Detailed Weather Data for Project: FCOB

Date Time TAIR WSPD RELH SRAD 05Dec2017 8 a.m. 35.82 9.95 29.25 5.00 05Dec2017 9 a.m. 35.30 8.65 32.00 22.33 05Dec2017 10 a.m. 35.46 9.73 33.25 56.25 05Dec2017 11 a.m. 36.86 11.33 32.00 190.67 05Dec2017 12 p.m. 39.60 10.79 28.00 363.00 05Dec2017 1 p.m. 40.40 11.71 27.00 280.00 05Dec2017 2 p.m. 41.99 7.72 27.00 387.00 05Dec2017 3 p.m. 41.81 5.14 27.25 197.25 05Dec2017 4 p.m. -901.00 -901.00 -901.00 -901.00 05Dec2017 5 p.m. -901.00 -901.00 -901.00 -901.00 05Dec2017 6 p.m. -901.00 -901.00 -901.00 -901.00 05Dec2017 7 p.m. -901.00 -901.00 -901.00 -901.00 05Dec2017 8 p.m. 34.88 1.57 48.00 0.00 05Dec2017 9 p.m. 32.18 7.38 55.00 0.00 05Dec2017 10 p.m. 32.72 7.27 52.50 0.00 05Dec2017 11 p.m. 31.28 8.28 55.25 0.00 06Dec2017 12 a.m. 32.45 8.33 54.25 0.00 06Dec2017 1 a.m. 34.07 8.89 52.25 0.00 06Dec2017 2 a.m. 33.12 8.78 53.75 0.00 06Dec2017 3 a.m. 31.40 9.62 56.33 0.00 06Dec2017 4 a.m. 28.18 4.03 63.25 0.00 06Dec2017 5 a.m. 25.88 4.14 68.00 0.00 06Dec2017 6 a.m. 24.94 5.26 72.25 0.00 06Dec2017 7 a.m. 26.87 7.72 71.00 0.00 Accuml. Values 675.21 156.29 937.58 1501.50 Num. Valid Values 20 20 20 20 Avg. Values 33.76 7.81 46.88 75.07 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 0.98 301.76 46.88 154.92 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5312 definition: xcompl = 1 - (RELH_avg/100) TdC = -9.1740 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 = 0.4186 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.5814 definition: del_lambda2 = 1 - del_lambda1 Qn = 0.3747 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 = 3.5253 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 3.9250 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.096 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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