Detailed Weather Data for Project: MCGE

Date Time TAIR WSPD RELH SRAD 03Dec2017 8 a.m. 55.13 7.33 92.25 13.25 03Dec2017 9 a.m. 57.32 8.20 88.67 84.33 03Dec2017 10 a.m. 60.53 8.33 83.75 234.75 03Dec2017 11 a.m. 64.40 8.95 75.00 222.33 03Dec2017 12 p.m. 70.07 8.61 65.50 433.50 03Dec2017 1 p.m. 74.72 10.96 56.67 317.67 03Dec2017 2 p.m. 75.51 12.08 55.00 202.75 03Dec2017 3 p.m. 76.64 13.09 52.25 287.50 03Dec2017 4 p.m. 76.28 11.30 50.50 201.75 03Dec2017 5 p.m. 74.79 9.06 50.75 78.75 03Dec2017 6 p.m. 70.34 8.05 60.00 0.00 03Dec2017 7 p.m. 69.08 7.16 65.00 0.00 03Dec2017 8 p.m. 69.98 9.17 63.00 0.00 03Dec2017 9 p.m. 68.90 12.30 60.00 0.00 03Dec2017 10 p.m. 67.46 9.84 62.00 0.00 03Dec2017 11 p.m. 66.78 10.18 64.00 0.00 04Dec2017 12 a.m. 64.53 9.62 70.50 0.00 04Dec2017 1 a.m. 62.91 9.84 76.75 0.00 04Dec2017 2 a.m. 63.09 7.89 82.00 0.00 04Dec2017 3 a.m. 63.74 7.98 85.00 0.00 04Dec2017 4 a.m. 64.67 8.61 86.00 0.00 04Dec2017 5 a.m. 65.03 7.83 86.00 0.00 04Dec2017 6 a.m. 64.85 8.44 88.50 0.00 04Dec2017 7 a.m. 63.59 8.50 96.00 0.00 Accuml. Values 1610.34 223.32 1715.09 2076.58 Num. Valid Values 24 24 24 24 Avg. Values 67.10 9.31 71.46 86.52 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 19.50 359.32 71.46 178.54 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2854 definition: xcompl = 1 - (RELH_avg/100) TdC = 14.2861 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 = 0.6809 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3191 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.1851 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 = 6.3775 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 7.4653 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.126 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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