Detailed Weather Data for Project: EUFA

Date Time TAIR WSPD RELH SRAD 04Dec2017 8 a.m. 65.05 8.14 82.11 20.00 04Dec2017 9 a.m. 66.92 9.77 78.14 67.00 04Dec2017 10 a.m. 68.90 11.65 74.54 135.00 04Dec2017 11 a.m. 68.99 9.70 75.63 50.00 04Dec2017 12 p.m. 70.88 10.01 71.98 116.00 04Dec2017 1 p.m. 73.40 9.88 65.99 126.00 04Dec2017 2 p.m. 75.70 14.10 59.76 422.00 04Dec2017 3 p.m. 75.60 11.94 59.46 275.00 04Dec2017 4 p.m. 75.27 10.28 61.05 85.00 04Dec2017 5 p.m. 63.63 7.16 100.24 32.00 04Dec2017 6 p.m. 64.81 5.47 99.68 1.00 04Dec2017 7 p.m. 39.88 0.38 50.06 0.00 04Dec2017 8 p.m. 61.21 0.43 55.31 0.00 04Dec2017 9 p.m. 60.87 0.63 37.18 0.00 04Dec2017 10 p.m. 57.15 1.96 39.07 0.00 04Dec2017 11 p.m. 53.73 3.57 35.40 0.00 05Dec2017 12 a.m. 51.21 3.55 41.08 0.00 05Dec2017 1 a.m. 48.88 2.17 39.98 0.00 05Dec2017 2 a.m. 46.38 2.73 42.37 0.00 05Dec2017 3 a.m. 44.83 2.04 48.29 0.00 05Dec2017 4 a.m. 44.17 2.70 48.66 0.00 05Dec2017 5 a.m. 42.53 2.26 52.01 0.00 05Dec2017 6 a.m. 40.44 2.68 50.49 0.00 05Dec2017 7 a.m. 39.34 3.76 51.16 0.00 Accuml. Values 1399.78 136.96 1419.64 1329.00 Num. Valid Values 24 24 24 24 Avg. Values 58.32 5.71 59.15 55.38 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 14.62 220.37 59.15 114.27 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4085 definition: xcompl = 1 - (RELH_avg/100) TdC = 6.7988 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 = 0.6196 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3804 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.2476 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 = 6.7683 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 5.6983 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.091 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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