Detailed Weather Data for Project: MCGE

Date Time TAIR WSPD RELH SRAD 04Mar2018 8 a.m. 53.51 9.79 68.00 12.50 04Mar2018 9 a.m. 53.84 10.89 67.33 39.67 04Mar2018 10 a.m. 54.90 12.64 67.25 79.00 04Mar2018 11 a.m. 55.22 13.65 69.00 114.33 04Mar2018 12 p.m. 54.77 14.48 72.75 184.50 04Mar2018 1 p.m. 54.50 13.94 77.00 172.00 04Mar2018 2 p.m. 54.59 14.20 79.50 211.50 04Mar2018 3 p.m. 55.31 14.04 78.75 145.75 04Mar2018 4 p.m. 55.40 14.20 80.25 129.50 04Mar2018 5 p.m. 55.22 11.97 81.75 57.25 04Mar2018 6 p.m. 54.68 10.51 80.00 3.00 04Mar2018 7 p.m. 54.32 10.96 82.00 0.00 04Mar2018 8 p.m. 53.06 6.49 90.00 0.00 04Mar2018 9 p.m. 52.52 11.86 92.00 0.00 04Mar2018 10 p.m. 52.34 11.41 92.00 0.00 04Mar2018 11 p.m. 52.61 10.57 90.50 0.00 05Mar2018 12 a.m. 53.55 9.90 87.00 0.00 05Mar2018 1 a.m. 54.36 9.95 84.25 0.00 05Mar2018 2 a.m. 55.10 10.07 83.33 0.00 05Mar2018 3 a.m. 55.94 10.07 83.67 0.00 05Mar2018 4 a.m. 56.61 8.61 84.75 0.00 05Mar2018 5 a.m. 57.38 9.51 86.50 0.00 05Mar2018 6 a.m. 58.14 7.33 88.50 0.00 05Mar2018 7 a.m. 58.82 5.14 92.00 3.00 Accuml. Values 1316.69 262.18 1958.08 1152.00 Num. Valid Values 24 24 24 24 Avg. Values 54.86 10.92 81.59 48.00 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 12.70 421.85 81.59 99.05 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1841 definition: xcompl = 1 - (RELH_avg/100) TdC = 9.6471 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 = 0.5935 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4065 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.0360 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 = 2.6964 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.9339 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.064 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.