Detailed Weather Data for Project: FCOB

Date Time TAIR WSPD RELH SRAD 31Dec2017 8 a.m. 14.45 16.11 75.75 3.25 31Dec2017 9 a.m. 14.18 16.85 71.33 53.33 31Dec2017 10 a.m. 13.91 19.57 68.00 119.50 31Dec2017 11 a.m. 14.06 19.31 64.33 216.67 31Dec2017 12 p.m. 15.94 18.34 58.50 429.25 31Dec2017 1 p.m. 17.06 18.94 53.67 530.67 31Dec2017 2 p.m. 17.51 19.01 46.25 413.75 31Dec2017 3 p.m. 18.55 17.28 43.75 392.00 31Dec2017 4 p.m. 19.04 17.11 41.00 284.25 31Dec2017 5 p.m. 17.87 17.06 41.25 82.75 31Dec2017 6 p.m. 15.98 15.21 44.00 0.00 31Dec2017 7 p.m. 14.90 13.42 45.00 0.00 31Dec2017 8 p.m. 14.36 10.51 49.00 0.00 31Dec2017 9 p.m. 14.18 12.08 51.00 0.00 31Dec2017 10 p.m. 13.70 12.38 53.00 0.00 31Dec2017 11 p.m. 12.88 12.08 54.50 0.00 01Jan2018 12 a.m. 12.07 11.80 55.75 0.00 01Jan2018 1 a.m. 11.48 11.69 57.75 0.00 01Jan2018 2 a.m. 10.63 12.08 59.50 0.00 01Jan2018 3 a.m. 9.56 12.30 62.00 0.00 01Jan2018 4 a.m. 8.47 12.58 63.25 0.00 01Jan2018 5 a.m. 7.79 13.53 64.00 0.00 01Jan2018 6 a.m. 6.98 14.26 65.25 0.00 01Jan2018 7 a.m. 5.81 14.76 66.50 0.00 Accuml. Values 321.36 358.26 1354.33 2525.42 Num. Valid Values 24 24 24 24 Avg. Values 13.39 14.93 56.43 105.23 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -10.34 576.44 56.43 217.14 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4357 definition: xcompl = 1 - (RELH_avg/100) TdC = -17.3482 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 = 0.2524 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7476 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.7304 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 = 1.2248 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 2.5003 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.081 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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