Detailed Weather Data for Project: FSUP

Date Time TAIR WSPD RELH SRAD 04Mar2018 8 a.m. 54.21 17.60 99.46 33.90 04Mar2018 9 a.m. 56.75 20.40 93.12 260.00 04Mar2018 10 a.m. 58.96 21.40 82.33 462.00 04Mar2018 11 a.m. 60.85 22.10 74.54 649.80 04Mar2018 12 p.m. 62.76 20.20 69.14 545.10 04Mar2018 1 p.m. 64.76 19.10 64.74 708.20 04Mar2018 2 p.m. 64.47 17.20 67.33 822.10 04Mar2018 3 p.m. 65.35 18.40 63.96 764.40 04Mar2018 4 p.m. 64.74 19.20 67.10 558.40 04Mar2018 5 p.m. 65.07 20.00 66.28 406.40 04Mar2018 6 p.m. 64.92 19.70 71.63 172.30 04Mar2018 7 p.m. 51.69 6.00 10.28 12.80 04Mar2018 8 p.m. 61.61 19.00 89.17 0.00 04Mar2018 9 p.m. 61.21 18.80 91.66 0.00 04Mar2018 10 p.m. 61.41 19.70 90.15 0.00 04Mar2018 11 p.m. 60.49 18.70 91.71 0.00 05Mar2018 12 a.m. 59.67 17.40 91.73 0.00 05Mar2018 1 a.m. 57.63 16.10 92.06 0.00 05Mar2018 2 a.m. 56.50 13.30 64.23 0.00 05Mar2018 3 a.m. 51.06 26.20 37.10 0.00 05Mar2018 4 a.m. 46.00 21.70 43.98 0.00 05Mar2018 5 a.m. 43.72 22.00 44.83 0.00 05Mar2018 6 a.m. 41.79 21.20 47.63 0.00 05Mar2018 7 a.m. 39.72 14.70 53.60 0.00 Accuml. Values 1375.37 450.10 1667.76 5395.40 Num. Valid Values 24 24 24 24 Avg. Values 57.31 18.75 69.49 224.81 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 14.06 724.21 69.49 463.90 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3051 definition: xcompl = 1 - (RELH_avg/100) TdC = 8.6331 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 = 0.6120 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3880 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.6952 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 = 4.8508 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 10.1146 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.268 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.