Detailed Weather Data for Project: MARI

Date Time TAIR WSPD RELH SRAD 03Dec2017 8 a.m. 32.20 2.46 99.63 14.00 03Dec2017 9 a.m. 36.37 3.45 99.88 114.00 03Dec2017 10 a.m. 48.34 7.70 98.60 325.00 03Dec2017 11 a.m. 59.45 8.21 76.50 394.00 03Dec2017 12 p.m. 64.17 10.68 66.41 537.00 03Dec2017 1 p.m. 67.14 12.86 54.57 532.00 03Dec2017 2 p.m. 68.13 16.50 48.78 476.00 03Dec2017 3 p.m. 67.48 17.43 48.78 349.00 03Dec2017 4 p.m. 65.26 18.30 55.67 181.00 03Dec2017 5 p.m. 62.62 16.64 56.65 25.00 03Dec2017 6 p.m. 60.76 16.90 61.53 0.00 03Dec2017 7 p.m. 42.75 37.35 58.78 0.00 03Dec2017 8 p.m. 61.41 18.08 75.27 0.00 03Dec2017 9 p.m. 61.21 18.51 79.55 0.00 03Dec2017 10 p.m. 61.00 17.76 80.77 0.00 03Dec2017 11 p.m. 61.65 19.77 79.12 0.00 04Dec2017 12 a.m. 62.64 20.70 78.33 0.00 04Dec2017 1 a.m. 62.85 22.88 82.90 0.00 04Dec2017 2 a.m. 63.73 21.79 85.29 0.00 04Dec2017 3 a.m. 64.17 23.25 84.42 0.00 04Dec2017 4 a.m. 63.95 22.20 84.25 0.00 04Dec2017 5 a.m. 63.50 21.82 86.62 0.00 04Dec2017 6 a.m. 63.30 20.41 87.24 0.00 04Dec2017 7 a.m. 62.85 18.28 87.96 0.00 Accuml. Values 1426.93 413.93 1817.50 2947.00 Num. Valid Values 24 24 24 24 Avg. Values 59.46 17.25 75.73 122.79 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 15.25 666.01 75.73 253.38 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2427 definition: xcompl = 1 - (RELH_avg/100) TdC = 11.0462 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 = 0.6279 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3721 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.9562 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 = 4.1655 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 8.2536 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.169 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.