Detailed Weather Data for Project: ELDR

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 52.41 11.10 101.09 2.60 05Nov2017 9 a.m. 52.07 10.20 99.36 20.80 05Nov2017 10 a.m. 52.00 10.90 96.98 73.70 05Nov2017 11 a.m. 52.79 10.00 88.91 59.10 05Nov2017 12 p.m. 52.03 10.10 86.03 73.40 05Nov2017 1 p.m. 49.95 7.30 85.91 103.20 05Nov2017 2 p.m. 52.09 7.20 78.06 173.10 05Nov2017 3 p.m. 53.91 7.70 68.28 171.10 05Nov2017 4 p.m. 54.63 6.70 63.55 153.20 05Nov2017 5 p.m. 53.96 7.50 62.81 108.10 05Nov2017 6 p.m. 50.29 6.60 69.51 2.60 05Nov2017 7 p.m. 45.97 10.00 67.02 0.00 05Nov2017 8 p.m. 45.88 4.30 81.14 0.10 05Nov2017 9 p.m. 46.69 9.00 82.98 0.10 05Nov2017 10 p.m. 46.58 8.90 81.32 0.10 05Nov2017 11 p.m. 44.87 6.40 84.15 0.20 06Nov2017 12 a.m. 43.36 7.30 81.02 0.10 06Nov2017 1 a.m. 42.76 5.80 77.33 0.30 06Nov2017 2 a.m. 41.95 8.70 76.00 0.00 06Nov2017 3 a.m. 40.55 8.00 77.29 0.00 06Nov2017 4 a.m. 39.36 9.10 79.42 0.00 06Nov2017 5 a.m. 38.57 5.70 81.73 0.00 06Nov2017 6 a.m. 37.99 7.10 83.40 0.00 06Nov2017 7 a.m. 37.31 8.90 83.54 0.00 Accuml. Values 1127.96 194.50 1936.83 941.80 Num. Valid Values 24 24 24 24 Avg. Values 47.00 8.10 80.70 39.24 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 8.33 312.95 80.70 80.98 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1930 definition: xcompl = 1 - (RELH_avg/100) TdC = 5.2209 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 = 0.5308 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4692 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.2257 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 = 2.1183 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.5699 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.043 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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