Detailed Weather Data for Project: FSUP

Date Time TAIR WSPD RELH SRAD 05Mar2018 8 a.m. 37.65 9.30 57.42 67.60 05Mar2018 9 a.m. 41.47 14.00 42.68 304.20 05Mar2018 10 a.m. 46.40 17.50 21.75 543.80 05Mar2018 11 a.m. 48.83 22.40 17.12 740.10 05Mar2018 12 p.m. 50.72 23.90 13.22 868.40 05Mar2018 1 p.m. 52.34 22.50 9.28 918.80 05Mar2018 2 p.m. 53.91 19.90 8.61 908.20 05Mar2018 3 p.m. 55.02 19.80 8.80 815.30 05Mar2018 4 p.m. 55.38 20.00 8.48 653.00 05Mar2018 5 p.m. 55.31 16.40 8.77 447.30 05Mar2018 6 p.m. 54.63 12.90 8.85 165.90 05Mar2018 7 p.m. 46.80 9.80 18.61 9.20 05Mar2018 8 p.m. 48.15 4.40 11.82 0.00 05Mar2018 9 p.m. 46.31 3.80 23.15 0.00 05Mar2018 10 p.m. 40.91 6.90 25.65 0.00 05Mar2018 11 p.m. 38.66 9.30 18.76 0.00 06Mar2018 12 a.m. 37.13 9.50 19.58 0.00 06Mar2018 1 a.m. 35.29 7.50 21.09 0.00 06Mar2018 2 a.m. 33.46 7.20 23.40 0.00 06Mar2018 3 a.m. 32.90 7.90 24.20 0.00 06Mar2018 4 a.m. 31.98 10.00 25.88 0.00 06Mar2018 5 a.m. 31.01 9.80 28.61 0.00 06Mar2018 6 a.m. 27.72 8.10 33.51 0.00 06Mar2018 7 a.m. 27.72 9.10 34.17 0.00 Accuml. Values 1029.68 301.90 513.41 6441.80 Num. Valid Values 24 24 24 24 Avg. Values 42.90 12.58 21.39 268.41 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 6.06 485.76 21.39 553.87 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.7861 definition: xcompl = 1 - (RELH_avg/100) TdC = -14.4765 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 = 0.4967 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5033 definition: del_lambda2 = 1 - del_lambda1 Qn = 5.2402 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 = 7.4331 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 10.6849 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.314 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.