Detailed Weather Data for Project: NEWT

Date Time TAIR WSPD RELH SRAD 07Mar2018 8 a.m. 31.30 4.90 71.10 41.50 07Mar2018 9 a.m. 32.88 7.50 67.28 213.10 07Mar2018 10 a.m. 35.71 9.40 57.64 453.80 07Mar2018 11 a.m. 37.04 9.60 55.41 667.60 07Mar2018 12 p.m. 39.09 8.50 50.83 766.80 07Mar2018 1 p.m. 42.17 8.40 45.01 810.30 07Mar2018 2 p.m. 44.89 10.30 40.73 777.80 07Mar2018 3 p.m. 47.62 9.20 36.71 687.10 07Mar2018 4 p.m. 49.93 8.00 31.61 539.10 07Mar2018 5 p.m. 52.11 9.10 25.87 349.30 07Mar2018 6 p.m. 52.32 8.00 23.59 138.00 07Mar2018 7 p.m. 54.75 3.20 35.16 3.90 07Mar2018 8 p.m. 45.70 0.60 41.63 0.00 07Mar2018 9 p.m. 41.20 0.10 55.88 0.00 07Mar2018 10 p.m. 38.77 0.30 62.70 0.00 07Mar2018 11 p.m. 36.63 0.60 66.45 0.00 08Mar2018 12 a.m. 33.22 1.00 74.50 0.00 08Mar2018 1 a.m. 31.64 1.20 82.06 0.00 08Mar2018 2 a.m. 30.27 1.90 83.04 0.00 08Mar2018 3 a.m. 29.52 1.40 86.43 0.00 08Mar2018 4 a.m. 29.35 0.50 88.66 0.00 08Mar2018 5 a.m. 28.06 2.40 89.78 0.00 08Mar2018 6 a.m. 27.30 2.50 90.29 0.00 08Mar2018 7 a.m. 27.57 1.60 91.14 0.00 Accuml. Values 919.04 110.20 1453.50 5448.30 Num. Valid Values 24 24 24 24 Avg. Values 38.29 4.59 60.56 227.01 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 3.50 177.31 60.56 468.44 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3944 definition: xcompl = 1 - (RELH_avg/100) TdC = -3.3860 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 = 0.4575 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5425 definition: del_lambda2 = 1 - del_lambda1 Qn = 3.9330 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 = 3.1043 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.5314 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.125 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.