Detailed Weather Data for Project: CANT

Date Time TAIR WSPD RELH SRAD 06Mar2018 8 a.m. 38.53 2.10 33.98 115.20 06Mar2018 9 a.m. 44.02 3.10 28.12 349.20 06Mar2018 10 a.m. 49.03 3.50 25.30 553.00 06Mar2018 11 a.m. 51.67 4.00 23.56 713.40 06Mar2018 12 p.m. 53.53 4.10 20.07 817.00 06Mar2018 1 p.m. 55.58 4.70 17.35 847.50 06Mar2018 2 p.m. 56.17 4.60 16.88 805.20 06Mar2018 3 p.m. 55.98 4.50 18.32 696.00 06Mar2018 4 p.m. 55.85 4.50 18.69 516.80 06Mar2018 5 p.m. 54.86 4.10 20.83 310.30 06Mar2018 6 p.m. 53.06 3.80 25.77 117.30 06Mar2018 7 p.m. 51.51 2.20 22.01 4.70 06Mar2018 8 p.m. 49.26 2.40 29.75 0.00 06Mar2018 9 p.m. 45.95 4.00 35.16 0.00 06Mar2018 10 p.m. 43.50 2.10 42.63 0.00 06Mar2018 11 p.m. 41.27 1.10 44.66 0.00 07Mar2018 12 a.m. 40.84 1.50 49.08 0.00 07Mar2018 1 a.m. 39.40 1.70 51.91 0.00 07Mar2018 2 a.m. 36.03 1.60 52.76 0.00 07Mar2018 3 a.m. 34.61 1.30 56.17 0.00 07Mar2018 4 a.m. 35.29 1.80 60.29 0.00 07Mar2018 5 a.m. 34.36 1.90 63.14 0.00 07Mar2018 6 a.m. 33.66 1.80 66.01 0.00 07Mar2018 7 a.m. 31.73 1.20 66.98 0.00 Accuml. Values 1085.70 67.60 889.42 5845.60 Num. Valid Values 24 24 24 24 Avg. Values 45.24 2.82 37.06 243.57 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 7.35 108.77 37.06 502.60 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.6294 definition: xcompl = 1 - (RELH_avg/100) TdC = -6.4987 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 = 0.5162 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4838 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.6638 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 = 6.5326 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.8354 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.168 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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