Detailed Weather Data for Project: EUFA

Date Time TAIR WSPD RELH SRAD 01Jan2018 8 a.m. 7.81 3.11 73.21 7.00 01Jan2018 9 a.m. 9.25 3.12 70.22 136.00 01Jan2018 10 a.m. 11.77 2.99 64.11 312.00 01Jan2018 11 a.m. 14.40 4.83 59.84 461.00 01Jan2018 12 p.m. 16.16 2.00 48.66 556.00 01Jan2018 1 p.m. 18.14 2.11 46.16 593.00 01Jan2018 2 p.m. 20.55 2.26 38.34 563.00 01Jan2018 3 p.m. 20.89 2.59 39.69 470.00 01Jan2018 4 p.m. 21.65 2.21 40.54 326.00 01Jan2018 5 p.m. 20.77 2.39 41.21 143.00 01Jan2018 6 p.m. 19.02 2.39 46.71 6.00 01Jan2018 7 p.m. 24.85 0.43 35.60 0.00 01Jan2018 8 p.m. 15.62 3.78 49.58 0.00 01Jan2018 9 p.m. 15.49 3.30 53.79 0.00 01Jan2018 10 p.m. 14.63 0.76 54.52 0.00 01Jan2018 11 p.m. 14.63 0.44 54.65 0.00 02Jan2018 12 a.m. 15.49 2.53 50.74 0.00 02Jan2018 1 a.m. 14.50 4.26 51.78 0.00 02Jan2018 2 a.m. 15.39 4.14 54.40 0.00 02Jan2018 3 a.m. 15.73 2.10 55.93 0.00 02Jan2018 4 a.m. 15.94 3.23 55.62 0.00 02Jan2018 5 a.m. 15.39 4.20 59.35 1.00 02Jan2018 6 a.m. 15.84 4.51 54.40 0.00 02Jan2018 7 a.m. 15.84 4.86 53.06 0.00 Accuml. Values 389.75 68.54 1252.11 3574.00 Num. Valid Values 24 24 24 24 Avg. Values 16.24 2.86 52.17 148.92 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -8.76 110.28 52.17 307.29 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4783 definition: xcompl = 1 - (RELH_avg/100) TdC = -16.8249 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 = 0.2739 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7261 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.5880 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 = 1.5267 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.0735 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.048 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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