Detailed Weather Data for Project: TRUS

Date Time TAIR WSPD RELH SRAD 04Mar2018 8 a.m. 62.31 11.07 91.89 2.00 04Mar2018 9 a.m. 62.31 13.09 90.49 27.00 04Mar2018 10 a.m. 63.97 13.73 87.31 49.00 04Mar2018 11 a.m. 65.95 14.10 82.61 75.00 04Mar2018 12 p.m. 66.94 16.54 79.44 83.00 04Mar2018 1 p.m. 70.21 16.76 70.63 110.00 04Mar2018 2 p.m. 73.53 19.61 61.67 781.00 04Mar2018 3 p.m. 75.18 19.13 57.46 807.00 04Mar2018 4 p.m. 75.40 20.26 56.84 626.00 04Mar2018 5 p.m. 78.26 21.57 49.33 398.00 04Mar2018 6 p.m. 76.06 24.46 53.06 246.00 04Mar2018 7 p.m. 61.56 5.99 6.23 112.00 04Mar2018 8 p.m. 71.01 20.60 62.58 0.00 04Mar2018 9 p.m. 70.12 22.38 63.56 0.00 04Mar2018 10 p.m. 69.13 18.34 65.21 0.00 04Mar2018 11 p.m. 66.06 15.12 68.57 0.00 05Mar2018 12 a.m. 63.30 10.97 72.41 0.00 05Mar2018 1 a.m. 62.55 13.19 69.18 0.00 05Mar2018 2 a.m. 61.21 16.43 61.73 0.00 05Mar2018 3 a.m. 60.67 9.96 60.20 0.00 05Mar2018 4 a.m. 65.62 13.47 45.73 0.00 05Mar2018 5 a.m. 63.09 16.43 24.12 0.00 05Mar2018 6 a.m. 59.36 11.76 18.13 0.00 05Mar2018 7 a.m. 52.32 10.44 34.44 0.00 Accuml. Values 1596.13 375.40 1432.82 3316.00 Num. Valid Values 24 24 24 24 Avg. Values 66.51 15.64 59.70 138.17 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 19.17 604.02 59.70 285.11 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4030 definition: xcompl = 1 - (RELH_avg/100) TdC = 11.2291 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 = 0.6770 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3230 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.5901 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 = 8.8756 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 14.8322 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.258 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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