Detailed Weather Data for Project: KEYS

Date Time TAIR WSPD RELH SRAD 06Dec2017 8 a.m. 35.42 9.42 59.36 24.00 06Dec2017 9 a.m. 37.06 9.19 59.00 220.00 06Dec2017 10 a.m. 39.36 6.49 51.79 399.00 06Dec2017 11 a.m. 43.11 5.24 51.11 534.00 06Dec2017 12 p.m. 46.96 5.63 44.52 607.00 06Dec2017 1 p.m. 50.14 5.19 40.98 491.00 06Dec2017 2 p.m. 51.67 8.47 35.42 40.00 06Dec2017 3 p.m. 52.79 11.66 34.87 127.00 06Dec2017 4 p.m. 53.10 13.40 39.33 198.00 06Dec2017 5 p.m. 52.45 14.76 37.98 77.00 06Dec2017 6 p.m. 50.02 16.15 38.35 3.00 06Dec2017 7 p.m. 33.33 11.12 39.57 1.00 06Dec2017 8 p.m. 46.29 8.19 37.07 0.00 06Dec2017 9 p.m. 44.42 3.22 51.97 0.00 06Dec2017 10 p.m. 42.44 4.57 56.91 0.00 06Dec2017 11 p.m. 41.88 5.49 58.56 0.00 07Dec2017 12 a.m. 39.25 11.09 50.62 0.00 07Dec2017 1 a.m. 38.16 12.51 55.14 0.00 07Dec2017 2 a.m. 35.51 15.33 62.47 0.00 07Dec2017 3 a.m. 33.53 14.43 58.74 0.00 07Dec2017 4 a.m. 32.11 15.59 52.94 0.00 07Dec2017 5 a.m. 28.81 17.85 56.43 0.00 07Dec2017 6 a.m. 27.05 16.74 60.22 0.00 07Dec2017 7 a.m. 25.95 15.36 64.48 0.00 Accuml. Values 980.81 257.09 1197.83 2721.00 Num. Valid Values 24 24 24 24 Avg. Values 40.87 10.71 49.91 113.38 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 4.93 413.66 49.91 233.95 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5009 definition: xcompl = 1 - (RELH_avg/100) TdC = -4.6904 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 = 0.4794 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5206 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.2889 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 = 4.3836 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 5.9460 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.146 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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