Detailed Weather Data for Project: KAWL

Date Time TAIR WSPD RELH SRAD 02Dec2017 8 a.m. 46.18 6.50 82.49 11.50 02Dec2017 9 a.m. 46.78 6.30 80.61 148.10 02Dec2017 10 a.m. 48.97 4.90 78.42 307.40 02Dec2017 11 a.m. 51.10 6.30 78.51 432.60 02Dec2017 12 p.m. 54.72 6.00 73.76 506.00 02Dec2017 1 p.m. 56.93 8.20 69.07 517.20 02Dec2017 2 p.m. 59.50 8.00 63.94 465.00 02Dec2017 3 p.m. 60.89 9.00 63.73 363.30 02Dec2017 4 p.m. 60.87 9.50 65.75 247.70 02Dec2017 5 p.m. 64.33 5.90 54.38 79.90 02Dec2017 6 p.m. 62.91 5.30 55.27 0.00 02Dec2017 7 p.m. 64.44 13.10 72.78 0.00 02Dec2017 8 p.m. 55.47 7.70 78.72 0.00 02Dec2017 9 p.m. 53.53 8.80 85.06 0.00 02Dec2017 10 p.m. 52.48 8.60 87.96 0.00 02Dec2017 11 p.m. 51.82 9.10 89.14 0.00 03Dec2017 12 a.m. 51.40 7.20 90.39 0.00 03Dec2017 1 a.m. 51.15 6.50 90.64 0.00 03Dec2017 2 a.m. 51.35 7.40 89.62 0.00 03Dec2017 3 a.m. 50.99 9.00 90.17 0.00 03Dec2017 4 a.m. 50.29 10.70 90.27 0.00 03Dec2017 5 a.m. 50.34 8.80 86.99 0.00 03Dec2017 6 a.m. 50.23 5.10 87.14 0.00 03Dec2017 7 a.m. 50.20 3.20 87.61 0.00 Accuml. Values 1296.88 181.10 1892.42 3078.70 Num. Valid Values 24 24 24 24 Avg. Values 54.04 7.55 78.85 128.28 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 12.24 291.39 78.85 264.71 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2115 definition: xcompl = 1 - (RELH_avg/100) TdC = 8.7066 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 = 0.5871 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4129 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.9493 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 = 2.9984 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.3248 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.099 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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