Detailed Weather Data for Project: FCOB

Date Time TAIR WSPD RELH SRAD 02Jan2018 8 a.m. 12.25 3.30 61.50 1.75 02Jan2018 9 a.m. 12.98 2.61 60.00 34.00 02Jan2018 10 a.m. 14.23 3.36 57.75 95.00 02Jan2018 11 a.m. 15.26 2.61 55.33 123.33 02Jan2018 12 p.m. 16.79 4.31 54.25 174.50 02Jan2018 1 p.m. 18.08 6.56 50.67 183.00 02Jan2018 2 p.m. 18.50 4.47 47.75 183.00 02Jan2018 3 p.m. 19.18 2.80 46.00 171.75 02Jan2018 4 p.m. 20.21 4.47 43.00 161.50 02Jan2018 5 p.m. 20.53 4.03 41.25 64.50 02Jan2018 6 p.m. 17.96 2.91 44.00 0.00 02Jan2018 7 p.m. 14.36 0.89 48.00 0.00 02Jan2018 8 p.m. 11.84 4.70 56.00 0.00 02Jan2018 9 p.m. 10.94 6.04 61.00 0.00 02Jan2018 10 p.m. 10.58 7.16 64.67 0.00 02Jan2018 11 p.m. 9.82 5.87 66.00 0.00 03Jan2018 12 a.m. 9.62 8.43 70.33 0.00 03Jan2018 1 a.m. 10.18 10.63 69.25 0.00 03Jan2018 2 a.m. 10.90 12.19 67.00 0.00 03Jan2018 3 a.m. 11.48 10.14 67.00 0.00 03Jan2018 4 a.m. 12.56 9.39 66.00 0.00 03Jan2018 5 a.m. 13.19 10.51 66.50 0.00 03Jan2018 6 a.m. 14.54 12.30 63.75 0.00 03Jan2018 7 a.m. 14.27 5.82 65.50 0.00 Accuml. Values 340.25 145.50 1392.50 1192.33 Num. Valid Values 24 24 24 24 Avg. Values 14.18 6.06 58.02 49.68 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values -9.90 234.11 58.02 102.52 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.4198 definition: xcompl = 1 - (RELH_avg/100) TdC = -16.5982 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 = 0.2582 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.7418 definition: del_lambda2 = 1 - del_lambda1 Qn = -0.2283 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 = 1.2209 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 1.3099 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.036 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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