Detailed Weather Data for Project: MCGE

Date Time TAIR WSPD RELH SRAD 06Dec2017 8 a.m. 34.94 1.19 87.00 8.33 06Dec2017 9 a.m. 37.34 0.52 78.67 75.67 06Dec2017 10 a.m. 40.86 2.35 61.00 155.00 06Dec2017 11 a.m. 44.00 4.62 49.67 185.00 06Dec2017 12 p.m. 47.70 7.49 39.00 255.25 06Dec2017 1 p.m. 49.73 6.15 34.00 221.50 06Dec2017 2 p.m. 51.39 4.25 30.50 254.00 06Dec2017 3 p.m. 52.47 5.59 29.25 208.75 06Dec2017 4 p.m. 52.16 5.54 30.25 123.00 06Dec2017 5 p.m. 49.73 4.64 36.25 48.25 06Dec2017 6 p.m. 43.34 2.24 54.00 0.00 06Dec2017 7 p.m. 38.12 3.36 71.00 0.00 06Dec2017 8 p.m. 36.32 2.68 79.50 0.00 06Dec2017 9 p.m. 34.16 3.21 83.67 0.00 06Dec2017 10 p.m. 33.50 4.62 80.67 0.00 06Dec2017 11 p.m. 37.35 5.37 63.25 0.00 07Dec2017 12 a.m. 36.68 5.59 64.67 0.00 07Dec2017 1 a.m. 33.26 3.24 73.00 0.00 07Dec2017 2 a.m. 33.44 6.26 76.00 0.00 07Dec2017 3 a.m. 32.72 5.14 74.00 0.00 07Dec2017 4 a.m. 32.72 7.16 74.00 0.00 07Dec2017 5 a.m. 34.88 12.08 65.00 0.00 07Dec2017 6 a.m. 34.22 12.75 66.33 0.00 07Dec2017 7 a.m. -901.00 -901.00 -901.00 -901.00 Accuml. Values 921.03 116.04 1400.68 1534.75 Num. Valid Values 23 23 23 23 Avg. Values 40.04 5.05 60.90 66.73 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.47 194.83 60.90 137.70 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3910 definition: xcompl = 1 - (RELH_avg/100) TdC = -2.3887 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 = 0.4724 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5276 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.2775 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 = 3.2931 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.8114 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.064 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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