Detailed Weather Data for Project: BIRC

Date Time TAIR WSPD RELH SRAD 03Dec2017 8 a.m. 44.83 0.08 91.39 1.61 03Dec2017 9 a.m. 46.94 2.09 89.27 67.38 03Dec2017 10 a.m. 52.66 6.26 83.54 303.61 03Dec2017 11 a.m. 56.44 8.10 78.37 257.38 03Dec2017 12 p.m. 58.05 7.69 76.12 346.91 03Dec2017 1 p.m. 59.77 8.01 71.14 215.74 03Dec2017 2 p.m. 62.94 9.37 65.09 425.88 03Dec2017 3 p.m. 64.89 10.72 62.25 0.28 03Dec2017 4 p.m. 65.88 9.48 60.18 0.10 03Dec2017 5 p.m. 65.41 8.71 60.25 0.10 03Dec2017 6 p.m. 64.29 8.41 64.13 0.10 03Dec2017 7 p.m. 58.86 8.58 22.85 0.10 03Dec2017 8 p.m. 63.07 10.39 69.97 0.10 03Dec2017 9 p.m. 63.43 10.39 68.37 0.10 03Dec2017 10 p.m. 62.46 12.00 69.45 0.10 03Dec2017 11 p.m. 61.92 14.45 71.05 0.10 04Dec2017 12 a.m. 61.90 12.67 73.24 0.11 04Dec2017 1 a.m. 62.04 14.99 71.98 0.10 04Dec2017 2 a.m. 62.31 16.08 69.69 0.10 04Dec2017 3 a.m. 62.11 17.24 70.01 0.10 04Dec2017 4 a.m. 61.41 15.93 73.54 0.10 04Dec2017 5 a.m. 61.11 14.80 76.69 0.10 04Dec2017 6 a.m. 61.59 14.84 78.34 0.10 04Dec2017 7 a.m. 61.77 13.37 79.40 0.10 Accuml. Values 1446.08 254.65 1696.31 1620.40 Num. Valid Values 24 24 24 24 Avg. Values 60.25 10.61 70.68 67.52 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 15.70 409.73 70.68 139.32 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2932 definition: xcompl = 1 - (RELH_avg/100) TdC = 10.4574 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 = 0.6337 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3663 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.5688 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 = 5.1719 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 6.8291 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.113 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.