Detailed Weather Data for Project: KEYS

Date Time TAIR WSPD RELH SRAD 24Oct2018 8 a.m. 51.57 4.30 100.09 0.00 24Oct2018 9 a.m. 51.91 3.80 100.09 22.30 24Oct2018 10 a.m. 53.47 4.00 98.97 56.00 24Oct2018 11 a.m. 55.71 6.10 92.97 74.50 24Oct2018 12 p.m. 58.33 5.90 83.03 152.40 24Oct2018 1 p.m. 60.26 7.00 72.47 124.60 24Oct2018 2 p.m. 60.46 7.50 69.79 76.70 24Oct2018 3 p.m. 60.91 4.40 65.01 47.50 24Oct2018 4 p.m. 60.53 6.20 57.37 45.50 24Oct2018 5 p.m. 58.35 3.90 68.37 12.60 24Oct2018 6 p.m. 56.55 5.80 76.65 0.50 24Oct2018 7 p.m. 55.65 4.90 86.02 0.00 24Oct2018 8 p.m. 54.34 4.40 92.84 0.00 24Oct2018 9 p.m. 55.35 4.90 84.66 0.00 24Oct2018 10 p.m. 55.04 3.10 83.05 0.00 24Oct2018 11 p.m. 55.35 1.90 85.29 0.00 25Oct2018 12 a.m. 53.78 4.80 90.35 0.00 25Oct2018 1 a.m. 51.03 7.40 96.97 0.00 25Oct2018 2 a.m. 49.26 4.80 100.09 0.00 25Oct2018 3 a.m. 49.23 5.80 100.10 0.00 25Oct2018 4 a.m. 49.26 7.90 100.09 0.00 25Oct2018 5 a.m. 48.38 9.20 100.10 0.00 25Oct2018 6 a.m. 48.29 7.50 100.10 0.00 25Oct2018 7 a.m. 48.52 7.60 100.10 0.00 Accuml. Values 1301.52 133.10 2104.57 612.60 Num. Valid Values 24 24 24 24 Avg. Values 54.23 5.55 87.69 25.52 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 12.35 214.16 87.69 52.67 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1231 definition: xcompl = 1 - (RELH_avg/100) TdC = 10.3534 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 = 0.5886 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4114 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.4714 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 = 1.7799 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.7291 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.017 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.