Detailed Weather Data for Project: FALL

Date Time TAIR WSPD RELH SRAD 30Dec2017 8 a.m. 14.90 14.40 80.44 0.00 30Dec2017 9 a.m. 14.25 14.50 79.96 23.00 30Dec2017 10 a.m. 14.29 12.90 77.09 142.60 30Dec2017 11 a.m. 15.37 11.70 72.16 373.70 30Dec2017 12 p.m. 17.11 10.70 66.11 446.90 30Dec2017 1 p.m. 18.21 10.00 59.55 448.30 30Dec2017 2 p.m. 19.33 9.10 56.46 447.90 30Dec2017 3 p.m. 20.28 8.30 53.58 325.40 30Dec2017 4 p.m. 20.52 8.80 53.24 166.30 30Dec2017 5 p.m. 19.94 9.80 52.11 43.70 30Dec2017 6 p.m. 18.37 7.70 53.00 0.00 30Dec2017 7 p.m. 10.98 9.70 60.69 0.00 30Dec2017 8 p.m. 15.82 10.00 60.36 0.00 30Dec2017 9 p.m. 14.05 10.00 62.06 0.00 30Dec2017 10 p.m. 13.17 9.40 66.79 0.00 30Dec2017 11 p.m. 12.88 10.00 68.05 0.00 31Dec2017 12 a.m. 13.08 11.00 67.17 0.00 31Dec2017 1 a.m. 13.12 11.70 65.01 0.00 31Dec2017 2 a.m. 12.74 12.00 71.11 0.00 31Dec2017 3 a.m. 12.40 11.00 70.83 0.00 31Dec2017 4 a.m. 11.77 11.10 73.14 0.00 31Dec2017 5 a.m. 11.21 10.90 72.75 0.00 31Dec2017 6 a.m. 10.62 12.80 75.12 0.00 31Dec2017 7 a.m. 9.66 12.90 74.49 0.00 Accuml. Values 354.07 260.40 1591.27 2417.80 Num. Valid Values 24 24 24 24 Avg. Values 14.75 10.85 66.30 100.74 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -9.58 418.98 66.30 207.88 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3370 definition: xcompl = 1 - (RELH_avg/100) TdC = -14.6675 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 = 0.2626 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7374 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.6616 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 = 1.0022 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.6382 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.054 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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