Detailed Weather Data for Project: CANT

Date Time TAIR WSPD RELH SRAD 04Dec2017 8 a.m. 62.40 8.70 86.69 0.80 04Dec2017 9 a.m. 62.02 10.50 85.45 91.10 04Dec2017 10 a.m. 63.32 8.70 78.38 253.20 04Dec2017 11 a.m. 68.02 5.50 59.36 456.30 04Dec2017 12 p.m. 71.22 4.00 40.35 525.00 04Dec2017 1 p.m. 71.80 3.50 26.38 511.10 04Dec2017 2 p.m. 65.03 2.80 37.33 362.80 04Dec2017 3 p.m. 63.86 2.70 32.45 316.00 04Dec2017 4 p.m. 63.64 2.80 28.05 234.20 04Dec2017 5 p.m. 60.64 3.20 26.31 53.80 04Dec2017 6 p.m. 57.63 2.50 30.37 0.00 04Dec2017 7 p.m. 39.92 2.10 36.41 0.00 04Dec2017 8 p.m. 52.38 3.60 44.09 0.00 04Dec2017 9 p.m. 49.75 4.40 45.42 0.00 04Dec2017 10 p.m. 48.00 3.20 48.00 0.00 04Dec2017 11 p.m. 45.99 5.00 50.90 0.00 05Dec2017 12 a.m. 44.28 5.20 52.80 0.00 05Dec2017 1 a.m. 42.89 6.30 46.81 0.00 05Dec2017 2 a.m. 41.52 5.10 41.46 0.00 05Dec2017 3 a.m. 39.45 5.80 40.79 0.00 05Dec2017 4 a.m. 38.37 4.10 40.59 0.00 05Dec2017 5 a.m. 37.40 4.30 35.88 0.00 05Dec2017 6 a.m. 36.66 2.60 37.51 0.00 05Dec2017 7 a.m. 36.00 2.30 39.25 0.00 Accuml. Values 1262.19 108.90 1091.03 2804.30 Num. Valid Values 24 24 24 24 Avg. Values 52.59 4.54 45.46 116.85 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 11.44 175.22 45.46 241.11 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5454 definition: xcompl = 1 - (RELH_avg/100) TdC = 0.0027 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 = 0.5758 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4242 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.6273 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 = 7.4210 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 5.4153 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.127 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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