Detailed Weather Data for Project: EUFA

Date Time TAIR WSPD RELH SRAD 02Jan2018 8 a.m. 16.48 3.87 55.75 3.00 02Jan2018 9 a.m. 17.71 4.86 50.49 39.00 02Jan2018 10 a.m. 18.37 3.61 46.65 108.00 02Jan2018 11 a.m. 19.69 4.09 43.78 222.00 02Jan2018 12 p.m. 20.89 3.54 40.73 241.00 02Jan2018 1 p.m. 22.86 2.23 38.77 246.00 02Jan2018 2 p.m. 24.08 0.21 32.06 209.00 02Jan2018 3 p.m. 24.85 1.85 32.18 232.00 02Jan2018 4 p.m. 25.07 1.24 29.86 79.00 02Jan2018 5 p.m. 24.94 1.22 32.30 35.00 02Jan2018 6 p.m. 24.73 0.84 33.15 2.00 02Jan2018 7 p.m. 33.30 1.66 44.81 0.00 02Jan2018 8 p.m. 24.30 1.08 35.90 0.00 02Jan2018 9 p.m. 23.20 0.79 39.75 0.00 02Jan2018 10 p.m. 21.67 1.65 42.07 0.00 02Jan2018 11 p.m. 22.64 3.36 54.65 0.00 03Jan2018 12 a.m. 24.30 8.71 49.09 0.00 03Jan2018 1 a.m. 24.62 4.62 51.35 0.00 03Jan2018 2 a.m. 23.52 9.24 51.47 0.00 03Jan2018 3 a.m. 20.44 4.93 57.64 0.00 03Jan2018 4 a.m. 24.08 3.98 62.65 0.00 03Jan2018 5 a.m. 21.00 12.58 57.52 0.00 03Jan2018 6 a.m. 21.65 6.14 57.64 0.00 03Jan2018 7 a.m. 23.31 5.11 55.07 0.00 Accuml. Values 547.70 91.41 1095.33 1416.00 Num. Valid Values 24 24 24 24 Avg. Values 22.82 3.81 45.64 59.00 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -5.10 147.08 45.64 121.75 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5436 definition: xcompl = 1 - (RELH_avg/100) TdC = -15.1002 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 = 0.3263 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.6737 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.0234 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 = 2.3060 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.7658 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.047 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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