Detailed Weather Data for Project: KEYS

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 71.55 7.36 74.98 97.00 05Nov2017 9 a.m. 72.88 9.86 67.05 240.00 05Nov2017 10 a.m. 72.23 11.75 57.77 338.00 05Nov2017 11 a.m. 71.33 13.38 53.79 536.00 05Nov2017 12 p.m. 67.60 15.28 51.29 642.00 05Nov2017 1 p.m. 63.19 15.01 73.21 365.00 05Nov2017 2 p.m. 58.48 18.37 80.18 136.00 05Nov2017 3 p.m. 57.81 16.79 78.64 87.00 05Nov2017 4 p.m. 57.15 14.71 77.67 48.00 05Nov2017 5 p.m. 56.84 13.23 72.73 20.00 05Nov2017 6 p.m. 55.40 11.50 73.64 2.00 05Nov2017 7 p.m. 44.74 6.67 84.57 0.00 05Nov2017 8 p.m. 54.41 9.49 69.54 0.00 05Nov2017 9 p.m. 52.97 4.76 71.86 0.00 05Nov2017 10 p.m. 51.89 2.97 75.35 0.00 05Nov2017 11 p.m. 51.01 3.04 76.09 0.00 06Nov2017 12 a.m. 50.02 4.72 74.37 0.00 06Nov2017 1 a.m. 48.70 7.31 76.58 0.00 06Nov2017 2 a.m. 49.03 1.95 77.61 0.00 06Nov2017 3 a.m. 49.80 2.92 76.58 0.00 06Nov2017 4 a.m. 50.13 7.97 77.31 0.00 06Nov2017 5 a.m. 49.91 8.22 78.29 1.00 06Nov2017 6 a.m. 49.59 8.99 77.67 0.00 06Nov2017 7 a.m. 49.35 7.99 78.70 0.00 Accuml. Values 1356.01 224.24 1755.47 2512.00 Num. Valid Values 24 24 24 24 Avg. Values 56.50 9.34 73.14 104.67 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 13.61 360.80 73.14 215.98 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2686 definition: xcompl = 1 - (RELH_avg/100) TdC = 8.9485 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 = 0.6060 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3940 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.4174 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 = 4.1482 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 5.1280 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.113 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.