Detailed Weather Data for Project: TOMS

Date Time TAIR WSPD RELH SRAD 04Dec2017 8 a.m. 61.88 15.15 96.00 5.50 04Dec2017 9 a.m. 61.82 17.60 94.67 54.00 04Dec2017 10 a.m. 63.81 18.62 86.50 218.25 04Dec2017 11 a.m. 67.22 21.62 73.00 446.33 04Dec2017 12 p.m. 69.53 20.08 61.25 479.75 04Dec2017 1 p.m. 71.90 17.30 48.67 420.67 04Dec2017 2 p.m. 72.41 17.06 34.00 360.50 04Dec2017 3 p.m. 73.85 13.03 26.75 367.75 04Dec2017 4 p.m. 72.99 9.39 26.75 191.25 04Dec2017 5 p.m. 64.94 21.42 33.50 80.50 04Dec2017 6 p.m. 59.00 20.36 30.00 0.00 04Dec2017 7 p.m. 57.38 23.26 28.00 0.00 04Dec2017 8 p.m. 55.40 28.41 25.50 0.00 04Dec2017 9 p.m. 53.12 26.84 26.33 0.00 04Dec2017 10 p.m. 50.90 28.04 34.67 0.00 04Dec2017 11 p.m. 46.94 29.53 37.00 0.00 05Dec2017 12 a.m. 45.59 33.22 40.25 0.00 05Dec2017 1 a.m. 43.29 28.58 46.25 0.00 05Dec2017 2 a.m. 41.45 26.79 44.75 0.00 05Dec2017 3 a.m. 40.82 29.08 35.67 0.00 05Dec2017 4 a.m. 39.60 28.63 29.75 0.00 05Dec2017 5 a.m. 37.85 27.40 26.00 0.00 05Dec2017 6 a.m. 37.17 29.69 24.50 0.00 05Dec2017 7 a.m. 36.50 21.47 23.50 0.00 Accuml. Values 1325.36 552.57 1033.26 2624.50 Num. Valid Values 24 24 24 24 Avg. Values 55.22 23.02 43.05 109.35 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 12.90 889.09 43.05 225.65 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5695 definition: xcompl = 1 - (RELH_avg/100) TdC = 0.5620 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 = 0.5963 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4037 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.5047 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 = 8.5332 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 19.7816 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.350 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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