Detailed Weather Data for Project: FSUP

Date Time TAIR WSPD RELH SRAD 02Jan2018 8 a.m. 7.02 1.40 53.79 0.00 02Jan2018 9 a.m. 7.45 1.90 52.86 11.10 02Jan2018 10 a.m. 9.00 3.10 51.58 140.50 02Jan2018 11 a.m. 11.10 3.30 50.51 300.90 02Jan2018 12 p.m. 13.71 3.40 46.61 277.70 02Jan2018 1 p.m. 17.33 3.30 40.61 604.10 02Jan2018 2 p.m. 20.61 3.90 37.75 521.00 02Jan2018 3 p.m. 22.75 3.30 35.48 489.30 02Jan2018 4 p.m. 22.86 2.70 35.56 29.90 02Jan2018 5 p.m. 23.70 3.00 33.93 17.40 02Jan2018 6 p.m. 23.23 1.70 34.73 3.00 02Jan2018 7 p.m. 38.12 1.10 39.25 0.00 02Jan2018 8 p.m. 17.71 2.60 43.22 0.00 02Jan2018 9 p.m. 15.91 2.90 50.50 0.00 02Jan2018 10 p.m. 13.44 4.00 57.15 0.00 02Jan2018 11 p.m. 12.56 3.70 57.85 0.00 03Jan2018 12 a.m. 9.90 3.50 61.92 0.00 03Jan2018 1 a.m. 9.48 1.40 61.44 0.00 03Jan2018 2 a.m. 12.42 2.40 60.45 0.00 03Jan2018 3 a.m. 15.39 10.20 52.26 0.00 03Jan2018 4 a.m. 16.61 10.80 48.62 0.00 03Jan2018 5 a.m. 18.32 7.90 45.68 0.00 03Jan2018 6 a.m. 19.08 9.50 45.17 0.00 03Jan2018 7 a.m. 19.80 11.90 44.02 0.00 Accuml. Values 397.47 102.90 1140.94 2394.90 Num. Valid Values 24 24 24 24 Avg. Values 16.56 4.29 47.54 99.79 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -8.58 165.57 47.54 205.91 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5246 definition: xcompl = 1 - (RELH_avg/100) TdC = -17.7962 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 = 0.2764 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7236 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.6611 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 = 1.7013 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.4368 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.048 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.