Detailed Weather Data for Project: PINE

Date Time TAIR WSPD RELH SRAD 03Mar2018 8 a.m. 44.44 3.00 86.40 70.10 03Mar2018 9 a.m. 48.74 7.20 73.55 286.50 03Mar2018 10 a.m. 53.11 10.90 61.56 501.60 03Mar2018 11 a.m. 56.73 10.10 54.11 680.80 03Mar2018 12 p.m. 59.70 9.50 48.60 806.40 03Mar2018 1 p.m. 61.99 9.60 45.22 863.70 03Mar2018 2 p.m. 64.38 8.90 43.15 842.70 03Mar2018 3 p.m. 65.97 9.90 40.34 747.80 03Mar2018 4 p.m. 66.76 9.80 41.07 572.40 03Mar2018 5 p.m. 66.76 9.90 39.94 397.90 03Mar2018 6 p.m. 65.28 7.90 38.91 157.70 03Mar2018 7 p.m. 60.93 4.70 44.70 1.30 03Mar2018 8 p.m. 57.67 3.70 51.56 0.00 03Mar2018 9 p.m. 55.02 1.90 57.55 0.00 03Mar2018 10 p.m. 53.04 3.00 63.18 0.00 03Mar2018 11 p.m. 55.54 6.90 55.45 0.00 04Mar2018 12 a.m. 57.61 9.50 47.75 0.00 04Mar2018 1 a.m. 56.71 9.30 49.51 0.00 04Mar2018 2 a.m. 55.56 9.00 52.68 0.00 04Mar2018 3 a.m. 54.48 7.10 56.87 0.00 04Mar2018 4 a.m. 53.65 6.20 60.06 0.00 04Mar2018 5 a.m. 53.08 6.70 62.39 0.00 04Mar2018 6 a.m. 53.10 7.10 61.66 0.00 04Mar2018 7 a.m. 52.81 6.70 63.16 0.00 Accuml. Values 1373.07 178.50 1299.37 5928.90 Num. Valid Values 24 24 24 24 Avg. Values 57.21 7.44 54.14 247.04 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 14.01 287.21 54.14 509.77 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4586 definition: xcompl = 1 - (RELH_avg/100) TdC = 4.9098 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 = 0.6113 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3887 definition: del_lambda2 = 1 - del_lambda1 Qn = 5.3449 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 = 7.3306 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 7.2317 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.239 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.