Detailed Weather Data for Project: TORO

Date Time TAIR WSPD RELH SRAD 08Nov2017 8 a.m. 32.13 1.50 84.42 35.10 08Nov2017 9 a.m. 34.14 1.90 80.84 218.00 08Nov2017 10 a.m. 41.23 2.30 64.27 407.90 08Nov2017 11 a.m. 45.72 1.60 53.08 508.10 08Nov2017 12 p.m. 49.60 1.60 41.27 556.50 08Nov2017 1 p.m. 52.07 1.20 36.15 549.20 08Nov2017 2 p.m. 52.32 3.00 34.13 482.50 08Nov2017 3 p.m. 53.37 2.50 33.26 369.80 08Nov2017 4 p.m. 54.75 1.60 30.50 225.10 08Nov2017 5 p.m. 53.26 2.50 30.38 62.20 08Nov2017 6 p.m. 48.70 0.20 43.81 0.00 08Nov2017 7 p.m. 45.41 3.60 61.33 0.00 08Nov2017 8 p.m. 37.00 0.20 68.54 0.00 08Nov2017 9 p.m. 34.56 0.90 77.07 0.00 08Nov2017 10 p.m. 32.88 0.90 81.94 0.00 08Nov2017 11 p.m. 30.85 1.80 87.93 0.00 09Nov2017 12 a.m. 29.70 2.10 91.09 0.00 09Nov2017 1 a.m. 29.37 2.30 93.70 0.00 09Nov2017 2 a.m. 28.65 1.50 92.10 0.00 09Nov2017 3 a.m. 27.99 1.60 94.33 0.00 09Nov2017 4 a.m. 28.56 0.30 92.66 0.00 09Nov2017 5 a.m. 30.38 0.50 92.27 0.00 09Nov2017 6 a.m. 31.39 1.20 92.52 0.00 09Nov2017 7 a.m. 27.46 0.60 93.55 0.00 Accuml. Values 931.49 37.40 1651.14 3414.40 Num. Valid Values 24 24 24 24 Avg. Values 38.81 1.56 68.80 142.27 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 3.78 60.18 68.80 293.57 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3120 definition: xcompl = 1 - (RELH_avg/100) TdC = -1.3799 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 = 0.4619 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5381 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.8958 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 = 2.4982 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.3307 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.063 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.