Detailed Weather Data for Project: FGIB

Date Time TAIR WSPD RELH SRAD 29Dec2017 8 a.m. 33.17 3.59 51.40 2.00 29Dec2017 9 a.m. 33.73 2.72 51.58 23.00 29Dec2017 10 a.m. 34.39 4.23 48.04 53.00 29Dec2017 11 a.m. 36.14 5.58 48.16 101.00 29Dec2017 12 p.m. 38.23 3.88 51.95 152.00 29Dec2017 1 p.m. 40.10 3.42 49.44 244.00 29Dec2017 2 p.m. 41.76 2.86 49.93 177.00 29Dec2017 3 p.m. 44.17 2.34 49.81 131.00 29Dec2017 4 p.m. 46.60 3.19 48.11 231.00 29Dec2017 5 p.m. 43.74 2.07 60.44 79.00 29Dec2017 6 p.m. 41.54 1.14 66.00 4.00 29Dec2017 7 p.m. 27.14 1.74 71.30 0.00 29Dec2017 8 p.m. 40.87 1.44 74.72 0.00 29Dec2017 9 p.m. 41.31 1.17 68.49 0.00 29Dec2017 10 p.m. 40.98 0.28 73.63 0.00 29Dec2017 11 p.m. 41.65 0.35 71.25 0.00 30Dec2017 12 a.m. 41.09 0.53 70.14 0.00 30Dec2017 1 a.m. 40.66 1.53 75.27 1.00 30Dec2017 2 a.m. 40.23 1.56 72.65 0.00 30Dec2017 3 a.m. 40.66 0.41 71.66 0.00 30Dec2017 4 a.m. 40.53 0.89 72.40 0.00 30Dec2017 5 a.m. 40.44 2.13 74.18 1.00 30Dec2017 6 a.m. 36.14 2.26 77.52 0.00 30Dec2017 7 a.m. 33.19 1.78 81.62 0.00 Accuml. Values 938.44 51.09 1529.69 1199.00 Num. Valid Values 24 24 24 24 Avg. Values 39.10 2.13 63.74 49.96 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 3.95 82.20 63.74 103.09 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3626 definition: xcompl = 1 - (RELH_avg/100) TdC = -2.2640 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 = 0.4644 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5356 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.0705 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 = 2.9406 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.7010 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.035 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.