Detailed Weather Data for Project: KEMP

Date Time TAIR WSPD RELH SRAD 07Nov2017 8 a.m. 44.85 9.90 73.83 3.00 07Nov2017 9 a.m. 46.27 10.86 70.34 35.00 07Nov2017 10 a.m. 48.58 11.51 56.23 142.00 07Nov2017 11 a.m. 52.75 10.76 45.79 262.00 07Nov2017 12 p.m. 55.06 10.21 42.07 501.00 07Nov2017 1 p.m. 54.84 12.33 37.98 697.00 07Nov2017 2 p.m. 56.05 13.22 30.04 483.00 07Nov2017 3 p.m. 55.51 12.10 30.22 619.00 07Nov2017 4 p.m. 54.19 12.23 31.38 345.00 07Nov2017 5 p.m. 52.54 14.82 31.63 186.00 07Nov2017 6 p.m. 49.68 11.67 35.84 57.00 07Nov2017 7 p.m. 42.98 2.95 68.57 0.00 07Nov2017 8 p.m. 48.25 8.15 45.85 0.00 07Nov2017 9 p.m. 48.04 7.89 47.99 0.00 07Nov2017 10 p.m. 47.80 6.44 43.90 1.00 07Nov2017 11 p.m. 46.27 11.80 43.35 0.00 08Nov2017 12 a.m. 44.96 9.85 44.94 0.00 08Nov2017 1 a.m. 43.97 11.95 46.53 0.00 08Nov2017 2 a.m. 43.30 11.38 49.02 0.00 08Nov2017 3 a.m. 41.77 8.02 55.50 0.00 08Nov2017 4 a.m. 41.00 10.99 63.13 0.00 08Nov2017 5 a.m. 38.91 8.67 80.47 0.00 08Nov2017 6 a.m. 38.25 7.06 85.10 1.00 08Nov2017 7 a.m. 38.14 7.19 86.21 1.00 Accuml. Values 1133.98 241.95 1245.91 3333.00 Num. Valid Values 24 24 24 24 Avg. Values 47.25 10.08 51.91 138.88 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 8.47 389.30 51.91 286.57 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4809 definition: xcompl = 1 - (RELH_avg/100) TdC = -0.8540 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 = 0.5328 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4672 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.0296 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 = 5.3528 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 6.7794 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.167 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.