Detailed Weather Data for Project: EUFA

Date Time TAIR WSPD RELH SRAD 06Dec2017 8 a.m. 34.95 0.77 74.24 7.00 06Dec2017 9 a.m. 44.94 0.60 45.24 94.00 06Dec2017 10 a.m. 45.50 7.15 38.46 267.00 06Dec2017 11 a.m. 44.73 1.29 40.66 439.00 06Dec2017 12 p.m. 46.49 1.93 37.91 275.00 06Dec2017 1 p.m. 47.80 3.90 36.39 416.00 06Dec2017 2 p.m. 50.32 3.36 38.40 481.00 06Dec2017 3 p.m. 52.75 3.36 35.47 411.00 06Dec2017 4 p.m. 54.84 3.77 29.98 291.00 06Dec2017 5 p.m. 53.85 0.53 33.95 94.00 06Dec2017 6 p.m. 51.76 1.57 34.43 2.00 06Dec2017 7 p.m. 32.63 2.12 37.67 0.00 06Dec2017 8 p.m. 47.37 1.98 44.57 0.00 06Dec2017 9 p.m. 45.05 1.39 45.79 0.00 06Dec2017 10 p.m. 42.85 0.93 52.01 0.00 06Dec2017 11 p.m. 42.42 1.13 50.79 0.00 07Dec2017 12 a.m. 41.76 1.03 48.35 0.00 07Dec2017 1 a.m. 40.12 1.84 51.53 0.00 07Dec2017 2 a.m. 38.14 2.13 53.12 0.00 07Dec2017 3 a.m. 37.58 3.23 54.82 0.00 07Dec2017 4 a.m. 35.71 5.04 60.56 0.00 07Dec2017 5 a.m. 33.08 3.29 59.59 0.00 07Dec2017 6 a.m. 30.88 3.05 55.87 0.00 07Dec2017 7 a.m. 30.54 2.40 59.71 0.00 Accuml. Values 1026.08 57.79 1119.51 2777.00 Num. Valid Values 24 24 24 24 Avg. Values 42.75 2.41 46.65 115.71 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 5.97 92.98 46.65 238.77 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5335 definition: xcompl = 1 - (RELH_avg/100) TdC = -4.6489 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 = 0.4954 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5046 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.3794 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 = 5.0275 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.8564 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.084 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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