Detailed Weather Data for Project: KEYS

Date Time TAIR WSPD RELH SRAD 05Dec2017 8 a.m. 35.51 10.27 39.63 2.00 05Dec2017 9 a.m. 35.96 5.73 41.71 16.00 05Dec2017 10 a.m. 36.50 8.41 40.24 49.00 05Dec2017 11 a.m. 37.71 9.92 33.34 115.00 05Dec2017 12 p.m. 39.69 8.40 29.37 358.00 05Dec2017 1 p.m. 42.98 7.58 25.65 372.00 05Dec2017 2 p.m. 44.74 6.58 28.52 200.00 05Dec2017 3 p.m. 45.41 6.50 31.02 178.00 05Dec2017 4 p.m. 45.30 6.60 26.20 156.00 05Dec2017 5 p.m. 45.07 7.21 27.30 43.00 05Dec2017 6 p.m. 42.98 6.57 31.14 2.00 05Dec2017 7 p.m. 47.93 10.28 45.13 1.00 05Dec2017 8 p.m. 40.68 7.77 36.76 0.00 05Dec2017 9 p.m. 39.49 6.77 40.67 0.00 05Dec2017 10 p.m. 38.16 6.94 43.97 0.00 05Dec2017 11 p.m. 38.26 6.39 43.42 0.00 06Dec2017 12 a.m. 38.71 5.78 44.83 0.00 06Dec2017 1 a.m. 38.50 8.65 46.17 0.00 06Dec2017 2 a.m. 39.79 8.21 42.01 0.00 06Dec2017 3 a.m. 36.61 8.74 45.00 0.00 06Dec2017 4 a.m. 37.06 8.03 48.00 0.00 06Dec2017 5 a.m. 38.05 8.30 46.84 0.00 06Dec2017 6 a.m. 36.18 8.26 51.36 1.00 06Dec2017 7 a.m. 35.62 10.14 57.28 0.00 Accuml. Values 956.87 188.03 945.56 1493.00 Num. Valid Values 24 24 24 24 Avg. Values 39.87 7.83 39.40 62.21 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.37 302.54 39.40 128.37 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.6060 definition: xcompl = 1 - (RELH_avg/100) TdC = -8.3691 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 = 0.4709 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5291 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.1830 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 = 5.1222 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 5.4624 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.117 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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