Detailed Weather Data for Project: SARD

Date Time TAIR WSPD RELH SRAD 06Nov2017 8 a.m. 56.41 2.10 80.69 0.10 06Nov2017 9 a.m. 56.26 1.80 88.25 24.40 06Nov2017 10 a.m. 56.17 3.60 95.11 44.90 06Nov2017 11 a.m. 56.98 7.10 97.18 90.60 06Nov2017 12 p.m. 57.63 7.90 97.53 87.50 06Nov2017 1 p.m. 57.72 11.50 96.62 50.10 06Nov2017 2 p.m. 57.45 9.80 96.40 69.60 06Nov2017 3 p.m. 57.38 9.20 91.48 37.10 06Nov2017 4 p.m. 57.02 6.30 89.65 29.40 06Nov2017 5 p.m. 56.28 8.20 88.17 1.50 06Nov2017 6 p.m. 55.51 9.40 87.79 0.00 06Nov2017 7 p.m. 46.69 14.40 90.05 0.00 06Nov2017 8 p.m. 53.74 16.30 89.91 0.00 06Nov2017 9 p.m. 52.81 17.40 89.43 0.00 06Nov2017 10 p.m. 51.75 21.60 90.02 0.00 06Nov2017 11 p.m. 50.59 19.80 89.52 0.00 07Nov2017 12 a.m. 49.82 15.50 90.32 0.00 07Nov2017 1 a.m. 49.28 14.00 87.59 0.00 07Nov2017 2 a.m. 49.15 12.50 87.98 0.00 07Nov2017 3 a.m. 48.76 14.70 87.67 0.00 07Nov2017 4 a.m. 48.47 13.50 89.75 0.00 07Nov2017 5 a.m. 47.97 15.40 91.54 0.00 07Nov2017 6 a.m. 47.79 15.20 91.41 0.00 07Nov2017 7 a.m. 47.28 17.50 93.18 0.00 Accuml. Values 1268.92 284.70 2177.24 435.20 Num. Valid Values 24 24 24 24 Avg. Values 52.87 11.86 90.72 18.13 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 11.60 458.08 90.72 37.42 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0928 definition: xcompl = 1 - (RELH_avg/100) TdC = 10.1085 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 = 0.5780 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4220 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.6378 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 = 1.2873 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.1836 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.022 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.