Detailed Weather Data for Project: MCGE

Date Time TAIR WSPD RELH SRAD 06Mar2018 8 a.m. 36.18 6.43 73.25 136.25 06Mar2018 9 a.m. 44.66 9.62 51.00 339.00 06Mar2018 10 a.m. 51.71 12.69 32.75 552.50 06Mar2018 11 a.m. 55.28 16.63 26.67 706.33 06Mar2018 12 p.m. 57.83 14.04 23.75 811.00 06Mar2018 1 p.m. 60.02 14.32 20.67 843.33 06Mar2018 2 p.m. 61.65 18.17 18.25 810.00 06Mar2018 3 p.m. 62.28 19.68 16.50 710.75 06Mar2018 4 p.m. 62.10 21.31 16.25 550.50 06Mar2018 5 p.m. 61.43 19.24 15.50 349.75 06Mar2018 6 p.m. 57.92 19.91 17.00 50.00 06Mar2018 7 p.m. 54.86 13.65 22.00 0.00 06Mar2018 8 p.m. 53.42 19.91 24.00 0.00 06Mar2018 9 p.m. 52.07 17.90 24.00 0.00 06Mar2018 10 p.m. 48.20 19.39 31.00 0.00 06Mar2018 11 p.m. 45.09 16.55 35.75 0.00 07Mar2018 12 a.m. 42.57 17.11 40.25 0.00 07Mar2018 1 a.m. 40.05 11.41 45.75 0.00 07Mar2018 2 a.m. 38.66 12.19 48.50 0.00 07Mar2018 3 a.m. 37.28 11.86 52.33 0.00 07Mar2018 4 a.m. 36.05 11.02 55.00 0.00 07Mar2018 5 a.m. 34.52 8.72 59.50 0.00 07Mar2018 6 a.m. 32.90 6.99 64.00 0.00 07Mar2018 7 a.m. 31.64 6.38 67.00 9.00 Accuml. Values 1158.37 345.12 880.67 5868.41 Num. Valid Values 24 24 24 24 Avg. Values 48.27 14.38 36.69 244.52 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 9.04 555.30 36.69 504.57 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.6331 definition: xcompl = 1 - (RELH_avg/100) TdC = -5.1275 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 = 0.5412 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4588 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.8299 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 = 7.3605 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 11.7612 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.315 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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