Detailed Weather Data for Project: CHEN

Date Time TAIR WSPD RELH SRAD 04Nov2017 8 a.m. 40.44 4.60 100.44 1.00 04Nov2017 9 a.m. 40.89 2.92 100.56 20.00 04Nov2017 10 a.m. 41.99 0.89 100.68 50.00 04Nov2017 11 a.m. 42.87 2.58 100.81 76.00 04Nov2017 12 p.m. 44.19 4.22 100.93 109.00 04Nov2017 1 p.m. 45.93 3.78 101.04 169.00 04Nov2017 2 p.m. 47.05 3.80 101.17 177.00 04Nov2017 3 p.m. 48.34 0.75 101.22 105.00 04Nov2017 4 p.m. 48.79 5.69 101.11 58.00 04Nov2017 5 p.m. 50.02 4.97 100.44 40.00 04Nov2017 6 p.m. 50.02 6.43 99.65 21.00 04Nov2017 7 p.m. 49.68 7.67 99.63 1.00 04Nov2017 8 p.m. 44.08 3.18 81.08 0.00 04Nov2017 9 p.m. 50.13 9.14 99.58 0.00 04Nov2017 10 p.m. 48.92 4.95 99.71 0.00 04Nov2017 11 p.m. 48.04 7.00 100.01 1.00 05Nov2017 12 a.m. 46.38 5.93 100.50 1.00 05Nov2017 1 a.m. 46.06 6.65 100.68 1.00 05Nov2017 2 a.m. 46.94 2.28 100.81 1.00 05Nov2017 3 a.m. 48.24 7.95 100.92 1.00 05Nov2017 4 a.m. 49.14 9.81 100.87 1.00 05Nov2017 5 a.m. 48.90 8.74 100.98 1.00 05Nov2017 6 a.m. 48.92 8.30 100.93 1.00 05Nov2017 7 a.m. 48.34 12.98 100.79 2.00 Accuml. Values 1124.29 135.21 2394.54 837.00 Num. Valid Values 24 24 24 24 Avg. Values 46.85 5.63 99.77 34.88 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 8.25 217.55 99.77 71.97 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0023 definition: xcompl = 1 - (RELH_avg/100) TdC = 8.2123 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 = 0.5295 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4705 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.3177 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 = 0.0261 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.0425 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.000 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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