Detailed Weather Data for Project: EUFA

Date Time TAIR WSPD RELH SRAD 05Mar2018 8 a.m. 64.94 13.64 77.59 46.00 05Mar2018 9 a.m. 54.95 18.13 63.06 178.00 05Mar2018 10 a.m. 56.59 0.48 43.04 475.00 05Mar2018 11 a.m. 58.91 1.21 35.65 637.00 05Mar2018 12 p.m. 59.02 1.07 34.19 749.00 05Mar2018 1 p.m. 59.77 0.86 29.30 784.00 05Mar2018 2 p.m. 57.90 0.88 29.67 740.00 05Mar2018 3 p.m. 61.21 0.78 19.96 689.00 05Mar2018 4 p.m. 61.54 0.74 20.21 508.00 05Mar2018 5 p.m. 61.32 0.76 14.77 331.00 05Mar2018 6 p.m. 59.56 0.79 17.16 147.00 05Mar2018 7 p.m. 51.98 1.14 22.89 6.00 05Mar2018 8 p.m. 54.18 0.36 27.78 0.00 05Mar2018 9 p.m. 51.98 1.05 29.43 0.00 05Mar2018 10 p.m. 50.54 0.58 34.12 0.00 05Mar2018 11 p.m. 48.13 0.86 44.19 0.00 06Mar2018 12 a.m. 49.23 0.43 38.95 0.00 06Mar2018 1 a.m. 46.90 0.09 39.25 0.00 06Mar2018 2 a.m. 44.82 0.92 53.72 0.00 06Mar2018 3 a.m. 45.05 1.05 41.64 0.00 06Mar2018 4 a.m. 43.74 0.92 62.09 0.00 06Mar2018 5 a.m. 44.60 1.20 53.84 0.00 06Mar2018 6 a.m. 45.61 3.16 45.97 0.00 06Mar2018 7 a.m. 44.82 1.86 38.70 2.00 Accuml. Values 1277.27 52.96 917.17 5292.00 Num. Valid Values 24 24 24 24 Avg. Values 53.22 2.21 38.22 220.50 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 11.79 85.21 38.22 455.01 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.6178 definition: xcompl = 1 - (RELH_avg/100) TdC = -2.1139 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 = 0.5808 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4192 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.3830 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 = 8.6203 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 4.4408 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.174 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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