Detailed Weather Data for Project: DENI

Date Time TAIR WSPD RELH SRAD 03Dec2017 8 a.m. 59.77 7.89 81.62 24.00 03Dec2017 9 a.m. 60.53 6.86 81.19 74.00 03Dec2017 10 a.m. 66.15 6.56 70.08 480.00 03Dec2017 11 a.m. 70.75 9.18 64.16 562.00 03Dec2017 12 p.m. 73.51 12.11 60.68 424.00 03Dec2017 1 p.m. 74.26 15.17 58.17 323.00 03Dec2017 2 p.m. 76.48 9.70 53.91 284.00 03Dec2017 3 p.m. 76.59 12.05 48.10 398.00 03Dec2017 4 p.m. 76.48 9.70 52.50 311.00 03Dec2017 5 p.m. 73.74 9.31 62.64 43.00 03Dec2017 6 p.m. 71.10 9.59 70.27 0.00 03Dec2017 7 p.m. 61.65 18.97 96.52 0.00 03Dec2017 8 p.m. 70.54 8.02 68.25 0.00 03Dec2017 9 p.m. 69.46 12.93 59.58 0.00 03Dec2017 10 p.m. 67.69 8.73 61.97 0.00 03Dec2017 11 p.m. 65.93 9.26 72.77 0.00 04Dec2017 12 a.m. 64.51 8.20 82.36 0.00 04Dec2017 1 a.m. 65.39 10.48 85.71 0.00 04Dec2017 2 a.m. 65.93 7.75 84.97 0.00 04Dec2017 3 a.m. 66.15 6.54 84.61 0.00 04Dec2017 4 a.m. 66.58 6.62 85.76 0.00 04Dec2017 5 a.m. 66.92 6.21 86.39 0.00 04Dec2017 6 a.m. 66.70 7.12 90.42 0.00 04Dec2017 7 a.m. 67.03 7.45 90.23 0.00 Accuml. Values 1643.83 226.40 1752.86 2923.00 Num. Valid Values 24 24 24 24 Avg. Values 68.49 9.43 73.04 121.79 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 20.27 364.28 73.04 251.32 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2696 definition: xcompl = 1 - (RELH_avg/100) TdC = 15.3658 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 = 0.6899 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3101 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.1914 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 = 6.3181 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 7.4769 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.151 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.