Detailed Weather Data for Project: CANT

Date Time TAIR WSPD RELH SRAD 06Dec2017 8 a.m. 33.22 2.00 50.98 15.10 06Dec2017 9 a.m. 35.20 1.90 47.56 188.50 06Dec2017 10 a.m. 41.09 0.90 41.89 359.80 06Dec2017 11 a.m. 48.20 0.80 39.26 484.70 06Dec2017 12 p.m. 50.47 1.00 37.61 561.50 06Dec2017 1 p.m. 51.21 1.40 34.89 576.90 06Dec2017 2 p.m. 53.37 1.90 31.40 526.30 06Dec2017 3 p.m. 52.99 2.30 29.22 422.40 06Dec2017 4 p.m. 52.05 2.10 32.52 258.60 06Dec2017 5 p.m. 50.29 2.20 34.37 73.80 06Dec2017 6 p.m. 49.01 1.20 36.44 0.00 06Dec2017 7 p.m. 32.32 0.30 40.77 0.00 06Dec2017 8 p.m. 41.56 0.10 39.76 0.00 06Dec2017 9 p.m. 39.99 0.50 39.13 0.00 06Dec2017 10 p.m. 38.46 0.90 40.90 0.00 06Dec2017 11 p.m. 37.06 1.50 43.49 0.00 07Dec2017 12 a.m. 37.17 4.00 51.80 0.00 07Dec2017 1 a.m. 36.37 4.20 64.91 0.00 07Dec2017 2 a.m. 35.51 2.30 68.26 0.00 07Dec2017 3 a.m. 34.65 2.20 68.24 0.00 07Dec2017 4 a.m. 32.70 3.60 69.85 0.00 07Dec2017 5 a.m. 29.84 4.70 63.36 0.00 07Dec2017 6 a.m. 28.08 3.30 68.99 0.00 07Dec2017 7 a.m. 26.37 2.50 72.01 0.00 Accuml. Values 967.17 47.80 1147.61 3467.60 Num. Valid Values 24 24 24 24 Avg. Values 40.30 1.99 47.82 144.48 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.61 76.91 47.82 298.14 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5218 definition: xcompl = 1 - (RELH_avg/100) TdC = -5.5657 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 = 0.4746 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5254 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.9833 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 = 4.4728 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.4030 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.087 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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