Detailed Weather Data for Project: TOMS

Date Time TAIR WSPD RELH SRAD 02Dec2017 8 a.m. 47.84 2.63 94.50 20.75 02Dec2017 9 a.m. 52.34 2.76 88.33 146.00 02Dec2017 10 a.m. 56.34 5.76 79.75 286.00 02Dec2017 11 a.m. 59.18 6.26 73.00 416.67 02Dec2017 12 p.m. 61.56 6.15 65.75 537.25 02Dec2017 1 p.m. 64.64 3.43 58.33 589.33 02Dec2017 2 p.m. 66.87 5.31 52.50 523.50 02Dec2017 3 p.m. 67.73 4.47 50.75 405.50 02Dec2017 4 p.m. 67.28 5.42 51.00 276.50 02Dec2017 5 p.m. 64.89 5.37 53.75 100.75 02Dec2017 6 p.m. 59.54 2.68 68.00 0.00 02Dec2017 7 p.m. 57.38 2.46 71.00 0.00 02Dec2017 8 p.m. 57.38 4.03 73.00 0.00 02Dec2017 9 p.m. 55.94 5.03 76.00 0.00 02Dec2017 10 p.m. 54.44 3.28 79.33 0.00 02Dec2017 11 p.m. 53.87 3.52 81.50 0.00 03Dec2017 12 a.m. 54.14 2.40 81.25 0.00 03Dec2017 1 a.m. 52.56 4.31 85.50 0.00 03Dec2017 2 a.m. 52.34 2.68 86.25 0.00 03Dec2017 3 a.m. 52.28 4.40 87.33 0.00 03Dec2017 4 a.m. 52.74 4.14 86.00 0.00 03Dec2017 5 a.m. 51.98 3.58 87.00 0.00 03Dec2017 6 a.m. 51.57 2.74 88.00 0.00 03Dec2017 7 a.m. 51.53 4.81 89.50 0.00 Accuml. Values 1366.36 97.62 1807.32 3302.25 Num. Valid Values 24 24 24 24 Avg. Values 56.93 4.07 75.31 137.59 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 13.85 157.07 75.31 283.93 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2469 definition: xcompl = 1 - (RELH_avg/100) TdC = 9.6041 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 = 0.6092 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3908 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.2711 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 = 3.8756 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.8840 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.099 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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