Detailed Weather Data for Project: FALL

Date Time TAIR WSPD RELH SRAD 06Mar2018 8 a.m. 42.06 11.30 29.69 110.00 06Mar2018 9 a.m. 44.69 14.80 28.15 334.00 06Mar2018 10 a.m. 46.71 25.20 26.88 509.50 06Mar2018 11 a.m. 47.25 30.70 28.30 594.30 06Mar2018 12 p.m. 46.17 26.90 38.45 544.20 06Mar2018 1 p.m. 45.79 28.70 37.57 397.80 06Mar2018 2 p.m. 43.81 30.30 47.42 464.80 06Mar2018 3 p.m. 40.64 27.30 61.87 234.70 06Mar2018 4 p.m. 38.86 28.60 61.34 286.80 06Mar2018 5 p.m. 39.45 29.60 52.78 230.60 06Mar2018 6 p.m. 39.61 26.60 51.42 50.40 06Mar2018 7 p.m. 46.76 8.70 35.63 0.10 06Mar2018 8 p.m. 36.93 17.80 59.25 0.00 06Mar2018 9 p.m. 36.88 20.90 59.91 0.00 06Mar2018 10 p.m. 36.68 18.10 60.89 0.00 06Mar2018 11 p.m. 35.76 15.30 62.62 0.00 07Mar2018 12 a.m. 34.09 12.50 65.39 0.00 07Mar2018 1 a.m. 32.81 10.40 67.49 0.00 07Mar2018 2 a.m. 33.03 11.40 68.12 0.00 07Mar2018 3 a.m. 33.31 13.40 66.86 0.00 07Mar2018 4 a.m. 33.24 11.40 67.17 0.00 07Mar2018 5 a.m. 32.40 10.60 68.06 0.00 07Mar2018 6 a.m. 29.91 8.60 69.10 0.00 07Mar2018 7 a.m. 26.73 7.80 74.04 0.70 Accuml. Values 923.56 446.90 1288.40 3757.90 Num. Valid Values 24 24 24 24 Avg. Values 38.48 18.62 53.68 156.58 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 3.60 719.06 53.68 323.10 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4632 definition: xcompl = 1 - (RELH_avg/100) TdC = -4.9286 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 = 0.4591 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5409 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.2177 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 = 3.6879 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 7.8998 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.208 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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