Detailed Weather Data for Project: EUFA

Date Time TAIR WSPD RELH SRAD 30Dec2017 8 a.m. 34.18 3.49 74.31 1.00 30Dec2017 9 a.m. 31.32 4.58 78.51 20.00 30Dec2017 10 a.m. 29.79 4.72 82.97 48.00 30Dec2017 11 a.m. 29.57 3.62 85.85 56.00 30Dec2017 12 p.m. 28.69 1.90 86.63 49.00 30Dec2017 1 p.m. 28.15 2.17 83.59 61.00 30Dec2017 2 p.m. 28.69 1.89 78.95 65.00 30Dec2017 3 p.m. 27.70 1.55 76.01 86.00 30Dec2017 4 p.m. 27.36 2.39 74.85 52.00 30Dec2017 5 p.m. 26.71 2.35 71.92 20.00 30Dec2017 6 p.m. 26.60 2.69 72.59 1.00 30Dec2017 7 p.m. 19.67 2.87 39.13 0.00 30Dec2017 8 p.m. 26.26 1.70 71.49 0.00 30Dec2017 9 p.m. 26.49 1.92 69.79 0.00 30Dec2017 10 p.m. 26.92 1.26 71.19 0.00 30Dec2017 11 p.m. 27.14 1.75 71.18 0.00 31Dec2017 12 a.m. 27.27 2.47 71.25 0.00 31Dec2017 1 a.m. 26.82 2.81 74.55 0.00 31Dec2017 2 a.m. 26.71 3.19 80.10 0.00 31Dec2017 3 a.m. 26.92 1.54 84.20 0.00 31Dec2017 4 a.m. 23.95 2.34 70.02 0.00 31Dec2017 5 a.m. 19.56 3.86 78.45 0.00 31Dec2017 6 a.m. 18.57 4.75 86.51 0.00 31Dec2017 7 a.m. 18.46 2.42 84.26 0.00 Accuml. Values 633.49 64.23 1818.30 459.00 Num. Valid Values 24 24 24 24 Avg. Values 26.40 2.68 75.76 19.13 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -3.11 103.35 75.76 39.46 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2424 definition: xcompl = 1 - (RELH_avg/100) TdC = -6.7710 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 = 0.3559 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.6441 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.7009 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 = 1.1836 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.8348 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.011 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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