Detailed Weather Data for Project: FSUP

Date Time TAIR WSPD RELH SRAD 04Nov2017 8 a.m. 39.78 0.80 99.89 0.00 04Nov2017 9 a.m. 39.97 1.00 99.94 10.80 04Nov2017 10 a.m. 40.28 2.30 100.00 70.00 04Nov2017 11 a.m. 41.16 3.10 100.08 137.20 04Nov2017 12 p.m. 42.21 5.70 100.15 181.30 04Nov2017 1 p.m. 45.05 7.10 99.28 469.50 04Nov2017 2 p.m. 53.65 3.30 74.59 706.40 04Nov2017 3 p.m. 57.40 2.90 63.59 418.40 04Nov2017 4 p.m. 60.84 2.10 53.30 346.70 04Nov2017 5 p.m. 65.91 1.50 41.44 211.70 04Nov2017 6 p.m. 68.31 2.30 38.24 89.30 04Nov2017 7 p.m. 65.44 4.90 43.50 3.30 04Nov2017 8 p.m. 44.49 3.00 77.05 0.00 04Nov2017 9 p.m. 59.04 4.70 66.04 0.00 04Nov2017 10 p.m. 57.72 4.60 70.10 0.00 04Nov2017 11 p.m. 56.48 2.50 72.57 0.00 05Nov2017 12 a.m. 58.17 4.60 56.01 0.00 05Nov2017 1 a.m. 58.50 7.90 52.19 0.00 05Nov2017 2 a.m. 58.05 6.30 47.96 0.00 05Nov2017 3 a.m. 55.33 3.40 52.06 0.00 05Nov2017 4 a.m. 54.16 2.80 58.56 0.00 05Nov2017 5 a.m. 55.53 2.20 52.00 0.00 05Nov2017 6 a.m. 55.00 4.40 51.99 0.00 05Nov2017 7 a.m. 48.83 6.70 70.64 0.00 Accuml. Values 1281.29 90.10 1641.17 2644.60 Num. Valid Values 24 24 24 24 Avg. Values 53.39 3.75 68.38 110.19 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 11.88 144.97 68.38 227.38 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3162 definition: xcompl = 1 - (RELH_avg/100) TdC = 6.3082 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 = 0.5821 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4179 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.4826 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 = 4.3685 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.0760 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.085 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.