Detailed Weather Data for Project: TOMS

Date Time TAIR WSPD RELH SRAD 03Dec2017 8 a.m. 51.44 0.62 89.25 20.50 03Dec2017 9 a.m. 53.36 3.21 87.33 120.00 03Dec2017 10 a.m. 54.77 3.80 82.25 90.25 03Dec2017 11 a.m. 59.42 9.17 67.67 215.33 03Dec2017 12 p.m. 64.31 11.30 61.00 311.25 03Dec2017 1 p.m. 70.34 15.81 55.33 556.00 03Dec2017 2 p.m. 72.77 18.90 55.25 532.75 03Dec2017 3 p.m. 74.03 20.19 54.00 463.75 03Dec2017 4 p.m. 73.13 19.80 53.75 278.50 03Dec2017 5 p.m. 71.01 19.07 60.75 83.75 03Dec2017 6 p.m. 69.26 18.34 63.00 0.00 03Dec2017 7 p.m. 66.56 15.66 71.00 0.00 03Dec2017 8 p.m. 64.40 13.42 78.00 0.00 03Dec2017 9 p.m. 62.78 15.66 86.00 0.00 03Dec2017 10 p.m. 62.24 18.34 90.00 0.00 03Dec2017 11 p.m. 61.65 19.18 93.50 0.00 04Dec2017 12 a.m. 61.74 17.39 94.00 0.00 04Dec2017 1 a.m. 61.52 17.00 95.25 0.00 04Dec2017 2 a.m. 61.65 18.68 95.75 0.00 04Dec2017 3 a.m. 61.94 17.97 95.67 0.00 04Dec2017 4 a.m. 62.69 15.99 94.00 0.00 04Dec2017 5 a.m. 63.41 19.13 91.50 0.00 04Dec2017 6 a.m. 63.18 20.24 92.25 0.00 04Dec2017 7 a.m. 62.42 17.11 94.50 0.00 Accuml. Values 1530.02 365.98 1901.00 2672.08 Num. Valid Values 24 24 24 24 Avg. Values 63.75 15.25 79.21 111.34 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 17.64 588.86 79.21 229.75 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2079 definition: xcompl = 1 - (RELH_avg/100) TdC = 14.0338 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 = 0.6584 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3416 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.7691 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 = 4.1532 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 7.4488 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.146 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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