Detailed Weather Data for Project: WAUR

Date Time TAIR WSPD RELH SRAD 02Dec2017 8 a.m. 56.35 0.00 86.44 17.00 02Dec2017 9 a.m. 59.00 0.00 83.51 131.00 02Dec2017 10 a.m. 61.63 0.00 78.87 210.00 02Dec2017 11 a.m. 66.04 0.00 65.51 391.00 02Dec2017 12 p.m. 73.98 0.00 51.84 533.00 02Dec2017 1 p.m. 77.92 0.00 36.52 563.00 02Dec2017 2 p.m. 77.61 0.00 40.79 458.00 02Dec2017 3 p.m. 79.14 0.00 35.11 413.00 02Dec2017 4 p.m. 77.72 0.00 32.91 263.00 02Dec2017 5 p.m. 74.52 0.00 35.96 108.00 02Dec2017 6 p.m. 67.60 0.00 57.27 5.00 02Dec2017 7 p.m. 71.98 0.00 72.28 0.00 02Dec2017 8 p.m. 62.29 0.00 67.57 0.00 02Dec2017 9 p.m. 58.57 0.00 70.50 0.00 02Dec2017 10 p.m. 58.33 0.00 73.80 0.00 02Dec2017 11 p.m. 56.48 0.00 73.86 0.00 03Dec2017 12 a.m. 56.48 0.00 75.08 0.00 03Dec2017 1 a.m. 54.16 0.00 80.33 0.00 03Dec2017 2 a.m. 54.82 0.00 79.90 0.00 03Dec2017 3 a.m. 54.05 0.00 80.94 0.00 03Dec2017 4 a.m. 53.62 0.00 83.51 0.00 03Dec2017 5 a.m. 53.94 0.00 81.68 0.00 03Dec2017 6 a.m. 52.41 0.00 83.75 0.00 03Dec2017 7 a.m. 52.41 0.00 84.54 0.00 Accuml. Values 1511.06 0.00 1612.47 3092.00 Num. Valid Values 24 0 24 24 Avg. Values 62.96 67.19 128.83 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 17.20 0.00 67.19 265.85 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3281 definition: xcompl = 1 - (RELH_avg/100) TdC = 11.1469 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 = 0.6529 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3471 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.2188 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 = 6.3675 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.1416 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.086 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.