Detailed Weather Data for Project: TORO

Date Time TAIR WSPD RELH SRAD 05Dec2017 8 a.m. 31.37 3.60 44.76 0.00 05Dec2017 9 a.m. 32.09 3.10 41.61 32.50 05Dec2017 10 a.m. 33.12 4.10 37.28 192.30 05Dec2017 11 a.m. 37.51 6.70 29.01 514.00 05Dec2017 12 p.m. 39.60 5.50 25.04 503.50 05Dec2017 1 p.m. 42.24 4.40 23.55 472.50 05Dec2017 2 p.m. 45.59 5.00 19.98 402.60 05Dec2017 3 p.m. 48.27 6.60 17.08 363.00 05Dec2017 4 p.m. 48.79 6.90 17.74 184.50 05Dec2017 5 p.m. 48.18 4.10 18.84 32.70 05Dec2017 6 p.m. 43.50 1.70 27.87 0.00 05Dec2017 7 p.m. 43.09 4.30 36.91 0.00 05Dec2017 8 p.m. 36.75 4.60 37.71 0.00 05Dec2017 9 p.m. 37.47 4.00 39.18 0.00 05Dec2017 10 p.m. 37.40 3.10 38.38 0.00 05Dec2017 11 p.m. 36.86 4.20 42.10 0.00 06Dec2017 12 a.m. 35.60 1.00 45.08 0.00 06Dec2017 1 a.m. 31.60 1.00 60.70 0.00 06Dec2017 2 a.m. 32.95 2.90 53.75 0.00 06Dec2017 3 a.m. 35.13 4.10 46.66 0.00 06Dec2017 4 a.m. 36.23 4.20 43.75 0.00 06Dec2017 5 a.m. 35.40 2.30 45.60 0.00 06Dec2017 6 a.m. 33.73 2.20 50.22 0.00 06Dec2017 7 a.m. 32.32 2.10 54.86 0.00 Accuml. Values 914.81 91.70 897.66 2697.60 Num. Valid Values 24 24 24 24 Avg. Values 38.12 3.82 37.40 112.40 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 3.40 147.55 37.40 231.94 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.6260 definition: xcompl = 1 - (RELH_avg/100) TdC = -9.9183 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 = 0.4560 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5440 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.2147 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 = 4.9427 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.4596 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.096 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.