Detailed Weather Data for Project: KEYS

Date Time TAIR WSPD RELH SRAD 08Nov2017 8 a.m. 41.00 5.69 65.40 14.00 08Nov2017 9 a.m. 41.45 4.42 63.45 82.00 08Nov2017 10 a.m. 43.77 5.80 58.57 313.00 08Nov2017 11 a.m. 45.84 6.72 57.22 380.00 08Nov2017 12 p.m. 49.37 3.73 52.15 451.00 08Nov2017 1 p.m. 52.11 6.22 44.33 372.00 08Nov2017 2 p.m. 53.55 6.34 41.59 62.00 08Nov2017 3 p.m. 54.10 4.23 38.29 203.00 08Nov2017 4 p.m. 55.40 3.60 38.10 204.00 08Nov2017 5 p.m. 54.30 3.40 37.68 109.00 08Nov2017 6 p.m. 53.10 5.03 37.74 6.00 08Nov2017 7 p.m. 51.01 2.96 61.61 0.00 08Nov2017 8 p.m. 46.51 1.35 57.22 0.00 08Nov2017 9 p.m. 47.71 3.46 65.22 0.00 08Nov2017 10 p.m. 45.84 3.41 67.17 0.00 08Nov2017 11 p.m. 40.46 0.47 81.28 0.00 09Nov2017 12 a.m. 38.70 1.62 89.70 0.00 09Nov2017 1 a.m. 37.38 0.80 91.78 0.00 09Nov2017 2 a.m. 36.82 2.40 94.27 0.00 09Nov2017 3 a.m. 36.72 0.81 94.28 0.00 09Nov2017 4 a.m. 38.91 3.19 90.99 0.00 09Nov2017 5 a.m. 39.69 2.65 89.52 0.00 09Nov2017 6 a.m. 40.24 5.62 91.54 0.00 09Nov2017 7 a.m. 39.69 4.28 92.27 1.00 Accuml. Values 1083.67 88.20 1601.37 2197.00 Num. Valid Values 24 24 24 24 Avg. Values 45.15 3.68 66.72 91.54 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 7.31 141.91 66.72 188.90 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.3328 definition: xcompl = 1 - (RELH_avg/100) TdC = 1.5764 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 = 0.5155 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4845 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.8813 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 = 3.3951 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.4380 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.064 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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