Detailed Weather Data for Project: FCOB

Date Time TAIR WSPD RELH SRAD 30Dec2017 8 a.m. 21.56 17.67 84.50 1.00 30Dec2017 9 a.m. 20.12 14.54 88.67 9.33 30Dec2017 10 a.m. 19.00 15.10 91.00 27.25 30Dec2017 11 a.m. 18.32 15.43 92.00 53.67 30Dec2017 12 p.m. 18.10 13.70 91.75 77.25 30Dec2017 1 p.m. 18.14 12.97 91.33 85.33 30Dec2017 2 p.m. 18.14 12.97 88.25 102.25 30Dec2017 3 p.m. 18.91 12.14 84.50 112.00 30Dec2017 4 p.m. 19.36 11.58 79.50 78.50 30Dec2017 5 p.m. 19.13 10.29 75.25 28.25 30Dec2017 6 p.m. 18.32 10.07 73.00 0.00 30Dec2017 7 p.m. 18.14 10.74 75.00 0.00 30Dec2017 8 p.m. 18.14 8.72 76.00 0.00 30Dec2017 9 p.m. 18.14 5.29 77.33 0.00 30Dec2017 10 p.m. 17.96 3.75 84.00 0.00 30Dec2017 11 p.m. 17.78 4.36 88.00 0.00 31Dec2017 12 a.m. 18.28 7.10 88.75 0.00 31Dec2017 1 a.m. 18.73 11.24 90.25 0.00 31Dec2017 2 a.m. 18.64 13.81 91.00 0.00 31Dec2017 3 a.m. 18.62 13.57 91.00 0.00 31Dec2017 4 a.m. 18.86 16.83 87.50 0.00 31Dec2017 5 a.m. 17.33 19.68 83.00 0.00 31Dec2017 6 a.m. 15.94 19.13 83.75 0.00 31Dec2017 7 a.m. 15.26 12.97 84.00 0.00 Accuml. Values 440.92 293.65 2039.33 574.83 Num. Valid Values 24 24 24 24 Avg. Values 18.37 12.24 84.97 23.95 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -7.57 472.48 84.97 49.42 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1503 definition: xcompl = 1 - (RELH_avg/100) TdC = -9.6779 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 = 0.2905 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7095 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.6387 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 = 0.5296 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.0232 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.021 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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