Detailed Weather Data for Project: HUGO

Date Time TAIR WSPD RELH SRAD 30Dec2017 8 a.m. 42.19 0.42 94.01 3.00 30Dec2017 9 a.m. 42.62 0.78 92.30 33.00 30Dec2017 10 a.m. 44.17 5.43 85.52 78.00 30Dec2017 11 a.m. 45.37 7.03 72.46 124.00 30Dec2017 12 p.m. 45.27 9.64 77.22 145.00 30Dec2017 1 p.m. 42.85 16.53 76.55 118.00 30Dec2017 2 p.m. 41.20 16.61 78.87 103.00 30Dec2017 3 p.m. 39.88 14.82 78.14 102.00 30Dec2017 4 p.m. 38.25 16.59 80.89 64.00 30Dec2017 5 p.m. 36.36 15.23 82.35 15.00 30Dec2017 6 p.m. 35.92 12.89 85.70 0.00 30Dec2017 7 p.m. 26.80 16.56 41.51 6343.00 30Dec2017 8 p.m. 34.50 11.56 85.09 0.00 30Dec2017 9 p.m. 34.39 7.45 84.30 0.00 30Dec2017 10 p.m. 34.50 10.18 84.73 0.00 30Dec2017 11 p.m. 34.27 7.57 83.69 0.00 31Dec2017 12 a.m. 34.61 6.90 83.75 0.00 31Dec2017 1 a.m. 34.39 5.83 85.53 0.00 31Dec2017 2 a.m. 35.38 5.24 88.88 0.00 31Dec2017 3 a.m. 34.72 4.52 88.45 0.00 31Dec2017 4 a.m. 35.82 14.56 88.69 0.00 31Dec2017 5 a.m. 34.61 9.46 83.26 0.00 31Dec2017 6 a.m. 34.61 13.46 86.01 0.00 31Dec2017 7 a.m. 33.30 14.50 82.71 0.00 Accuml. Values 895.98 243.76 1970.61 7128.00 Num. Valid Values 24 24 24 24 Avg. Values 37.33 10.16 82.11 297.00 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 2.96 392.21 82.11 612.87 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1789 definition: xcompl = 1 - (RELH_avg/100) TdC = 0.2072 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 = 0.4493 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5507 definition: del_lambda2 = 1 - del_lambda1 Qn = 5.7565 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 = 1.3617 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.0436 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.146 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.