Detailed Weather Data for Project: GSAL

Date Time TAIR WSPD RELH SRAD 06Dec2017 8 a.m. 31.75 8.90 62.79 0.00 06Dec2017 9 a.m. 31.42 7.90 60.78 108.90 06Dec2017 10 a.m. 35.13 6.10 52.96 335.90 06Dec2017 11 a.m. 40.42 6.40 47.47 484.80 06Dec2017 12 p.m. 44.19 7.50 43.77 573.70 06Dec2017 1 p.m. 49.96 11.20 31.27 569.90 06Dec2017 2 p.m. 50.70 13.30 28.93 532.20 06Dec2017 3 p.m. 50.85 12.20 28.11 443.40 06Dec2017 4 p.m. 50.76 12.30 24.33 287.10 06Dec2017 5 p.m. 50.00 8.70 24.89 94.70 06Dec2017 6 p.m. 47.01 4.10 28.11 0.00 06Dec2017 7 p.m. 28.36 1.00 35.52 0.00 06Dec2017 8 p.m. 39.49 2.10 48.40 0.00 06Dec2017 9 p.m. 37.63 3.40 56.39 0.00 06Dec2017 10 p.m. 36.36 2.90 63.80 0.00 06Dec2017 11 p.m. 35.31 9.20 54.19 0.00 07Dec2017 12 a.m. 34.88 13.20 60.24 0.00 07Dec2017 1 a.m. 33.13 10.10 59.50 0.00 07Dec2017 2 a.m. 31.44 10.90 59.34 0.00 07Dec2017 3 a.m. 28.53 11.90 53.35 0.00 07Dec2017 4 a.m. 25.83 10.70 56.70 0.00 07Dec2017 5 a.m. 23.70 8.70 61.49 0.00 07Dec2017 6 a.m. 21.67 6.40 66.58 0.00 07Dec2017 7 a.m. 19.36 8.20 72.04 0.00 Accuml. Values 877.89 197.30 1180.95 3430.60 Num. Valid Values 24 24 24 24 Avg. Values 36.58 8.22 49.21 142.94 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 2.54 317.46 49.21 294.96 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5079 definition: xcompl = 1 - (RELH_avg/100) TdC = -7.0870 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 = 0.4428 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5572 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.8583 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 = 3.7642 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 4.3042 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.127 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.