Detailed Weather Data for Project: TENK

Date Time TAIR WSPD RELH SRAD 04Dec2017 8 a.m. 61.16 11.69 88.50 7.75 04Dec2017 9 a.m. 62.12 12.45 89.00 60.67 04Dec2017 10 a.m. 63.77 10.79 87.00 111.00 04Dec2017 11 a.m. 64.82 11.71 85.33 78.33 04Dec2017 12 p.m. 65.70 10.23 84.50 86.75 04Dec2017 1 p.m. 67.28 10.22 80.67 124.33 04Dec2017 2 p.m. 70.38 13.92 73.50 293.00 04Dec2017 3 p.m. 70.92 11.69 72.25 140.75 04Dec2017 4 p.m. 70.29 9.84 74.00 80.25 04Dec2017 5 p.m. 68.94 8.39 78.50 10.25 04Dec2017 6 p.m. 61.70 5.14 90.00 0.00 04Dec2017 7 p.m. 61.70 7.61 60.00 0.00 04Dec2017 8 p.m. 60.35 7.38 54.50 0.00 04Dec2017 9 p.m. 59.90 9.69 44.33 0.00 04Dec2017 10 p.m. 56.66 10.96 41.00 0.00 04Dec2017 11 p.m. 50.00 7.16 47.00 0.00 05Dec2017 12 a.m. 47.88 8.39 45.75 0.00 05Dec2017 1 a.m. 45.18 7.44 46.00 0.00 05Dec2017 2 a.m. 43.07 6.26 49.75 0.00 05Dec2017 3 a.m. 41.30 7.90 54.33 0.00 05Dec2017 4 a.m. 39.78 6.88 56.00 0.00 05Dec2017 5 a.m. 38.66 6.38 58.00 0.00 05Dec2017 6 a.m. 37.31 7.10 61.00 0.00 05Dec2017 7 a.m. 35.60 7.38 61.00 0.00 Accuml. Values 1344.47 216.60 1581.91 993.08 Num. Valid Values 24 24 24 24 Avg. Values 56.02 9.03 65.91 41.38 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 13.34 348.51 65.91 85.39 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3409 definition: xcompl = 1 - (RELH_avg/100) TdC = 7.1751 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 = 0.6023 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3977 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.1037 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 = 5.1821 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 6.0857 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.093 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.