Detailed Weather Data for Project: WAUR

Date Time TAIR WSPD RELH SRAD 06Dec2017 8 a.m. 41.41 0.00 43.95 4.00 06Dec2017 9 a.m. 43.18 0.00 47.25 47.00 06Dec2017 10 a.m. 46.90 0.00 50.36 146.00 06Dec2017 11 a.m. 48.67 0.00 43.71 178.00 06Dec2017 12 p.m. 49.23 0.00 45.84 330.00 06Dec2017 1 p.m. 57.90 0.00 43.83 420.00 06Dec2017 2 p.m. 53.94 0.00 33.15 433.00 06Dec2017 3 p.m. 54.73 0.00 30.22 286.00 06Dec2017 4 p.m. 83.73 0.00 49.82 198.00 06Dec2017 5 p.m. 55.60 0.00 41.57 60.00 06Dec2017 6 p.m. 54.05 0.00 40.04 5.00 06Dec2017 7 p.m. 35.04 0.00 44.81 0.00 06Dec2017 8 p.m. 49.98 0.00 46.51 0.00 06Dec2017 9 p.m. 47.68 0.00 44.56 0.00 06Dec2017 10 p.m. 48.02 0.00 50.36 0.00 06Dec2017 11 p.m. 46.90 0.00 47.80 0.00 07Dec2017 12 a.m. 46.90 0.00 52.01 0.00 07Dec2017 1 a.m. 44.71 0.00 66.54 0.00 07Dec2017 2 a.m. 44.28 0.00 65.80 0.00 07Dec2017 3 a.m. 40.10 0.00 63.12 0.00 07Dec2017 4 a.m. 38.79 0.00 63.67 0.00 07Dec2017 5 a.m. 37.69 0.00 71.24 0.00 07Dec2017 6 a.m. 36.14 0.00 75.20 0.00 07Dec2017 7 a.m. 35.38 0.00 72.40 0.00 Accuml. Values 1140.96 0.00 1233.76 2107.00 Num. Valid Values 24 0 24 24 Avg. Values 47.54 51.41 87.79 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 8.63 0.00 51.41 181.16 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4859 definition: xcompl = 1 - (RELH_avg/100) TdC = -0.8420 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 = 0.5352 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4648 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.8376 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 = 5.4700 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.8736 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.052 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.