Detailed Weather Data for Project: HUDS

Date Time TAIR WSPD RELH SRAD 03Dec2017 8 a.m. 59.67 1.10 73.92 3.70 03Dec2017 9 a.m. 60.62 1.80 72.44 46.50 03Dec2017 10 a.m. 62.74 1.70 69.77 127.90 03Dec2017 11 a.m. 66.47 1.90 63.81 189.40 03Dec2017 12 p.m. 67.96 3.10 61.00 95.80 03Dec2017 1 p.m. 68.23 4.00 60.17 134.50 03Dec2017 2 p.m. 70.66 2.50 56.96 111.90 03Dec2017 3 p.m. 73.04 2.50 54.36 46.70 03Dec2017 4 p.m. 72.57 2.10 56.76 20.40 03Dec2017 5 p.m. 70.57 2.40 61.55 4.70 03Dec2017 6 p.m. 68.47 3.90 65.27 0.00 03Dec2017 7 p.m. 64.36 7.50 40.79 0.00 03Dec2017 8 p.m. 67.12 5.90 64.61 0.00 03Dec2017 9 p.m. 66.56 5.70 63.67 0.00 03Dec2017 10 p.m. 66.33 4.80 63.82 0.00 03Dec2017 11 p.m. 66.63 3.90 62.82 0.00 04Dec2017 12 a.m. 66.11 3.80 63.40 0.00 04Dec2017 1 a.m. 65.10 3.00 64.96 0.00 04Dec2017 2 a.m. 64.53 3.20 64.81 0.00 04Dec2017 3 a.m. 64.04 2.40 65.60 0.00 04Dec2017 4 a.m. 63.59 2.40 69.23 0.00 04Dec2017 5 a.m. 63.48 2.10 72.94 0.00 04Dec2017 6 a.m. 63.37 2.00 79.66 0.00 04Dec2017 7 a.m. 63.01 2.80 84.14 0.00 Accuml. Values 1585.25 76.50 1556.46 781.50 Num. Valid Values 24 24 24 24 Avg. Values 66.05 3.19 64.85 32.56 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 18.92 123.09 64.85 67.19 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3515 definition: xcompl = 1 - (RELH_avg/100) TdC = 12.2539 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 = 0.6740 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3260 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.2256 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 = 7.5960 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 4.6271 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.053 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.