Detailed Weather Data for Project: HUGO

Date Time TAIR WSPD RELH SRAD 03Mar2018 8 a.m. 45.37 7.00 91.92 76.60 03Mar2018 9 a.m. 49.42 9.60 76.89 275.40 03Mar2018 10 a.m. 52.97 13.20 63.84 469.40 03Mar2018 11 a.m. 56.23 11.70 57.64 627.70 03Mar2018 12 p.m. 59.41 13.00 52.48 735.10 03Mar2018 1 p.m. 62.33 10.40 48.69 778.10 03Mar2018 2 p.m. 64.33 12.10 44.57 751.30 03Mar2018 3 p.m. 65.93 12.40 42.60 659.70 03Mar2018 4 p.m. 66.78 12.10 41.81 482.30 03Mar2018 5 p.m. 67.01 11.90 38.77 335.00 03Mar2018 6 p.m. 65.86 10.50 37.93 121.70 03Mar2018 7 p.m. 55.62 12.40 91.00 0.00 03Mar2018 8 p.m. 60.53 7.00 43.76 0.00 03Mar2018 9 p.m. 58.80 6.30 47.16 0.00 03Mar2018 10 p.m. 58.68 8.30 49.28 0.00 03Mar2018 11 p.m. 59.99 10.30 47.79 0.00 04Mar2018 12 a.m. 59.38 12.50 48.02 0.00 04Mar2018 1 a.m. 58.42 11.00 49.98 0.00 04Mar2018 2 a.m. 58.03 10.50 51.86 0.00 04Mar2018 3 a.m. 57.63 8.60 53.68 0.00 04Mar2018 4 a.m. 56.68 7.60 57.01 0.00 04Mar2018 5 a.m. 55.81 9.20 58.77 0.00 04Mar2018 6 a.m. 55.38 9.50 60.96 0.00 04Mar2018 7 a.m. 54.84 7.70 63.34 0.00 Accuml. Values 1405.43 244.80 1319.75 5312.30 Num. Valid Values 24 24 24 24 Avg. Values 58.56 10.20 54.99 221.35 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 14.76 393.88 54.99 456.75 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4501 definition: xcompl = 1 - (RELH_avg/100) TdC = 5.8402 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 = 0.6213 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3787 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.6538 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 = 7.5435 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 9.2474 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.252 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.