Detailed Weather Data for Project: TOMS

Date Time TAIR WSPD RELH SRAD 03Mar2018 8 a.m. 46.98 6.43 83.50 81.50 03Mar2018 9 a.m. 50.96 7.01 75.67 299.67 03Mar2018 10 a.m. 55.31 11.46 72.50 458.75 03Mar2018 11 a.m. 59.27 14.88 67.50 615.50 03Mar2018 12 p.m. 64.94 17.00 59.25 663.25 03Mar2018 1 p.m. 66.20 18.72 57.00 431.67 03Mar2018 2 p.m. 68.22 20.52 52.00 555.25 03Mar2018 3 p.m. 70.28 21.62 45.67 634.67 03Mar2018 4 p.m. 71.01 21.75 42.50 559.75 03Mar2018 5 p.m. 69.89 22.59 43.00 362.00 03Mar2018 6 p.m. 66.20 20.36 47.00 47.00 03Mar2018 7 p.m. 62.42 14.76 54.00 0.00 03Mar2018 8 p.m. 60.80 13.42 58.00 0.00 03Mar2018 9 p.m. 59.54 11.71 64.67 0.00 03Mar2018 10 p.m. 60.38 13.57 69.00 0.00 03Mar2018 11 p.m. 60.98 19.68 72.00 0.00 04Mar2018 12 a.m. 60.98 16.89 74.00 0.00 04Mar2018 1 a.m. 60.21 14.88 76.00 0.00 04Mar2018 2 a.m. 59.67 15.83 75.75 0.00 04Mar2018 3 a.m. 59.24 14.76 76.67 0.00 04Mar2018 4 a.m. 58.77 14.71 83.25 0.00 04Mar2018 5 a.m. 58.19 14.54 89.50 0.00 04Mar2018 6 a.m. 56.75 14.09 97.25 0.00 04Mar2018 7 a.m. 55.94 14.32 99.50 0.00 Accuml. Values 1463.13 375.50 1635.18 4709.01 Num. Valid Values 24 24 24 24 Avg. Values 60.96 15.65 68.13 196.21 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 16.09 604.18 68.13 404.88 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3187 definition: xcompl = 1 - (RELH_avg/100) TdC = 10.2925 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 = 0.6388 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3612 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.0330 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 = 5.7662 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 10.1500 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.246 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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