Detailed Weather Data for Project: FCOB

Date Time TAIR WSPD RELH SRAD 06Mar2018 8 a.m. 32.13 6.26 56.00 89.50 06Mar2018 9 a.m. 39.62 7.16 44.00 224.00 06Mar2018 10 a.m. 48.38 10.51 28.50 534.75 06Mar2018 11 a.m. 52.94 13.35 19.00 694.67 06Mar2018 12 p.m. 56.16 17.17 15.50 813.75 06Mar2018 1 p.m. 58.22 20.58 13.00 859.67 06Mar2018 2 p.m. 59.36 20.69 11.75 838.25 06Mar2018 3 p.m. 60.89 21.19 11.00 743.25 06Mar2018 4 p.m. 60.12 20.30 11.50 587.50 06Mar2018 5 p.m. 58.77 19.52 12.75 381.25 06Mar2018 6 p.m. 55.40 21.70 14.00 71.00 06Mar2018 7 p.m. 52.34 14.32 20.00 0.00 06Mar2018 8 p.m. 49.82 13.65 22.00 0.00 06Mar2018 9 p.m. 48.47 12.30 23.00 0.00 06Mar2018 10 p.m. 45.50 13.20 29.00 0.00 06Mar2018 11 p.m. 41.54 14.76 38.50 0.00 07Mar2018 12 a.m. 39.29 7.55 46.00 0.00 07Mar2018 1 a.m. 37.44 7.94 48.50 0.00 07Mar2018 2 a.m. 33.53 6.77 55.25 0.00 07Mar2018 3 a.m. 32.42 7.16 58.67 0.00 07Mar2018 4 a.m. 28.85 5.48 67.00 0.00 07Mar2018 5 a.m. 27.50 4.81 71.50 0.00 07Mar2018 6 a.m. 26.24 4.81 73.50 0.00 07Mar2018 7 a.m. 25.16 4.03 76.50 2.50 Accuml. Values 1070.09 295.21 866.42 5840.09 Num. Valid Values 24 24 24 24 Avg. Values 44.59 12.30 36.10 243.34 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 6.99 474.99 36.10 502.13 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.6390 definition: xcompl = 1 - (RELH_avg/100) TdC = -7.1664 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 = 0.5108 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4892 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.6281 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 = 6.4707 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 9.2961 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.272 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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