Detailed Weather Data for Project: SKIA

Date Time TAIR WSPD RELH SRAD 04Nov2017 8 a.m. -901.00 3.15 100.05 0.00 04Nov2017 9 a.m. -901.00 2.93 100.05 4.17 04Nov2017 10 a.m. -901.00 2.62 100.05 26.77 04Nov2017 11 a.m. -901.00 3.30 100.05 52.99 04Nov2017 12 p.m. -901.00 2.86 100.01 96.93 04Nov2017 1 p.m. -901.00 1.17 95.33 117.01 04Nov2017 2 p.m. -901.00 3.20 90.27 215.57 04Nov2017 3 p.m. -901.00 4.45 81.42 480.91 04Nov2017 4 p.m. -901.00 2.21 76.05 397.71 04Nov2017 5 p.m. -901.00 1.34 68.21 258.71 04Nov2017 6 p.m. -901.00 2.67 71.12 75.76 04Nov2017 7 p.m. -901.00 2.50 75.16 0.00 04Nov2017 8 p.m. -901.00 9.04 75.60 0.00 04Nov2017 9 p.m. -901.00 3.33 89.79 0.00 04Nov2017 10 p.m. -901.00 4.75 92.52 0.00 04Nov2017 11 p.m. -901.00 4.15 95.91 0.00 05Nov2017 12 a.m. -901.00 2.87 100.05 0.00 05Nov2017 1 a.m. -901.00 2.50 99.55 0.00 05Nov2017 2 a.m. -901.00 3.94 100.00 0.00 05Nov2017 3 a.m. -901.00 4.51 99.97 0.00 05Nov2017 4 a.m. -901.00 4.32 100.05 0.00 05Nov2017 5 a.m. -901.00 6.14 93.91 0.00 05Nov2017 6 a.m. -901.00 10.47 88.30 0.00 05Nov2017 7 a.m. -901.00 11.75 84.97 0.00 Accuml. Values 0.00 100.17 2178.39 1726.53 Num. Valid Values 0 24 24 24 Avg. Values 4.17 90.77 71.94 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -17.78 161.17 90.77 148.45 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.0923 definition: xcompl = 1 - (RELH_avg/100) TdC = -18.9447 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 = 0.1635 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.8365 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.0939 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 = 0.1439 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 0.1612 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.006 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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