Detailed Weather Data for Project: GSAL

Date Time TAIR WSPD RELH SRAD 02Dec2017 8 a.m. 37.85 0.60 96.89 1.40 02Dec2017 9 a.m. 41.11 1.50 93.82 118.20 02Dec2017 10 a.m. 47.23 4.90 80.69 328.10 02Dec2017 11 a.m. 47.07 6.80 82.15 470.80 02Dec2017 12 p.m. 49.68 7.30 80.14 559.00 02Dec2017 1 p.m. 53.33 6.30 72.73 576.30 02Dec2017 2 p.m. 60.31 5.20 57.63 526.00 02Dec2017 3 p.m. 63.79 7.00 50.63 451.30 02Dec2017 4 p.m. 65.14 5.70 49.04 331.50 02Dec2017 5 p.m. 63.77 3.20 52.14 72.40 02Dec2017 6 p.m. 59.13 1.60 63.89 0.00 02Dec2017 7 p.m. 66.27 9.70 67.48 0.00 02Dec2017 8 p.m. 50.00 0.50 84.64 0.00 02Dec2017 9 p.m. 47.91 0.90 86.59 0.00 02Dec2017 10 p.m. 47.10 0.00 88.18 0.00 02Dec2017 11 p.m. 46.92 0.40 89.92 0.00 03Dec2017 12 a.m. 46.94 1.70 92.48 0.00 03Dec2017 1 a.m. 45.39 2.30 95.26 0.00 03Dec2017 2 a.m. 43.70 0.70 96.66 0.00 03Dec2017 3 a.m. 41.70 0.10 96.44 0.00 03Dec2017 4 a.m. 41.20 0.30 97.59 0.00 03Dec2017 5 a.m. 42.76 2.70 98.07 0.00 03Dec2017 6 a.m. 41.85 0.50 96.88 0.00 03Dec2017 7 a.m. 42.08 1.20 97.83 0.00 Accuml. Values 1192.22 71.10 1967.77 3435.00 Num. Valid Values 24 23 24 24 Avg. Values 49.68 3.09 81.99 143.13 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 9.82 119.37 81.99 295.34 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1801 definition: xcompl = 1 - (RELH_avg/100) TdC = 6.8990 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 = 0.5526 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4474 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.2008 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 = 2.1857 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.5247 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.075 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.