Detailed Weather Data for Project: PATM

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 71.56 17.94 99.05 56.00 05Nov2017 9 a.m. 72.66 15.86 96.79 143.00 05Nov2017 10 a.m. 74.43 15.12 91.60 232.00 05Nov2017 11 a.m. 76.95 17.49 82.13 383.00 05Nov2017 12 p.m. 78.82 16.16 75.17 589.00 05Nov2017 1 p.m. 78.60 15.30 72.73 338.00 05Nov2017 2 p.m. 82.00 15.58 65.71 563.00 05Nov2017 3 p.m. 81.01 13.59 66.26 473.00 05Nov2017 4 p.m. 83.98 13.24 57.28 220.00 05Nov2017 5 p.m. 81.46 5.43 69.31 83.00 05Nov2017 6 p.m. 78.60 12.26 79.32 -2.00 05Nov2017 7 p.m. 57.27 6.69 98.01 -3.00 05Nov2017 8 p.m. 76.73 6.41 67.54 -3.00 05Nov2017 9 p.m. 69.04 11.41 54.84 -3.00 05Nov2017 10 p.m. 67.82 7.11 59.78 -3.00 05Nov2017 11 p.m. 63.99 7.74 74.56 -3.00 06Nov2017 12 a.m. 60.57 6.64 82.68 -3.00 06Nov2017 1 a.m. 58.60 5.40 87.63 -3.00 06Nov2017 2 a.m. 57.38 2.80 91.90 -3.00 06Nov2017 3 a.m. 56.39 1.36 96.12 -2.00 06Nov2017 4 a.m. 56.52 0.31 94.96 -3.00 06Nov2017 5 a.m. 57.16 1.31 94.04 -3.00 06Nov2017 6 a.m. 59.14 2.28 91.05 -3.00 06Nov2017 7 a.m. 59.58 1.60 92.15 0.00 Accuml. Values 1660.28 219.03 1940.61 3043.00 Num. Valid Values 24 24 24 24 Avg. Values 69.18 9.13 80.86 126.79 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 20.65 352.42 80.86 261.64 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1914 definition: xcompl = 1 - (RELH_avg/100) TdC = 17.2891 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 = 0.6943 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3057 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.3545 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 = 4.6082 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 5.5320 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.131 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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