Detailed Weather Data for Project: EUFA

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 74.61 7.86 76.43 63.00 05Nov2017 9 a.m. 77.47 8.59 68.80 243.00 05Nov2017 10 a.m. 79.23 9.18 61.29 359.00 05Nov2017 11 a.m. 79.45 8.68 58.61 435.00 05Nov2017 12 p.m. 80.76 8.69 54.39 623.00 05Nov2017 1 p.m. 82.31 11.55 47.50 565.00 05Nov2017 2 p.m. 80.33 8.95 52.20 525.00 05Nov2017 3 p.m. 75.81 5.83 62.39 428.00 05Nov2017 4 p.m. 76.03 2.01 39.13 284.00 05Nov2017 5 p.m. 69.12 0.82 57.14 131.00 05Nov2017 6 p.m. 62.42 1.14 66.30 8.00 05Nov2017 7 p.m. 48.90 2.17 91.15 0.00 05Nov2017 8 p.m. 57.79 2.93 70.82 0.00 05Nov2017 9 p.m. 57.25 2.71 71.67 0.00 05Nov2017 10 p.m. 56.37 3.13 70.76 0.00 05Nov2017 11 p.m. 56.59 2.44 71.00 0.00 06Nov2017 12 a.m. 56.14 1.43 72.64 0.00 06Nov2017 1 a.m. 56.48 1.59 73.02 0.00 06Nov2017 2 a.m. 54.82 1.02 76.79 0.00 06Nov2017 3 a.m. 53.83 1.60 81.00 0.00 06Nov2017 4 a.m. 54.84 0.70 77.41 0.00 06Nov2017 5 a.m. 54.73 0.17 78.21 0.00 06Nov2017 6 a.m. 55.71 0.12 74.78 0.00 06Nov2017 7 a.m. 55.83 0.36 73.38 1.00 Accuml. Values 1556.83 93.67 1626.81 3665.00 Num. Valid Values 24 24 24 24 Avg. Values 64.87 3.90 67.78 152.71 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 18.26 150.72 67.78 315.12 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3222 definition: xcompl = 1 - (RELH_avg/100) TdC = 12.2952 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 = 0.6660 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3340 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.9445 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 = 6.6760 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 4.5561 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.137 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.