Detailed Weather Data for Project: EUFA

Date Time TAIR WSPD RELH SRAD 06Mar2018 8 a.m. 45.93 1.68 41.82 108.00 06Mar2018 9 a.m. 50.32 9.54 27.96 324.00 06Mar2018 10 a.m. 51.96 0.67 26.13 524.00 06Mar2018 11 a.m. 53.40 0.95 24.97 681.00 06Mar2018 12 p.m. 55.06 1.54 25.09 786.00 06Mar2018 1 p.m. 56.05 4.24 27.41 831.00 06Mar2018 2 p.m. 56.05 1.24 22.04 806.00 06Mar2018 3 p.m. 58.24 1.68 20.51 718.00 06Mar2018 4 p.m. 57.58 2.18 18.07 553.00 06Mar2018 5 p.m. 57.04 1.14 19.47 326.00 06Mar2018 6 p.m. 55.26 1.20 18.68 113.00 06Mar2018 7 p.m. 48.88 1.11 38.27 7.00 06Mar2018 8 p.m. 47.03 3.49 35.65 0.00 06Mar2018 9 p.m. 44.51 2.72 37.67 0.00 06Mar2018 10 p.m. 42.40 2.16 39.49 0.00 06Mar2018 11 p.m. 41.09 0.97 43.22 0.00 07Mar2018 12 a.m. 39.34 2.39 44.14 0.00 07Mar2018 1 a.m. 37.69 1.88 48.05 0.00 07Mar2018 2 a.m. 36.48 2.13 52.14 0.00 07Mar2018 3 a.m. 35.71 0.96 56.16 0.00 07Mar2018 4 a.m. 34.72 1.37 56.04 0.00 07Mar2018 5 a.m. 34.50 1.21 60.26 0.00 07Mar2018 6 a.m. 33.19 0.88 62.15 0.00 07Mar2018 7 a.m. 33.19 1.43 63.86 3.00 Accuml. Values 1105.63 48.76 909.25 5780.00 Num. Valid Values 24 24 24 24 Avg. Values 46.07 2.03 37.89 240.83 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 7.82 78.45 37.89 496.96 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.6211 definition: xcompl = 1 - (RELH_avg/100) TdC = -5.7929 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 = 0.5231 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4769 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.6263 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 = 6.6516 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.4310 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.160 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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