Detailed Weather Data for Project: TRUS

Date Time TAIR WSPD RELH SRAD 08Nov2017 8 a.m. 37.60 9.23 86.09 3.00 08Nov2017 9 a.m. 37.92 8.48 88.90 18.00 08Nov2017 10 a.m. 38.25 8.38 90.06 28.00 08Nov2017 11 a.m. 39.24 10.67 83.95 60.00 08Nov2017 12 p.m. 40.68 10.75 78.59 99.00 08Nov2017 1 p.m. 41.22 6.58 75.16 74.00 08Nov2017 2 p.m. 42.10 5.81 73.45 74.00 08Nov2017 3 p.m. 42.76 6.31 73.33 75.00 08Nov2017 4 p.m. 42.31 4.59 73.15 78.00 08Nov2017 5 p.m. 42.98 3.89 72.17 48.00 08Nov2017 6 p.m. 43.20 3.00 70.77 13.00 08Nov2017 7 p.m. 53.96 6.99 67.96 0.00 08Nov2017 8 p.m. 43.52 2.73 68.14 0.00 08Nov2017 9 p.m. 42.21 4.74 68.93 0.00 08Nov2017 10 p.m. 38.48 4.68 80.30 1.00 08Nov2017 11 p.m. 41.13 2.96 78.90 1.00 09Nov2017 12 a.m. 38.91 3.54 81.45 1.00 09Nov2017 1 a.m. 39.69 4.57 83.77 1.00 09Nov2017 2 a.m. 40.33 4.96 81.33 1.00 09Nov2017 3 a.m. 37.49 1.42 89.27 1.00 09Nov2017 4 a.m. 37.15 3.14 88.78 1.00 09Nov2017 5 a.m. 34.20 4.36 87.81 2.00 09Nov2017 6 a.m. 32.54 3.61 88.85 1.00 09Nov2017 7 a.m. 34.63 2.17 90.98 1.00 Accuml. Values 962.47 127.56 1922.09 581.00 Num. Valid Values 24 24 24 24 Avg. Values 40.10 5.32 80.09 24.21 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.50 205.24 80.09 49.95 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1991 definition: xcompl = 1 - (RELH_avg/100) TdC = 1.3740 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 = 0.4729 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5271 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.5663 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 = 1.6830 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.6051 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.023 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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