Detailed Weather Data for Project: MERE

Date Time TAIR WSPD RELH SRAD 05Nov2017 8 a.m. 18.89 9.00 44.00 122.00 05Nov2017 9 a.m. 21.67 13.00 37.00 239.00 05Nov2017 10 a.m. 22.78 7.00 34.00 434.00 05Nov2017 11 a.m. 19.44 6.00 38.00 545.00 05Nov2017 12 p.m. 17.78 9.00 43.00 599.00 05Nov2017 1 p.m. 18.33 7.00 43.00 597.00 05Nov2017 2 p.m. 17.78 8.00 43.00 534.00 05Nov2017 3 p.m. 17.22 7.00 44.00 420.00 05Nov2017 4 p.m. 16.67 8.00 45.00 266.00 05Nov2017 5 p.m. 13.33 8.00 54.00 82.00 05Nov2017 6 p.m. -901.00 -901.00 -901.00 -901.00 05Nov2017 7 p.m. 8.89 9.00 68.00 3.00 05Nov2017 8 p.m. 8.33 7.00 77.00 0.00 05Nov2017 9 p.m. 6.67 7.00 81.00 0.00 05Nov2017 10 p.m. 5.56 7.00 85.00 0.00 05Nov2017 11 p.m. 5.00 7.00 87.00 0.00 06Nov2017 12 a.m. 5.00 6.00 88.00 0.00 06Nov2017 1 a.m. 5.00 8.00 89.00 0.00 06Nov2017 2 a.m. 5.00 6.00 90.00 0.00 06Nov2017 3 a.m. 5.00 5.00 91.00 0.00 06Nov2017 4 a.m. 5.00 5.00 90.00 0.00 06Nov2017 5 a.m. 5.56 3.00 90.00 0.00 06Nov2017 6 a.m. 5.56 2.00 90.00 0.00 06Nov2017 7 a.m. 5.56 2.00 92.00 1.00 Accuml. Values 260.00 156.00 1543.00 3842.00 Num. Valid Values 23 23 23 23 Avg. Values 11.30 6.78 67.09 167.04 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -11.50 261.92 67.09 344.70 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3291 definition: xcompl = 1 - (RELH_avg/100) TdC = -16.3600 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 = 0.2371 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7629 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.8667 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 = 0.8403 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.0121 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.048 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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