Detailed Weather Data for Project: TOMS

Date Time TAIR WSPD RELH SRAD 31Dec2017 8 a.m. 14.45 22.65 86.75 2.25 31Dec2017 9 a.m. 13.82 20.43 80.67 32.67 31Dec2017 10 a.m. 13.37 21.19 73.75 86.50 31Dec2017 11 a.m. 13.22 20.06 70.67 134.33 31Dec2017 12 p.m. 13.37 15.38 67.75 159.75 31Dec2017 1 p.m. 14.30 16.03 65.00 202.33 31Dec2017 2 p.m. 16.39 18.90 56.00 320.25 31Dec2017 3 p.m. 18.68 19.01 48.75 482.75 31Dec2017 4 p.m. 18.50 19.13 44.00 326.00 31Dec2017 5 p.m. 17.29 18.68 44.25 124.25 31Dec2017 6 p.m. 15.44 19.68 44.00 0.00 31Dec2017 7 p.m. 14.18 14.76 45.00 0.00 31Dec2017 8 p.m. 13.28 14.54 46.00 0.00 31Dec2017 9 p.m. 13.28 12.97 46.50 0.00 31Dec2017 10 p.m. 13.10 13.57 48.33 0.00 31Dec2017 11 p.m. 12.65 13.81 52.25 0.00 01Jan2018 12 a.m. 11.62 14.48 55.50 0.00 01Jan2018 1 a.m. 10.67 14.32 57.25 0.00 01Jan2018 2 a.m. 10.04 17.45 57.25 0.00 01Jan2018 3 a.m. 9.44 16.11 58.00 0.00 01Jan2018 4 a.m. 8.51 17.22 59.75 0.00 01Jan2018 5 a.m. 7.16 18.12 62.50 0.00 01Jan2018 6 a.m. 6.35 17.73 63.50 0.00 01Jan2018 7 a.m. 5.63 16.11 65.50 0.00 Accuml. Values 304.74 412.33 1398.92 1871.08 Num. Valid Values 24 24 24 24 Avg. Values 12.70 17.18 58.29 77.96 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -10.72 663.44 58.29 160.88 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4171 definition: xcompl = 1 - (RELH_avg/100) TdC = -17.3176 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 = 0.2473 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7527 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.2436 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 = 1.1362 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.6227 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.080 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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