Detailed Weather Data for Project: PINE

Date Time TAIR WSPD RELH SRAD 02Dec2017 8 a.m. 49.17 3.20 69.42 13.70 02Dec2017 9 a.m. 53.46 5.60 64.08 155.60 02Dec2017 10 a.m. 58.73 5.10 59.80 314.50 02Dec2017 11 a.m. 61.29 7.00 60.48 393.20 02Dec2017 12 p.m. 64.49 6.70 57.54 470.60 02Dec2017 1 p.m. 67.60 6.40 55.80 519.50 02Dec2017 2 p.m. 70.90 7.10 54.57 487.30 02Dec2017 3 p.m. 73.27 8.70 54.01 385.80 02Dec2017 4 p.m. 74.50 8.50 52.97 285.80 02Dec2017 5 p.m. 73.74 8.00 55.44 78.10 02Dec2017 6 p.m. 69.87 2.40 63.34 0.00 02Dec2017 7 p.m. 69.42 8.20 58.38 0.00 02Dec2017 8 p.m. 63.34 3.30 75.21 0.00 02Dec2017 9 p.m. 61.20 3.50 79.12 0.00 02Dec2017 10 p.m. 58.80 4.60 83.97 0.00 02Dec2017 11 p.m. 57.20 3.80 87.64 0.00 03Dec2017 12 a.m. 57.96 2.90 86.54 0.00 03Dec2017 1 a.m. 57.58 2.70 87.32 0.00 03Dec2017 2 a.m. 55.96 3.40 90.37 0.00 03Dec2017 3 a.m. 56.55 2.00 89.81 0.00 03Dec2017 4 a.m. 55.62 1.20 92.02 0.00 03Dec2017 5 a.m. 53.74 3.00 95.03 0.00 03Dec2017 6 a.m. 52.11 3.10 97.67 0.00 03Dec2017 7 a.m. 51.89 2.80 98.06 0.00 Accuml. Values 1468.38 113.20 1768.59 3104.10 Num. Valid Values 24 24 24 24 Avg. Values 61.18 4.72 73.69 129.34 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 16.21 182.14 73.69 266.89 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2631 definition: xcompl = 1 - (RELH_avg/100) TdC = 11.5733 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 = 0.6404 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3596 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.1792 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 = 4.7945 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.7666 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.108 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.