55.54 13.70 68.49 75.20 04Mar2018 6 p.m. 54.27 14.10 71.65 12.10 04Mar2018 7 p.m. 53.29 13.00 28.07 2.10 04Mar2018 8 p.m. 53.62 12.40 73.87 0.00 04Mar2018 9 p.m. 53.53 11.40 78.97 0.00 04Mar2018 10 p.m. 53.40 11.40 83.87 0.00 04Mar2018 11 p.m. 53.29 10.60 86.00 0.00 05Mar2018 12 a.m. 53.31 8.90 87.48 0.00 05Mar2018 1 a.m. 54.18 9.70 84.35 0.00 05Mar2018 2 a.m. 54.43 10.00 81.80 0.00 05Mar2018 3 a.m. 55.02 8.80 82.80 0.00 05Mar2018 4 a.m. 56.32 7.70 84.92 0.00 05Mar2018 5 a.m. 58.75 8.40 88.79 0.00 05Mar2018 6 a.m. 59.29 9.10 92.09 0.00 05Mar2018 7 a.m. 55.22 20.80 82.65 0.00 Accuml. Values 1330.25 283.40 1671.54 1934.10 Num. Valid Values 24 24 24 24 Avg. Values 55.43 11.81 69.65 80.59 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 13.01 455.99 69.65 166.29 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3035 definition: xcompl = 1 - (RELH_avg/100) TdC = 7.6619 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 = 0.5978 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4022 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.8060 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 = 4.5123 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 6.5616 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.123 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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