Detailed Weather Data for Project: WAUR

Date Time TAIR WSPD RELH SRAD 05Mar2018 8 a.m. 51.53 24.79 60.49 79.00 05Mar2018 9 a.m. 52.18 25.23 53.96 290.00 05Mar2018 10 a.m. 53.74 23.91 47.31 486.00 05Mar2018 11 a.m. 54.84 25.45 45.48 613.00 05Mar2018 12 p.m. 55.92 21.06 39.80 707.00 05Mar2018 1 p.m. 57.58 15.14 35.90 760.00 05Mar2018 2 p.m. 58.03 21.72 28.69 756.00 05Mar2018 3 p.m. 58.24 11.19 28.82 635.00 05Mar2018 4 p.m. 58.46 16.02 26.86 458.00 05Mar2018 5 p.m. 58.78 10.97 29.55 325.00 05Mar2018 6 p.m. 57.13 6.58 33.39 127.00 05Mar2018 7 p.m. 55.36 16.24 37.91 14.00 05Mar2018 8 p.m. 57.15 5.27 22.10 0.00 05Mar2018 9 p.m. 51.53 4.17 68.55 0.00 05Mar2018 10 p.m. 49.98 5.49 73.98 0.00 05Mar2018 11 p.m. 48.13 2.85 63.42 0.00 06Mar2018 12 a.m. 47.03 2.63 73.86 0.00 06Mar2018 1 a.m. 42.75 3.51 69.47 0.00 06Mar2018 2 a.m. 40.77 5.27 65.07 0.00 06Mar2018 3 a.m. 40.77 1.32 60.86 0.00 06Mar2018 4 a.m. 43.29 5.05 72.40 0.00 06Mar2018 5 a.m. 44.82 12.29 50.12 0.00 06Mar2018 6 a.m. 42.96 11.41 55.79 0.00 06Mar2018 7 a.m. 42.96 11.19 58.23 1.00 Accuml. Values 1223.92 288.75 1202.01 5251.00 Num. Valid Values 24 24 24 24 Avg. Values 51.00 12.03 50.08 218.79 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 10.55 464.60 50.08 451.48 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4992 definition: xcompl = 1 - (RELH_avg/100) TdC = 0.5686 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 = 0.5632 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4368 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.2372 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 = 6.3905 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 9.0404 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.249 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.