Detailed Weather Data for Project: PENS

Date Time TAIR WSPD RELH SRAD 07Nov2017 8 a.m. 45.09 13.12 100.32 7.56 07Nov2017 9 a.m. 45.36 14.01 100.32 47.58 07Nov2017 10 a.m. 45.23 13.17 100.21 56.53 07Nov2017 11 a.m. 45.18 13.03 99.55 71.67 07Nov2017 12 p.m. 45.54 13.40 96.70 63.84 07Nov2017 1 p.m. 45.41 14.08 96.34 55.03 07Nov2017 2 p.m. 45.48 14.07 95.83 60.63 07Nov2017 3 p.m. 45.72 14.24 93.46 45.63 07Nov2017 4 p.m. 46.24 14.21 90.51 20.62 07Nov2017 5 p.m. 46.17 14.89 89.70 3.61 07Nov2017 6 p.m. 45.48 15.40 91.04 0.00 07Nov2017 7 p.m. 51.75 3.26 53.24 0.00 07Nov2017 8 p.m. 44.91 13.35 92.15 0.00 07Nov2017 9 p.m. 45.09 13.23 93.26 0.00 07Nov2017 10 p.m. 45.19 12.85 87.24 0.00 07Nov2017 11 p.m. 45.36 12.41 82.48 0.00 08Nov2017 12 a.m. 45.66 12.78 77.83 0.00 08Nov2017 1 a.m. 46.02 11.75 76.08 0.00 08Nov2017 2 a.m. 46.11 10.77 75.42 0.00 08Nov2017 3 a.m. 45.64 7.68 72.96 0.00 08Nov2017 4 a.m. 46.22 8.85 73.85 0.00 08Nov2017 5 a.m. 45.23 8.84 79.14 0.00 08Nov2017 6 a.m. 43.54 10.67 84.40 0.00 08Nov2017 7 a.m. 42.64 12.86 87.77 0.00 Accuml. Values 1094.23 292.92 2089.80 432.70 Num. Valid Values 24 24 24 24 Avg. Values 45.59 12.20 87.08 18.03 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 7.55 471.31 87.08 37.20 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1292 definition: xcompl = 1 - (RELH_avg/100) TdC = 5.5239 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 = 0.5192 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4808 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.6663 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 = 1.3597 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.3416 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.031 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.