Detailed Weather Data for Project: GSAL

Date Time TAIR WSPD RELH SRAD 07Mar2018 8 a.m. 25.25 4.60 75.32 90.00 07Mar2018 9 a.m. 28.20 8.20 70.68 337.60 07Mar2018 10 a.m. 33.78 6.80 56.90 545.60 07Mar2018 11 a.m. 39.54 8.10 40.10 749.00 07Mar2018 12 p.m. 43.65 7.90 29.99 873.90 07Mar2018 1 p.m. 46.94 9.40 24.08 923.90 07Mar2018 2 p.m. 49.37 8.50 22.20 899.00 07Mar2018 3 p.m. 50.47 7.80 23.80 798.50 07Mar2018 4 p.m. 51.10 10.60 27.49 633.80 07Mar2018 5 p.m. 53.02 8.00 22.09 421.80 07Mar2018 6 p.m. 54.10 5.60 20.18 186.60 07Mar2018 7 p.m. 62.28 6.00 21.93 9.10 07Mar2018 8 p.m. 44.80 1.30 29.03 0.00 07Mar2018 9 p.m. 44.87 4.00 28.65 0.00 07Mar2018 10 p.m. 43.52 5.50 30.56 0.00 07Mar2018 11 p.m. 43.72 7.20 30.99 0.00 08Mar2018 12 a.m. 41.97 6.10 35.98 0.00 08Mar2018 1 a.m. 36.61 1.40 48.58 0.00 08Mar2018 2 a.m. 34.59 0.30 53.44 0.00 08Mar2018 3 a.m. 32.34 2.00 57.36 0.00 08Mar2018 4 a.m. 32.16 4.50 48.96 0.00 08Mar2018 5 a.m. 30.74 4.90 51.12 0.00 08Mar2018 6 a.m. 29.03 4.80 54.56 0.00 08Mar2018 7 a.m. 27.82 4.80 57.44 0.00 Accuml. Values 979.88 138.30 961.43 6468.80 Num. Valid Values 24 24 24 24 Avg. Values 40.83 5.76 40.06 269.53 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.90 222.52 40.06 556.19 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5994 definition: xcompl = 1 - (RELH_avg/100) TdC = -7.6701 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 = 0.4791 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5209 definition: del_lambda2 = 1 - del_lambda1 Qn = 5.1710 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 = 5.2570 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 4.5891 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.192 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.