Detailed Weather Data for Project: ELDR

Date Time TAIR WSPD RELH SRAD 06Mar2018 8 a.m. 41.18 16.30 36.95 80.00 06Mar2018 9 a.m. 44.40 28.30 32.36 274.40 06Mar2018 10 a.m. 47.35 33.30 28.40 451.40 06Mar2018 11 a.m. 48.81 35.70 26.70 585.90 06Mar2018 12 p.m. 48.22 29.50 30.21 542.60 06Mar2018 1 p.m. 47.01 26.40 35.27 530.60 06Mar2018 2 p.m. 45.09 27.00 43.10 519.50 06Mar2018 3 p.m. 41.88 19.90 52.98 227.40 06Mar2018 4 p.m. 39.52 18.80 59.89 308.90 06Mar2018 5 p.m. 40.51 20.10 47.70 313.70 06Mar2018 6 p.m. 40.10 18.90 46.54 109.80 06Mar2018 7 p.m. 48.49 5.00 28.60 6.70 06Mar2018 8 p.m. 36.39 9.60 56.78 0.00 06Mar2018 9 p.m. 34.90 7.60 60.81 0.00 06Mar2018 10 p.m. 33.82 7.00 64.55 0.00 06Mar2018 11 p.m. 33.53 6.30 65.51 0.00 07Mar2018 12 a.m. 32.41 6.40 68.67 0.00 07Mar2018 1 a.m. 32.88 9.00 67.14 0.00 07Mar2018 2 a.m. 32.27 7.60 68.49 0.00 07Mar2018 3 a.m. 30.97 6.40 72.57 0.00 07Mar2018 4 a.m. 28.71 6.60 77.60 0.00 07Mar2018 5 a.m. 26.67 7.60 80.17 0.00 07Mar2018 6 a.m. 24.42 9.20 84.17 0.00 07Mar2018 7 a.m. 24.98 6.30 85.20 0.00 Accuml. Values 904.53 368.80 1320.36 3950.90 Num. Valid Values 24 24 24 24 Avg. Values 37.69 15.37 55.01 164.62 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 3.16 593.40 55.01 339.70 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4499 definition: xcompl = 1 - (RELH_avg/100) TdC = -5.0077 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 = 0.4523 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5477 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.3842 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 = 3.4701 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 6.3986 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.180 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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