Detailed Weather Data for Project: WEBB

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 70.03 9.10 84.33 42.60 05Nov2017 9 a.m. 72.36 10.20 78.88 157.00 05Nov2017 10 a.m. 75.94 11.00 67.77 385.70 05Nov2017 11 a.m. 77.52 7.10 60.49 462.20 05Nov2017 12 p.m. 78.60 7.50 57.12 511.80 05Nov2017 1 p.m. 79.20 5.70 56.48 517.10 05Nov2017 2 p.m. 81.30 6.10 47.18 376.30 05Nov2017 3 p.m. 81.55 10.30 40.30 376.30 05Nov2017 4 p.m. 75.56 16.60 40.40 288.40 05Nov2017 5 p.m. 65.68 13.20 63.66 83.60 05Nov2017 6 p.m. 59.09 13.00 73.32 0.00 05Nov2017 7 p.m. 47.43 10.10 99.15 0.00 05Nov2017 8 p.m. 55.90 8.00 76.70 0.00 05Nov2017 9 p.m. 55.24 6.70 75.09 0.00 05Nov2017 10 p.m. 54.73 5.00 75.12 0.00 05Nov2017 11 p.m. 54.37 4.50 75.98 0.00 06Nov2017 12 a.m. 54.05 3.30 75.50 0.00 06Nov2017 1 a.m. 54.09 2.10 75.17 0.00 06Nov2017 2 a.m. 54.16 2.50 75.19 0.00 06Nov2017 3 a.m. 53.24 1.70 76.47 0.00 06Nov2017 4 a.m. 52.74 2.10 78.70 0.00 06Nov2017 5 a.m. 52.21 3.50 80.74 0.00 06Nov2017 6 a.m. 52.03 3.70 80.18 0.00 06Nov2017 7 a.m. 52.07 4.00 81.11 0.00 Accuml. Values 1509.10 167.00 1695.03 3201.00 Num. Valid Values 24 24 24 24 Avg. Values 62.88 6.96 70.63 133.38 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 17.15 268.70 70.63 275.22 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2937 definition: xcompl = 1 - (RELH_avg/100) TdC = 11.8508 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 = 0.6523 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3477 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.3400 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 = 5.6785 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 5.5288 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.136 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.