Detailed Weather Data for Project: ELDR

Date Time TAIR WSPD RELH SRAD 07Nov2017 8 a.m. 40.69 7.70 76.61 2.50 07Nov2017 9 a.m. 39.58 8.40 76.85 29.30 07Nov2017 10 a.m. 39.38 8.90 76.97 104.90 07Nov2017 11 a.m. 41.54 11.20 73.23 154.00 07Nov2017 12 p.m. 44.06 13.90 67.43 291.50 07Nov2017 1 p.m. 45.45 11.10 61.23 297.20 07Nov2017 2 p.m. 44.73 9.50 64.20 190.70 07Nov2017 3 p.m. 45.07 10.20 65.76 70.70 07Nov2017 4 p.m. 45.54 11.60 65.31 34.20 07Nov2017 5 p.m. 45.50 15.50 60.19 7.40 07Nov2017 6 p.m. 45.27 14.00 52.29 0.00 07Nov2017 7 p.m. 49.62 4.10 37.66 0.00 07Nov2017 8 p.m. 44.55 15.30 53.04 0.00 07Nov2017 9 p.m. 43.74 11.10 53.34 0.00 07Nov2017 10 p.m. 41.54 6.60 57.92 0.00 07Nov2017 11 p.m. 39.76 5.20 62.11 0.00 08Nov2017 12 a.m. 38.68 7.00 67.37 0.00 08Nov2017 1 a.m. 39.67 9.10 66.16 0.00 08Nov2017 2 a.m. 37.69 7.00 68.77 0.00 08Nov2017 3 a.m. 37.18 6.30 70.39 0.00 08Nov2017 4 a.m. 35.33 5.10 73.12 0.00 08Nov2017 5 a.m. 32.02 4.80 79.59 0.00 08Nov2017 6 a.m. 31.96 4.60 82.74 0.00 08Nov2017 7 a.m. 33.76 4.60 87.01 0.00 Accuml. Values 982.29 212.80 1599.29 1182.40 Num. Valid Values 24 24 24 24 Avg. Values 40.93 8.87 66.64 49.27 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.96 342.40 66.64 101.66 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3336 definition: xcompl = 1 - (RELH_avg/100) TdC = -0.6873 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 = 0.4800 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5200 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.0690 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 = 2.8996 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.6056 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.073 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.