Detailed Weather Data for Project: HUDS

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 73.40 2.20 80.54 61.20 05Nov2017 9 a.m. 74.53 2.90 77.55 203.60 05Nov2017 10 a.m. 75.85 3.40 73.24 304.50 05Nov2017 11 a.m. 77.90 3.10 67.24 356.90 05Nov2017 12 p.m. 79.05 3.60 59.88 140.80 05Nov2017 1 p.m. 80.20 6.00 52.61 180.30 05Nov2017 2 p.m. 72.77 11.10 59.97 96.60 05Nov2017 3 p.m. 66.34 10.30 66.84 35.90 05Nov2017 4 p.m. 61.90 10.30 73.38 57.50 05Nov2017 5 p.m. 58.89 9.80 76.35 12.00 05Nov2017 6 p.m. 57.09 7.40 77.55 0.00 05Nov2017 7 p.m. 45.01 5.90 95.51 0.00 05Nov2017 8 p.m. 55.58 6.90 78.10 0.00 05Nov2017 9 p.m. 55.36 7.00 78.45 0.00 05Nov2017 10 p.m. 55.40 8.30 78.41 0.00 05Nov2017 11 p.m. 55.09 8.90 79.24 0.00 06Nov2017 12 a.m. 54.86 8.30 81.14 0.00 06Nov2017 1 a.m. 54.97 10.00 81.58 0.00 06Nov2017 2 a.m. 54.63 9.10 80.66 0.00 06Nov2017 3 a.m. 54.64 7.10 81.14 0.00 06Nov2017 4 a.m. 54.79 7.20 81.54 0.00 06Nov2017 5 a.m. 54.21 5.90 81.99 0.00 06Nov2017 6 a.m. 53.49 6.70 83.55 0.00 06Nov2017 7 a.m. 52.68 5.90 84.76 0.00 Accuml. Values 1478.66 167.30 1831.22 1449.30 Num. Valid Values 24 24 24 24 Avg. Values 61.61 6.97 76.30 60.39 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 16.45 269.19 76.30 124.61 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2370 definition: xcompl = 1 - (RELH_avg/100) TdC = 12.3197 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 = 0.6434 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3566 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.4134 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 = 4.3874 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 4.4112 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.072 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.