Detailed Weather Data for Project: KEYS

Date Time TAIR WSPD RELH SRAD 03Dec2017 8 a.m. 49.14 5.79 92.88 7.00 03Dec2017 9 a.m. 53.74 5.78 92.62 76.00 03Dec2017 10 a.m. 56.84 6.44 89.34 109.00 03Dec2017 11 a.m. 61.02 5.65 81.28 159.00 03Dec2017 12 p.m. 64.20 5.76 70.47 312.00 03Dec2017 1 p.m. 64.98 7.39 71.69 182.00 03Dec2017 2 p.m. 70.36 7.21 59.05 130.00 03Dec2017 3 p.m. 70.47 7.84 58.38 109.00 03Dec2017 4 p.m. 70.14 7.88 59.42 107.00 03Dec2017 5 p.m. 69.26 8.06 63.32 63.00 03Dec2017 6 p.m. 68.58 5.88 65.88 2.00 03Dec2017 7 p.m. 61.66 21.92 32.06 0.00 03Dec2017 8 p.m. 66.38 6.80 71.99 0.00 03Dec2017 9 p.m. 67.37 9.99 66.25 0.00 03Dec2017 10 p.m. 67.82 10.69 67.84 0.00 03Dec2017 11 p.m. 68.38 11.53 70.90 0.00 04Dec2017 12 a.m. 67.28 10.88 69.43 0.00 04Dec2017 1 a.m. 66.49 11.80 68.32 0.00 04Dec2017 2 a.m. 65.30 9.95 69.92 0.00 04Dec2017 3 a.m. 65.08 10.36 73.46 0.00 04Dec2017 4 a.m. 64.96 9.30 77.60 0.00 04Dec2017 5 a.m. 65.39 8.37 80.11 0.00 04Dec2017 6 a.m. 65.84 8.70 80.84 0.00 04Dec2017 7 a.m. 67.06 8.32 79.81 0.00 Accuml. Values 1557.73 212.29 1712.86 1256.00 Num. Valid Values 24 24 24 24 Avg. Values 64.91 8.85 71.37 52.33 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 18.28 341.57 71.37 107.99 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2863 definition: xcompl = 1 - (RELH_avg/100) TdC = 13.0924 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 = 0.6663 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3337 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.2575 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 = 5.9358 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 6.7617 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.096 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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