Detailed Weather Data for Project: TOMS

Date Time TAIR WSPD RELH SRAD 04Nov2017 8 a.m. 49.19 5.26 97.00 3.50 04Nov2017 9 a.m. 52.88 5.03 96.00 138.75 04Nov2017 10 a.m. 55.82 8.13 90.33 165.33 04Nov2017 11 a.m. 59.31 7.77 83.00 341.25 04Nov2017 12 p.m. 65.00 10.66 73.33 520.00 04Nov2017 1 p.m. 72.05 11.24 59.50 689.00 04Nov2017 2 p.m. 77.24 13.72 50.00 695.67 04Nov2017 3 p.m. 82.85 15.55 38.75 642.50 04Nov2017 4 p.m. 84.87 16.72 32.75 524.00 04Nov2017 5 p.m. 85.32 16.55 24.25 344.25 04Nov2017 6 p.m. 80.55 11.02 36.75 145.50 04Nov2017 7 p.m. 73.94 10.07 50.00 0.00 04Nov2017 8 p.m. 73.22 11.63 46.00 0.00 04Nov2017 9 p.m. 74.03 10.96 43.00 0.00 04Nov2017 10 p.m. 71.30 10.74 46.33 0.00 04Nov2017 11 p.m. 72.90 8.61 44.25 0.00 05Nov2017 12 a.m. 70.29 9.23 56.50 0.00 05Nov2017 1 a.m. 68.49 10.40 61.00 0.00 05Nov2017 2 a.m. 65.60 8.95 66.67 0.00 05Nov2017 3 a.m. 66.86 12.30 59.67 0.00 05Nov2017 4 a.m. 64.49 13.03 61.75 0.00 05Nov2017 5 a.m. 63.68 15.43 57.50 0.00 05Nov2017 6 a.m. 62.72 15.29 54.00 0.00 05Nov2017 7 a.m. 60.08 12.75 58.50 1.50 Accuml. Values 1652.68 271.04 1386.83 4211.25 Num. Valid Values 24 24 24 24 Avg. Values 68.86 11.29 57.78 175.47 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 20.48 436.10 57.78 362.08 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4222 definition: xcompl = 1 - (RELH_avg/100) TdC = 11.9612 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 = 0.6923 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3077 definition: del_lambda2 = 1 - del_lambda1 Qn = 3.7641 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 = 10.0896 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 12.8805 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.259 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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