Detailed Weather Data for Project: HEYB

Date Time TAIR WSPD RELH SRAD 04Nov2017 8 a.m. 52.61 1.20 97.09 0.00 04Nov2017 9 a.m. 52.99 1.10 97.23 4.40 04Nov2017 10 a.m. 54.27 0.80 97.24 65.20 04Nov2017 11 a.m. 56.03 1.10 96.01 51.40 04Nov2017 12 p.m. 58.78 2.20 89.63 121.20 04Nov2017 1 p.m. 62.46 2.50 82.89 235.70 04Nov2017 2 p.m. 65.55 2.40 75.75 435.90 04Nov2017 3 p.m. 67.50 2.70 72.90 350.90 04Nov2017 4 p.m. 69.49 3.30 70.08 249.70 04Nov2017 5 p.m. 70.90 1.00 67.31 218.30 04Nov2017 6 p.m. 70.52 1.60 68.54 58.80 04Nov2017 7 p.m. 66.92 4.00 72.47 1.20 04Nov2017 8 p.m. 56.03 12.50 73.88 0.00 04Nov2017 9 p.m. 62.28 1.30 84.32 0.00 04Nov2017 10 p.m. 60.80 0.70 88.94 0.00 04Nov2017 11 p.m. 59.76 1.10 91.43 0.00 05Nov2017 12 a.m. 64.22 1.70 90.19 0.00 05Nov2017 1 a.m. 71.08 2.60 82.58 0.00 05Nov2017 2 a.m. 70.84 2.00 83.13 0.00 05Nov2017 3 a.m. 69.73 1.90 85.78 0.00 05Nov2017 4 a.m. 69.08 2.20 87.55 0.00 05Nov2017 5 a.m. 70.34 2.00 84.82 0.00 05Nov2017 6 a.m. 70.74 2.70 81.52 0.00 05Nov2017 7 a.m. 70.92 4.30 80.49 0.00 Accuml. Values 1543.82 58.90 2001.77 1792.70 Num. Valid Values 24 24 24 24 Avg. Values 64.33 2.45 83.41 74.70 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 17.96 94.77 83.41 154.14 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1659 definition: xcompl = 1 - (RELH_avg/100) TdC = 15.1221 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 = 0.6623 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3377 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.8188 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 = 3.3964 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.0379 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.048 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.