Detailed Weather Data for Project: FCOB

Date Time TAIR WSPD RELH SRAD 01Jan2018 8 a.m. 4.69 12.69 69.50 7.50 01Jan2018 9 a.m. 5.36 12.68 66.00 120.00 01Jan2018 10 a.m. 7.84 10.18 57.50 296.75 01Jan2018 11 a.m. 10.82 10.44 50.67 435.33 01Jan2018 12 p.m. 14.05 10.51 46.00 533.50 01Jan2018 1 p.m. 16.58 8.57 41.67 570.00 01Jan2018 2 p.m. 18.05 8.16 39.25 537.75 01Jan2018 3 p.m. 19.27 7.83 37.50 452.75 01Jan2018 4 p.m. 19.46 8.80 37.33 293.67 01Jan2018 5 p.m. 18.95 7.44 39.25 144.75 01Jan2018 6 p.m. 15.80 4.70 47.00 0.00 01Jan2018 7 p.m. 13.82 5.14 52.00 0.00 01Jan2018 8 p.m. 12.56 4.92 56.00 0.00 01Jan2018 9 p.m. 12.02 4.47 56.50 0.00 01Jan2018 10 p.m. 11.24 5.22 58.33 0.00 01Jan2018 11 p.m. 10.22 3.75 62.00 0.00 02Jan2018 12 a.m. 10.22 4.03 62.50 0.00 02Jan2018 1 a.m. 9.14 4.19 66.25 0.00 02Jan2018 2 a.m. 8.78 3.08 68.00 0.00 02Jan2018 3 a.m. 10.28 5.74 66.00 0.00 02Jan2018 4 a.m. 11.17 7.44 62.00 0.00 02Jan2018 5 a.m. 11.03 6.49 61.50 0.00 02Jan2018 6 a.m. 11.21 5.54 63.00 0.00 02Jan2018 7 a.m. 11.66 4.92 62.50 0.00 Accuml. Values 294.22 166.93 1328.25 3392.00 Num. Valid Values 24 24 24 24 Avg. Values 12.26 6.96 55.34 141.33 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -10.97 268.59 55.34 291.64 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4466 definition: xcompl = 1 - (RELH_avg/100) TdC = -18.1736 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 = 0.2441 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7559 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.3862 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 = 1.1945 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.4019 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.055 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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