Detailed Weather Data for Project: CANT

Date Time TAIR WSPD RELH SRAD 07Mar2018 8 a.m. 31.80 0.70 64.82 104.50 07Mar2018 9 a.m. 36.52 1.20 55.35 355.50 07Mar2018 10 a.m. 40.30 1.40 49.56 566.70 07Mar2018 11 a.m. 43.68 1.20 40.63 713.50 07Mar2018 12 p.m. 47.10 1.50 29.11 818.80 07Mar2018 1 p.m. 49.12 2.30 25.10 855.10 07Mar2018 2 p.m. 51.31 2.10 22.01 824.60 07Mar2018 3 p.m. 53.15 1.30 19.29 729.00 07Mar2018 4 p.m. 54.68 1.20 18.45 574.30 07Mar2018 5 p.m. 54.23 1.30 18.08 379.70 07Mar2018 6 p.m. 54.99 1.10 18.49 147.20 07Mar2018 7 p.m. 61.88 5.60 24.87 5.80 07Mar2018 8 p.m. 47.12 4.10 26.91 0.00 07Mar2018 9 p.m. 44.11 4.00 32.08 0.00 07Mar2018 10 p.m. 42.33 3.20 36.27 0.00 07Mar2018 11 p.m. 40.73 2.20 40.09 0.00 08Mar2018 12 a.m. 40.14 3.40 39.48 0.00 08Mar2018 1 a.m. 38.28 2.00 45.22 0.00 08Mar2018 2 a.m. 32.34 0.40 64.65 0.00 08Mar2018 3 a.m. 36.55 2.40 53.00 0.00 08Mar2018 4 a.m. 34.09 1.10 59.43 0.00 08Mar2018 5 a.m. 29.62 1.40 74.47 0.00 08Mar2018 6 a.m. -901.00 -901.00 -901.00 -901.00 08Mar2018 7 a.m. 28.04 1.20 78.18 0.00 Accuml. Values 992.12 46.30 935.54 6074.70 Num. Valid Values 23 23 23 23 Avg. Values 43.14 2.01 40.68 264.12 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 6.19 77.74 40.68 545.01 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5932 definition: xcompl = 1 - (RELH_avg/100) TdC = -6.3094 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 = 0.4986 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5014 definition: del_lambda2 = 1 - del_lambda1 Qn = 5.1322 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 = 5.6835 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.9779 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.160 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.