Detailed Weather Data for Project: NEWT

Date Time TAIR WSPD RELH SRAD 02Dec2017 8 a.m. 42.12 1.30 82.06 10.80 02Dec2017 9 a.m. 46.20 0.70 75.81 167.20 02Dec2017 10 a.m. 54.27 1.80 56.01 325.70 02Dec2017 11 a.m. 59.54 5.20 50.85 449.00 02Dec2017 12 p.m. 63.30 5.20 49.53 519.50 02Dec2017 1 p.m. 65.79 2.80 48.75 533.20 02Dec2017 2 p.m. 66.88 2.00 48.78 486.20 02Dec2017 3 p.m. 68.52 1.80 46.89 376.10 02Dec2017 4 p.m. 69.31 1.70 47.03 236.40 02Dec2017 5 p.m. 68.02 0.90 50.18 54.50 02Dec2017 6 p.m. 62.17 0.30 62.34 0.00 02Dec2017 7 p.m. 67.59 8.00 67.06 0.00 02Dec2017 8 p.m. 54.64 0.30 82.29 0.00 02Dec2017 9 p.m. 52.12 0.80 86.40 0.00 02Dec2017 10 p.m. 50.20 0.70 87.67 0.00 02Dec2017 11 p.m. 48.42 0.90 89.69 0.00 03Dec2017 12 a.m. 48.38 0.00 90.85 0.00 03Dec2017 1 a.m. 48.04 0.10 92.52 0.00 03Dec2017 2 a.m. 46.78 0.30 93.32 0.00 03Dec2017 3 a.m. 46.74 0.10 93.47 0.00 03Dec2017 4 a.m. 47.10 0.10 94.76 0.00 03Dec2017 5 a.m. 46.96 0.10 94.06 0.00 03Dec2017 6 a.m. 45.81 1.20 92.75 0.00 03Dec2017 7 a.m. 47.12 0.40 93.70 0.00 Accuml. Values 1316.01 36.70 1776.77 3158.60 Num. Valid Values 24 23 24 24 Avg. Values 54.83 1.60 74.03 131.61 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 12.69 61.62 74.03 271.58 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2597 definition: xcompl = 1 - (RELH_avg/100) TdC = 8.2277 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 = 0.5933 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4067 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.0557 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 = 3.7795 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.9290 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.079 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.