Detailed Weather Data for Project: MARI

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 48.02 14.78 100.67 8.00 05Nov2017 9 a.m. 48.58 13.19 99.95 54.00 05Nov2017 10 a.m. 47.03 15.89 99.39 52.00 05Nov2017 11 a.m. 44.73 21.00 97.25 82.00 05Nov2017 12 p.m. 45.28 17.31 88.11 216.00 05Nov2017 1 p.m. 47.14 19.28 78.02 619.00 05Nov2017 2 p.m. 47.80 19.89 71.50 567.00 05Nov2017 3 p.m. 46.81 19.71 72.22 444.00 05Nov2017 4 p.m. 46.38 18.04 72.96 114.00 05Nov2017 5 p.m. 46.15 14.88 75.95 28.00 05Nov2017 6 p.m. 45.05 5.57 79.30 1.00 05Nov2017 7 p.m. 41.43 6.35 58.55 0.00 05Nov2017 8 p.m. 43.30 3.10 81.15 1.00 05Nov2017 9 p.m. 40.57 9.00 80.96 0.00 05Nov2017 10 p.m. 38.80 8.12 73.51 0.00 05Nov2017 11 p.m. 38.35 10.28 68.26 0.00 06Nov2017 12 a.m. 37.69 11.19 64.22 0.00 06Nov2017 1 a.m. 35.73 8.64 65.94 0.00 06Nov2017 2 a.m. 35.40 6.21 70.09 0.00 06Nov2017 3 a.m. 35.28 7.54 73.57 0.00 06Nov2017 4 a.m. 33.75 5.21 75.22 0.00 06Nov2017 5 a.m. 33.98 7.45 80.24 0.00 06Nov2017 6 a.m. 32.54 8.24 84.20 0.00 06Nov2017 7 a.m. 32.32 7.46 84.82 2.00 Accuml. Values 992.12 278.33 1896.05 2188.00 Num. Valid Values 24 24 24 24 Avg. Values 41.34 11.60 79.00 91.17 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 5.19 447.83 79.00 188.12 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2100 definition: xcompl = 1 - (RELH_avg/100) TdC = 1.8575 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 = 0.4834 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5166 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.8102 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 = 1.8588 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.9657 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.076 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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