Detailed Weather Data for Project: ELDR

Date Time TAIR WSPD RELH SRAD 06Nov2017 8 a.m. 36.79 12.10 84.33 19.00 06Nov2017 9 a.m. 37.27 8.30 78.40 74.30 06Nov2017 10 a.m. 38.34 7.20 73.94 106.80 06Nov2017 11 a.m. 39.24 7.70 72.69 113.80 06Nov2017 12 p.m. 40.55 6.60 70.03 106.10 06Nov2017 1 p.m. 41.86 5.90 69.13 118.00 06Nov2017 2 p.m. 43.88 7.50 64.51 106.10 06Nov2017 3 p.m. 46.11 7.20 62.28 77.60 06Nov2017 4 p.m. 47.62 7.50 62.53 49.40 06Nov2017 5 p.m. 48.09 6.80 59.94 6.00 06Nov2017 6 p.m. 47.46 10.90 61.97 0.00 06Nov2017 7 p.m. 44.85 15.40 50.77 0.00 06Nov2017 8 p.m. 45.12 9.20 69.69 0.00 06Nov2017 9 p.m. 44.76 8.80 70.31 0.00 06Nov2017 10 p.m. 44.58 8.60 71.78 0.00 06Nov2017 11 p.m. 44.22 9.80 76.54 0.00 07Nov2017 12 a.m. 43.70 9.40 82.22 0.00 07Nov2017 1 a.m. 43.27 10.20 88.75 0.00 07Nov2017 2 a.m. 42.89 6.90 90.53 0.00 07Nov2017 3 a.m. 43.14 5.60 89.18 0.00 07Nov2017 4 a.m. 42.31 5.50 86.95 0.00 07Nov2017 5 a.m. 41.45 7.30 81.77 0.00 07Nov2017 6 a.m. 41.34 9.80 78.95 0.00 07Nov2017 7 a.m. 41.25 8.00 77.48 0.00 Accuml. Values 1030.12 202.20 1774.67 777.10 Num. Valid Values 24 24 24 24 Avg. Values 42.92 8.43 73.94 32.38 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 6.07 325.34 73.94 66.82 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2606 definition: xcompl = 1 - (RELH_avg/100) TdC = 1.8055 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 = 0.4968 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5032 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.3928 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 = 2.4427 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.9922 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.052 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.