Detailed Weather Data for Project: FCOB

Date Time TAIR WSPD RELH SRAD 03Dec2017 8 a.m. 42.39 2.24 97.25 15.00 03Dec2017 9 a.m. 44.54 2.39 97.67 50.00 03Dec2017 10 a.m. 48.60 5.31 94.25 167.75 03Dec2017 11 a.m. 53.54 4.70 87.67 129.00 03Dec2017 12 p.m. 59.58 9.45 71.25 345.50 03Dec2017 1 p.m. 65.78 9.39 61.33 380.33 03Dec2017 2 p.m. 73.22 16.16 52.00 550.50 03Dec2017 3 p.m. 73.85 21.19 52.50 394.50 03Dec2017 4 p.m. 73.89 21.08 53.50 254.75 03Dec2017 5 p.m. 71.69 17.22 56.25 95.00 03Dec2017 6 p.m. 65.48 8.50 71.00 0.00 03Dec2017 7 p.m. 64.94 13.20 74.00 0.00 03Dec2017 8 p.m. 63.32 9.39 78.00 0.00 03Dec2017 9 p.m. 64.58 17.45 80.00 0.00 03Dec2017 10 p.m. 63.23 15.88 85.00 0.00 03Dec2017 11 p.m. 62.60 17.67 89.75 0.00 04Dec2017 12 a.m. 62.51 19.63 91.00 0.00 04Dec2017 1 a.m. 63.00 20.75 90.75 0.00 04Dec2017 2 a.m. 63.23 19.68 90.25 0.00 04Dec2017 3 a.m. 63.62 16.78 89.33 0.00 04Dec2017 4 a.m. 63.90 18.29 88.75 0.00 04Dec2017 5 a.m. 65.48 20.69 84.00 0.00 04Dec2017 6 a.m. 65.70 20.69 82.25 0.00 04Dec2017 7 a.m. 65.21 20.69 82.50 0.00 Accuml. Values 1503.88 348.42 1900.25 2382.33 Num. Valid Values 24 24 24 24 Avg. Values 62.66 14.52 79.18 99.26 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 17.03 560.61 79.18 204.83 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2082 definition: xcompl = 1 - (RELH_avg/100) TdC = 13.4379 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 = 0.6508 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3492 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.4221 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 = 4.0055 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 6.9374 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.132 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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