Detailed Weather Data for Project: TOMS

Date Time TAIR WSPD RELH SRAD 06Nov2017 8 a.m. 44.46 11.97 87.00 24.25 06Nov2017 9 a.m. 45.20 11.48 85.67 97.33 06Nov2017 10 a.m. 46.71 12.53 82.00 143.00 06Nov2017 11 a.m. 47.60 14.17 79.33 184.33 06Nov2017 12 p.m. 49.73 12.30 76.00 293.00 06Nov2017 1 p.m. 51.68 10.44 72.67 549.00 06Nov2017 2 p.m. 54.23 7.89 67.50 579.50 06Nov2017 3 p.m. 54.95 6.99 66.00 437.75 06Nov2017 4 p.m. 56.07 6.26 62.25 289.75 06Nov2017 5 p.m. 54.59 7.44 64.75 108.50 06Nov2017 6 p.m. 50.54 9.39 74.00 0.00 06Nov2017 7 p.m. 46.58 10.51 80.00 0.00 06Nov2017 8 p.m. 43.88 7.38 84.00 0.00 06Nov2017 9 p.m. 43.16 10.07 85.50 0.00 06Nov2017 10 p.m. 42.20 7.46 86.67 0.00 06Nov2017 11 p.m. 42.03 7.72 85.50 0.00 07Nov2017 12 a.m. 41.90 7.94 85.25 0.00 07Nov2017 1 a.m. 41.54 11.46 85.75 0.00 07Nov2017 2 a.m. 41.54 12.97 88.75 0.00 07Nov2017 3 a.m. 42.02 12.08 87.67 0.00 07Nov2017 4 a.m. 42.30 12.64 86.00 0.00 07Nov2017 5 a.m. 42.44 13.87 85.00 0.00 07Nov2017 6 a.m. 42.66 15.49 85.50 0.00 07Nov2017 7 a.m. 42.44 13.76 82.50 1.00 Accuml. Values 1110.45 254.21 1925.26 2707.41 Num. Valid Values 24 24 24 24 Avg. Values 46.27 10.59 80.22 112.81 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 7.93 409.02 80.22 232.78 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1978 definition: xcompl = 1 - (RELH_avg/100) TdC = 4.7410 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 = 0.5248 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4752 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.3868 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 = 2.1119 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.1010 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.087 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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