Detailed Weather Data for Project: TORO

Date Time TAIR WSPD RELH SRAD 04Dec2017 8 a.m. 64.76 11.20 79.60 0.00 04Dec2017 9 a.m. 64.78 11.40 80.61 50.50 04Dec2017 10 a.m. 67.10 14.20 75.30 179.00 04Dec2017 11 a.m. 70.02 15.60 67.46 221.40 04Dec2017 12 p.m. 71.92 16.10 59.68 320.90 04Dec2017 1 p.m. 72.81 14.70 52.82 219.60 04Dec2017 2 p.m. 71.94 11.80 47.96 234.00 04Dec2017 3 p.m. 63.63 9.40 39.18 177.80 04Dec2017 4 p.m. 62.35 7.60 35.91 136.80 04Dec2017 5 p.m. 62.96 8.00 33.18 15.80 04Dec2017 6 p.m. 56.50 9.50 42.03 0.00 04Dec2017 7 p.m. 39.24 3.60 33.52 0.00 04Dec2017 8 p.m. 48.13 10.90 41.09 0.00 04Dec2017 9 p.m. 45.23 12.10 43.11 0.00 04Dec2017 10 p.m. 42.85 9.40 48.97 0.00 04Dec2017 11 p.m. 40.55 7.30 52.84 0.00 05Dec2017 12 a.m. 37.27 8.60 51.16 0.00 05Dec2017 1 a.m. 35.40 6.20 48.09 0.00 05Dec2017 2 a.m. 33.98 4.70 47.57 0.00 05Dec2017 3 a.m. 32.70 3.90 49.08 0.00 05Dec2017 4 a.m. 30.47 4.90 47.17 0.00 05Dec2017 5 a.m. 29.61 3.90 48.76 0.00 05Dec2017 6 a.m. 30.13 3.90 49.43 0.00 05Dec2017 7 a.m. 30.70 3.70 47.46 0.00 Accuml. Values 1205.02 212.60 1221.98 1555.80 Num. Valid Values 24 24 24 24 Avg. Values 50.21 8.86 50.92 64.83 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 10.12 342.07 50.92 133.77 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4908 definition: xcompl = 1 - (RELH_avg/100) TdC = 0.3984 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 = 0.5569 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4431 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.3609 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 = 6.1014 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 6.9345 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.129 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.