Detailed Weather Data for Project: PINE

Date Time TAIR WSPD RELH SRAD 04Nov2017 8 a.m. 60.64 2.30 98.33 0.00 04Nov2017 9 a.m. 61.29 2.40 99.67 0.00 04Nov2017 10 a.m. 63.05 4.80 100.09 29.40 04Nov2017 11 a.m. 65.01 4.90 100.08 81.30 04Nov2017 12 p.m. 67.53 3.30 99.64 106.80 04Nov2017 1 p.m. 71.55 2.20 94.00 147.50 04Nov2017 2 p.m. 76.73 10.00 81.97 387.50 04Nov2017 3 p.m. 79.65 8.70 73.67 332.40 04Nov2017 4 p.m. 82.11 11.00 64.31 333.00 04Nov2017 5 p.m. 82.67 12.50 60.39 288.50 04Nov2017 6 p.m. 81.25 11.00 62.35 116.70 04Nov2017 7 p.m. 78.01 9.20 71.44 0.00 04Nov2017 8 p.m. 78.39 6.20 71.69 0.00 04Nov2017 9 p.m. 72.46 5.30 84.72 0.00 04Nov2017 10 p.m. 71.19 3.40 87.90 0.00 04Nov2017 11 p.m. 68.95 3.60 93.37 0.00 05Nov2017 12 a.m. 68.45 4.40 94.00 0.00 05Nov2017 1 a.m. 67.89 5.40 95.66 0.00 05Nov2017 2 a.m. 68.25 4.70 95.49 0.00 05Nov2017 3 a.m. 69.12 4.60 94.39 0.00 05Nov2017 4 a.m. 70.41 7.40 92.68 0.00 05Nov2017 5 a.m. 71.35 8.80 92.24 0.00 05Nov2017 6 a.m. 71.64 9.20 91.57 0.00 05Nov2017 7 a.m. 71.33 9.10 90.48 0.00 Accuml. Values 1718.90 154.40 2090.13 1823.10 Num. Valid Values 24 24 24 24 Avg. Values 71.62 6.43 87.09 75.96 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 22.01 248.43 87.09 156.75 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1291 definition: xcompl = 1 - (RELH_avg/100) TdC = 19.7688 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 = 0.7095 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.2905 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.9926 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 = 3.4048 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.3520 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.066 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.