Detailed Weather Data for Project: FCOB

Date Time TAIR WSPD RELH SRAD 02Dec2017 8 a.m. 41.81 4.98 98.50 12.25 02Dec2017 9 a.m. 45.26 5.74 98.00 148.00 02Dec2017 10 a.m. 50.67 7.77 87.00 313.25 02Dec2017 11 a.m. 55.16 6.26 75.67 440.67 02Dec2017 12 p.m. 59.45 4.81 67.25 512.00 02Dec2017 1 p.m. 62.78 4.03 61.33 533.33 02Dec2017 2 p.m. 64.67 5.20 58.25 488.75 02Dec2017 3 p.m. 66.29 4.19 55.50 373.50 02Dec2017 4 p.m. 66.96 4.87 54.25 259.75 02Dec2017 5 p.m. 64.76 6.82 57.75 107.50 02Dec2017 6 p.m. 55.94 6.49 75.00 0.00 02Dec2017 7 p.m. 54.14 6.04 80.00 0.00 02Dec2017 8 p.m. 53.06 4.92 84.00 0.00 02Dec2017 9 p.m. 49.73 4.81 88.00 0.00 02Dec2017 10 p.m. 48.20 3.80 92.00 0.00 02Dec2017 11 p.m. 46.85 3.75 93.75 0.00 03Dec2017 12 a.m. 46.89 4.64 94.00 0.00 03Dec2017 1 a.m. 46.62 4.14 95.00 0.00 03Dec2017 2 a.m. 46.35 3.02 95.25 0.00 03Dec2017 3 a.m. 46.64 3.36 96.00 0.00 03Dec2017 4 a.m. 46.04 3.52 96.00 0.00 03Dec2017 5 a.m. 45.77 3.58 96.00 0.00 03Dec2017 6 a.m. 44.51 3.36 96.25 0.00 03Dec2017 7 a.m. 43.07 3.69 97.00 0.00 Accuml. Values 1251.62 113.79 1991.75 3189.00 Num. Valid Values 24 24 24 24 Avg. Values 52.15 4.74 82.99 132.88 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 11.19 183.09 82.99 274.19 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.1701 definition: xcompl = 1 - (RELH_avg/100) TdC = 8.4184 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 = 0.5724 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4276 definition: del_lambda2 = 1 - del_lambda1 Qn = 2.0137 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 = 2.2628 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.9510 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.078 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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