Detailed Weather Data for Project: FGIB

Date Time TAIR WSPD RELH SRAD 08Nov2017 8 a.m. 44.38 1.66 60.13 26.00 08Nov2017 9 a.m. 45.37 1.62 57.99 96.00 08Nov2017 10 a.m. 46.60 2.08 53.42 177.00 08Nov2017 11 a.m. 47.70 1.19 49.39 255.00 08Nov2017 12 p.m. 48.34 0.94 47.74 227.00 08Nov2017 1 p.m. 51.08 0.89 43.52 297.00 08Nov2017 2 p.m. 54.50 1.47 30.16 450.00 08Nov2017 3 p.m. 55.94 1.08 26.37 478.00 08Nov2017 4 p.m. 56.93 1.27 23.81 302.00 08Nov2017 5 p.m. 56.48 0.56 24.48 118.00 08Nov2017 6 p.m. 50.67 0.21 47.44 5.00 08Nov2017 7 p.m. 50.22 0.56 53.11 0.00 08Nov2017 8 p.m. 44.49 0.60 67.02 0.00 08Nov2017 9 p.m. 43.52 0.58 71.98 0.00 08Nov2017 10 p.m. 42.75 0.30 74.79 0.00 08Nov2017 11 p.m. 40.87 0.36 75.64 0.00 09Nov2017 12 a.m. 39.67 0.28 76.37 0.00 09Nov2017 1 a.m. 39.11 0.16 77.59 0.00 09Nov2017 2 a.m. 38.34 0.10 79.05 0.00 09Nov2017 3 a.m. 37.47 0.08 79.85 0.00 09Nov2017 4 a.m. 36.81 0.22 80.82 0.00 09Nov2017 5 a.m. 36.70 0.00 80.89 0.00 09Nov2017 6 a.m. 36.14 0.26 81.37 0.00 09Nov2017 7 a.m. 35.71 0.20 81.92 1.00 Accuml. Values 1079.78 16.67 1444.85 2432.00 Num. Valid Values 24 23 24 24 Avg. Values 44.99 0.72 60.20 101.33 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 7.22 27.99 60.20 209.10 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3980 definition: xcompl = 1 - (RELH_avg/100) TdC = 0.0532 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 = 0.5141 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4859 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.0982 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 = 4.0485 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.7155 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.055 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.