Detailed Weather Data for Project: MCGE

Date Time TAIR WSPD RELH SRAD 02Dec2017 8 a.m. 50.13 6.99 74.75 42.00 02Dec2017 9 a.m. 53.42 8.87 68.33 169.67 02Dec2017 10 a.m. 58.01 8.33 63.75 287.75 02Dec2017 11 a.m. 62.96 8.65 59.67 440.67 02Dec2017 12 p.m. 67.23 6.93 56.25 463.25 02Dec2017 1 p.m. 70.34 6.93 54.00 470.67 02Dec2017 2 p.m. 73.53 6.32 50.50 442.50 02Dec2017 3 p.m. 75.11 6.15 50.25 304.25 02Dec2017 4 p.m. 75.15 7.05 51.50 194.25 02Dec2017 5 p.m. 73.40 7.66 53.25 63.25 02Dec2017 6 p.m. 64.40 1.79 67.00 0.00 02Dec2017 7 p.m. 57.92 2.68 84.00 0.00 02Dec2017 8 p.m. 57.92 4.25 84.00 0.00 02Dec2017 9 p.m. 56.93 3.47 86.50 0.00 02Dec2017 10 p.m. 56.66 4.92 87.33 0.00 02Dec2017 11 p.m. 56.57 4.31 89.75 0.00 03Dec2017 12 a.m. 56.48 4.64 89.00 0.00 03Dec2017 1 a.m. 55.94 4.42 90.00 0.00 03Dec2017 2 a.m. 55.98 5.87 91.00 0.00 03Dec2017 3 a.m. 55.52 5.37 91.67 0.00 03Dec2017 4 a.m. 54.63 4.75 93.75 0.00 03Dec2017 5 a.m. 54.41 5.93 94.00 0.00 03Dec2017 6 a.m. 53.46 5.48 95.00 0.00 03Dec2017 7 a.m. 53.87 6.38 94.50 0.00 Accuml. Values 1449.97 138.14 1819.75 2878.26 Num. Valid Values 24 24 24 24 Avg. Values 60.42 5.76 75.82 119.93 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 15.79 222.27 75.82 247.47 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2418 definition: xcompl = 1 - (RELH_avg/100) TdC = 11.5821 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 = 0.6349 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3651 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.9074 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 = 4.2919 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.8362 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.103 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.