Detailed Weather Data for Project: WAUR

Date Time TAIR WSPD RELH SRAD 07Nov2017 8 a.m. 49.55 0.00 86.86 12.00 07Nov2017 9 a.m. 50.97 0.00 81.74 72.00 07Nov2017 10 a.m. 51.64 0.00 73.74 214.00 07Nov2017 11 a.m. 52.30 0.00 74.72 351.00 07Nov2017 12 p.m. 52.30 0.00 74.11 405.00 07Nov2017 1 p.m. 51.96 0.00 74.41 352.00 07Nov2017 2 p.m. 51.75 0.00 76.06 206.00 07Nov2017 3 p.m. 52.30 0.00 74.53 232.00 07Nov2017 4 p.m. 51.53 0.00 70.93 122.00 07Nov2017 5 p.m. 51.21 0.00 70.93 57.00 07Nov2017 6 p.m. 51.21 0.00 70.99 7.00 07Nov2017 7 p.m. 46.36 0.00 77.16 0.00 07Nov2017 8 p.m. 49.98 0.00 74.59 0.00 07Nov2017 9 p.m. 49.77 0.00 76.73 0.00 07Nov2017 10 p.m. 49.87 0.00 77.40 0.00 07Nov2017 11 p.m. 49.77 0.00 74.11 0.00 08Nov2017 12 a.m. 49.66 0.00 68.43 0.00 08Nov2017 1 a.m. 48.56 0.00 67.76 0.00 08Nov2017 2 a.m. 47.35 0.00 70.87 0.00 08Nov2017 3 a.m. 47.03 0.00 73.68 0.00 08Nov2017 4 a.m. 46.58 0.00 79.17 0.00 08Nov2017 5 a.m. 46.36 0.00 80.33 0.00 08Nov2017 6 a.m. 46.69 0.00 85.64 0.00 08Nov2017 7 a.m. 46.15 0.00 87.54 0.00 Accuml. Values 1190.86 0.00 1822.43 2030.00 Num. Valid Values 24 0 24 24 Avg. Values 49.62 75.93 84.58 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 9.79 0.00 75.93 174.54 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2407 definition: xcompl = 1 - (RELH_avg/100) TdC = 5.7821 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 = 0.5521 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4479 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.7997 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 = 2.8997 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.0718 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.036 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.