Detailed Weather Data for Project: WAUR

Date Time TAIR WSPD RELH SRAD 08Nov2017 8 a.m. 45.16 0.00 92.24 9.00 08Nov2017 9 a.m. 45.27 0.00 92.48 35.00 08Nov2017 10 a.m. 45.16 0.00 92.54 41.00 08Nov2017 11 a.m. 45.48 0.00 89.24 77.00 08Nov2017 12 p.m. 45.81 0.00 86.25 135.00 08Nov2017 1 p.m. 46.36 0.00 82.22 127.00 08Nov2017 2 p.m. 46.58 0.00 80.58 135.00 08Nov2017 3 p.m. 47.14 0.00 78.27 118.00 08Nov2017 4 p.m. 48.24 0.00 75.45 95.00 08Nov2017 5 p.m. 49.23 0.00 72.95 67.00 08Nov2017 6 p.m. 46.69 0.00 76.12 13.00 08Nov2017 7 p.m. 68.79 0.00 62.87 0.00 08Nov2017 8 p.m. 43.72 0.00 83.45 0.00 08Nov2017 9 p.m. 43.72 0.00 82.22 0.00 08Nov2017 10 p.m. 45.70 0.00 84.42 0.00 08Nov2017 11 p.m. 41.31 0.00 83.93 1.00 09Nov2017 12 a.m. 42.30 0.00 88.57 0.00 09Nov2017 1 a.m. 42.19 0.00 90.04 1.00 09Nov2017 2 a.m. 39.11 0.00 94.55 0.00 09Nov2017 3 a.m. 37.02 0.00 95.23 1.00 09Nov2017 4 a.m. 36.25 0.00 95.04 1.00 09Nov2017 5 a.m. 39.11 0.00 98.46 1.00 09Nov2017 6 a.m. 44.71 0.00 97.67 1.00 09Nov2017 7 a.m. 34.93 0.00 98.10 1.00 Accuml. Values 1069.95 0.00 2072.89 859.00 Num. Valid Values 24 0 24 24 Avg. Values 44.58 86.37 35.79 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 6.99 0.00 86.37 73.86 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1363 definition: xcompl = 1 - (RELH_avg/100) TdC = 4.8559 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 = 0.5107 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4893 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.3139 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 = 1.3785 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.5571 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.004 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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