Detailed Weather Data for Project: EUFA

Date Time TAIR WSPD RELH SRAD 03Mar2018 8 a.m. 44.51 10.07 68.25 83.00 03Mar2018 9 a.m. 47.70 9.40 61.48 274.00 03Mar2018 10 a.m. 52.52 8.74 54.70 461.00 03Mar2018 11 a.m. 57.25 7.78 48.11 614.00 03Mar2018 12 p.m. 61.43 8.11 43.10 719.00 03Mar2018 1 p.m. 64.40 7.53 39.62 764.00 03Mar2018 2 p.m. 66.27 8.33 39.01 744.00 03Mar2018 3 p.m. 67.14 8.20 36.75 655.00 03Mar2018 4 p.m. 69.22 9.49 33.51 515.00 03Mar2018 5 p.m. 68.58 9.51 32.30 339.00 03Mar2018 6 p.m. 66.04 9.06 37.60 145.00 03Mar2018 7 p.m. 56.93 11.86 71.18 1.00 03Mar2018 8 p.m. 60.42 8.63 47.49 0.00 03Mar2018 9 p.m. 60.76 8.51 41.75 0.00 03Mar2018 10 p.m. 58.57 8.40 42.91 0.00 03Mar2018 11 p.m. 55.94 8.16 47.74 0.00 04Mar2018 12 a.m. 56.25 6.78 45.97 0.00 04Mar2018 1 a.m. 55.49 6.70 46.82 0.00 04Mar2018 2 a.m. 53.74 8.41 52.63 0.00 04Mar2018 3 a.m. 52.84 8.41 57.14 0.00 04Mar2018 4 a.m. 52.52 7.68 56.47 0.00 04Mar2018 5 a.m. 51.98 8.09 57.81 0.00 04Mar2018 6 a.m. 51.42 8.04 59.34 0.00 04Mar2018 7 a.m. 51.98 6.99 59.16 0.00 Accuml. Values 1383.91 202.88 1180.84 5314.00 Num. Valid Values 24 24 24 24 Avg. Values 57.66 8.45 49.20 221.42 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 14.26 326.43 49.20 456.90 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5080 definition: xcompl = 1 - (RELH_avg/100) TdC = 3.7356 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 = 0.6147 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3853 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.6135 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 = 8.2804 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 8.7810 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.245 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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