Detailed Weather Data for Project: EUFA

Date Time TAIR WSPD RELH SRAD 03Dec2017 8 a.m. 54.07 5.94 80.16 8.00 03Dec2017 9 a.m. 57.69 6.73 76.01 89.00 03Dec2017 10 a.m. 64.06 5.61 66.54 223.00 03Dec2017 11 a.m. 68.23 5.82 59.22 315.00 03Dec2017 12 p.m. 70.11 9.13 57.51 462.00 03Dec2017 1 p.m. 72.84 8.92 53.23 247.00 03Dec2017 2 p.m. 71.98 11.25 56.59 364.00 03Dec2017 3 p.m. 72.18 8.88 57.14 158.00 03Dec2017 4 p.m. 72.41 7.65 56.84 127.00 03Dec2017 5 p.m. 70.54 9.61 57.99 89.00 03Dec2017 6 p.m. 68.23 8.29 60.13 2.00 03Dec2017 7 p.m. 63.72 0.91 53.47 -1.00 03Dec2017 8 p.m. 65.48 7.42 62.02 0.00 03Dec2017 9 p.m. 65.93 7.75 61.05 0.00 03Dec2017 10 p.m. 67.14 6.94 58.85 0.00 03Dec2017 11 p.m. 68.02 8.00 56.41 0.00 04Dec2017 12 a.m. 66.81 8.53 57.45 0.00 04Dec2017 1 a.m. 65.82 7.94 61.11 0.00 04Dec2017 2 a.m. 65.05 8.14 66.67 0.00 04Dec2017 3 a.m. 64.51 6.13 70.57 0.00 04Dec2017 4 a.m. 64.49 4.86 73.37 0.00 04Dec2017 5 a.m. 64.51 7.84 77.41 0.00 04Dec2017 6 a.m. 64.62 7.95 79.12 0.00 04Dec2017 7 a.m. 64.71 6.88 81.25 0.00 Accuml. Values 1593.12 177.12 1540.11 2083.00 Num. Valid Values 24 24 24 24 Avg. Values 66.38 7.38 64.17 86.79 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 19.10 284.99 64.17 179.10 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3583 definition: xcompl = 1 - (RELH_avg/100) TdC = 12.2666 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 = 0.6761 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3239 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.1767 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 = 7.8336 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 7.6272 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.129 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.