Detailed Weather Data for Project: KEYS

Date Time TAIR WSPD RELH SRAD 03Mar2018 8 a.m. 46.94 9.45 69.06 113.00 03Mar2018 9 a.m. 50.77 8.06 62.77 328.00 03Mar2018 10 a.m. 54.86 9.44 57.22 523.00 03Mar2018 11 a.m. 58.60 7.98 50.26 487.00 03Mar2018 12 p.m. 62.78 10.22 46.47 683.00 03Mar2018 1 p.m. 65.19 9.76 44.88 783.00 03Mar2018 2 p.m. 67.60 10.14 42.50 743.00 03Mar2018 3 p.m. 68.47 12.22 41.46 590.00 03Mar2018 4 p.m. 69.48 11.69 40.67 430.00 03Mar2018 5 p.m. 68.70 10.43 41.09 305.00 03Mar2018 6 p.m. 67.50 10.52 42.62 107.00 03Mar2018 7 p.m. 56.28 10.69 82.93 2.00 03Mar2018 8 p.m. 63.43 10.58 46.77 0.00 03Mar2018 9 p.m. 62.33 8.48 47.87 0.00 03Mar2018 10 p.m. 60.46 6.35 50.07 0.00 03Mar2018 11 p.m. 59.58 7.54 50.13 0.00 04Mar2018 12 a.m. 58.80 7.62 49.95 0.00 04Mar2018 1 a.m. 58.26 9.31 50.20 0.00 04Mar2018 2 a.m. 57.70 9.81 49.33 0.00 04Mar2018 3 a.m. 55.72 10.66 51.59 0.00 04Mar2018 4 a.m. 54.97 9.75 51.60 0.00 04Mar2018 5 a.m. 54.52 11.95 53.00 0.00 04Mar2018 6 a.m. 54.63 10.06 53.43 0.00 04Mar2018 7 a.m. 53.74 9.78 56.11 1.00 Accuml. Values 1431.32 232.49 1231.98 5095.00 Num. Valid Values 24 24 24 24 Avg. Values 59.64 9.69 51.33 212.29 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 15.35 374.08 51.33 438.07 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4867 definition: xcompl = 1 - (RELH_avg/100) TdC = 5.3773 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 = 0.6292 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3708 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.4401 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 = 8.4964 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 9.8904 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.254 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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