Detailed Weather Data for Project: CANT

Date Time TAIR WSPD RELH SRAD 05Dec2017 8 a.m. 35.65 2.40 37.46 0.00 05Dec2017 9 a.m. 36.03 1.20 37.49 36.80 05Dec2017 10 a.m. 37.13 1.60 37.15 145.10 05Dec2017 11 a.m. 38.37 1.30 36.80 237.40 05Dec2017 12 p.m. 41.59 1.00 34.02 486.80 05Dec2017 1 p.m. 44.51 1.20 29.73 460.40 05Dec2017 2 p.m. 48.02 1.10 24.86 502.10 05Dec2017 3 p.m. 48.94 1.20 23.09 427.80 05Dec2017 4 p.m. 49.66 0.60 20.14 219.50 05Dec2017 5 p.m. 48.04 0.90 22.00 52.00 05Dec2017 6 p.m. 42.66 1.80 32.08 0.00 05Dec2017 7 p.m. 44.74 0.00 37.96 0.00 05Dec2017 8 p.m. 39.74 2.10 34.39 0.00 05Dec2017 9 p.m. 38.70 2.20 35.67 0.00 05Dec2017 10 p.m. 38.16 2.80 36.99 0.00 05Dec2017 11 p.m. 37.69 1.80 39.03 0.00 06Dec2017 12 a.m. 36.82 3.30 39.70 0.00 06Dec2017 1 a.m. 37.36 3.90 38.54 0.00 06Dec2017 2 a.m. 36.81 3.80 39.32 0.00 06Dec2017 3 a.m. 36.59 3.40 41.16 0.00 06Dec2017 4 a.m. 38.53 2.20 38.67 0.00 06Dec2017 5 a.m. 39.34 1.40 37.19 0.00 06Dec2017 6 a.m. 36.61 1.30 42.76 0.00 06Dec2017 7 a.m. 35.17 2.20 46.86 0.00 Accuml. Values 966.86 44.70 843.06 2567.90 Num. Valid Values 24 23 24 24 Avg. Values 40.29 1.94 35.13 107.00 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.60 75.05 35.13 220.79 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.6487 definition: xcompl = 1 - (RELH_avg/100) TdC = -9.6474 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 = 0.4745 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5255 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.1368 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 = 5.5717 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.8910 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.081 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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