Detailed Weather Data for Project: FSUP

Date Time TAIR WSPD RELH SRAD 06Dec2017 8 a.m. 24.73 10.00 53.23 2.90 06Dec2017 9 a.m. 27.34 6.80 51.93 134.30 06Dec2017 10 a.m. 37.11 6.10 40.51 324.60 06Dec2017 11 a.m. 42.51 7.90 33.04 482.70 06Dec2017 12 p.m. 45.18 6.70 29.02 584.00 06Dec2017 1 p.m. 46.76 9.20 23.10 617.30 06Dec2017 2 p.m. 47.16 9.30 23.01 576.00 06Dec2017 3 p.m. 47.21 9.30 22.55 394.60 06Dec2017 4 p.m. 47.12 9.20 21.90 15.70 06Dec2017 5 p.m. 46.45 8.00 21.95 7.70 06Dec2017 6 p.m. 43.45 3.70 25.08 1.30 06Dec2017 7 p.m. 27.03 1.00 47.05 0.00 06Dec2017 8 p.m. 35.44 5.00 33.06 0.00 06Dec2017 9 p.m. 34.07 5.80 34.61 0.00 06Dec2017 10 p.m. 31.77 7.40 38.22 0.00 06Dec2017 11 p.m. 29.43 8.00 44.04 0.00 07Dec2017 12 a.m. 29.48 4.90 63.80 0.00 07Dec2017 1 a.m. 27.01 3.20 78.27 0.00 07Dec2017 2 a.m. 25.23 4.60 78.50 0.00 07Dec2017 3 a.m. 23.47 5.00 71.39 0.00 07Dec2017 4 a.m. 21.20 5.50 69.84 0.00 07Dec2017 5 a.m. 18.36 4.70 75.06 0.00 07Dec2017 6 a.m. 16.03 4.30 75.82 0.00 07Dec2017 7 a.m. 13.44 6.00 80.20 0.00 Accuml. Values 786.97 151.60 1135.18 3141.10 Num. Valid Values 24 24 24 24 Avg. Values 32.79 6.32 47.30 130.88 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 0.44 243.92 47.30 270.07 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5270 definition: xcompl = 1 - (RELH_avg/100) TdC = -9.5527 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 = 0.4103 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5897 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.5117 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 = 3.3639 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.2787 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.101 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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