Detailed Weather Data for Project: GSAL

Date Time TAIR WSPD RELH SRAD 08Nov2017 8 a.m. 34.32 4.50 60.77 2.50 08Nov2017 9 a.m. 35.98 7.30 59.19 243.00 08Nov2017 10 a.m. 40.26 7.50 52.60 448.20 08Nov2017 11 a.m. 43.95 7.10 47.67 595.10 08Nov2017 12 p.m. 46.49 8.40 41.79 679.90 08Nov2017 1 p.m. 48.78 6.10 38.20 691.90 08Nov2017 2 p.m. 50.94 5.20 34.47 625.30 08Nov2017 3 p.m. 52.70 4.00 32.61 487.60 08Nov2017 4 p.m. 53.64 2.90 33.33 310.00 08Nov2017 5 p.m. 53.13 3.30 35.64 121.20 08Nov2017 6 p.m. 49.23 1.90 42.82 3.50 08Nov2017 7 p.m. 50.14 1.70 49.36 0.00 08Nov2017 8 p.m. 41.00 0.30 61.34 0.00 08Nov2017 9 p.m. 40.23 1.30 64.28 0.00 08Nov2017 10 p.m. 35.69 0.70 76.16 0.00 08Nov2017 11 p.m. 34.47 0.20 77.00 0.00 09Nov2017 12 a.m. 34.39 0.30 79.06 0.00 09Nov2017 1 a.m. 34.52 0.40 79.43 0.00 09Nov2017 2 a.m. 36.55 1.20 77.89 0.00 09Nov2017 3 a.m. 31.46 0.40 88.08 0.00 09Nov2017 4 a.m. 32.86 0.10 87.15 0.00 09Nov2017 5 a.m. 30.24 0.60 91.47 0.00 09Nov2017 6 a.m. 31.23 0.30 89.05 0.00 09Nov2017 7 a.m. 29.52 0.70 91.54 0.00 Accuml. Values 971.71 66.40 1490.90 4208.20 Num. Valid Values 24 24 24 24 Avg. Values 40.49 2.77 62.12 175.34 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.72 106.84 62.12 361.82 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3788 definition: xcompl = 1 - (RELH_avg/100) TdC = -1.8829 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 = 0.4762 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5238 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.7209 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 = 3.2429 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.0552 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.093 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.